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  <xs:element id="sui_LeasesAdditionalInformationTableTextBlock" abstract="false" name="LeasesAdditionalInformationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="sui_LeaseFinancialLiabilityFutureMinimumRentalPaymentsFiscalYearMaturityTableTextBlock" abstract="false" name="LeaseFinancialLiabilityFutureMinimumRentalPaymentsFiscalYearMaturityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="sui_SignificantAccountingPoliciesTable" abstract="true" name="SignificantAccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="sui_MotorHomeCommunityRVResortAndMarinaMember" abstract="true" name="MotorHomeCommunityRVResortAndMarinaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ManufacturedHomeCommunityMember" abstract="true" name="ManufacturedHomeCommunityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RvCommunityMember" abstract="true" name="RvCommunityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MarinasMember" abstract="true" name="MarinasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_UKCommunityMember" abstract="true" name="UKCommunityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_ParkHolidaysCashDepositMember" abstract="true" name="ParkHolidaysCashDepositMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TreasuryLockAndInterestRateSwapMember" abstract="true" name="TreasuryLockAndInterestRateSwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_UKMHOperatingCommunityMember" abstract="true" name="UKMHOperatingCommunityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_VariableInterstEntityConcentrationRiskMember" abstract="true" name="VariableInterstEntityConcentrationRiskMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SignificantAccountingPoliciesLineItems" abstract="true" name="SignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="sui_ResidentBalancePastDuePeriod" abstract="false" name="ResidentBalancePastDuePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="sui_HomeSaleProceeds" abstract="false" name="HomeSaleProceeds" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_SeniorUnsecuredNotesMember" abstract="true" name="SeniorUnsecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesFairValueAdjustment" abstract="false" name="TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesFairValueAdjustment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_RentalpropertiesMember" abstract="true" name="RentalpropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FranchiseAgreementsAndOtherIntangibleAssetsMember" abstract="true" name="FranchiseAgreementsAndOtherIntangibleAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MHMember" abstract="true" name="MHMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RVMember" abstract="true" name="RVMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_UKSegmentMember" abstract="true" name="UKSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SavannahYachtCenterMember" abstract="true" name="SavannahYachtCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_PortMilfordMember" abstract="true" name="PortMilfordMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_OakLeafMember" abstract="true" name="OakLeafMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_BerthOnePalmBeachMember" abstract="true" name="BerthOnePalmBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_MarinaVillageYachtHarborMember" abstract="true" name="MarinaVillageYachtHarborMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_VentureHarborFuelMember" abstract="true" name="VentureHarborFuelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SpanishTrailsMHCMember" abstract="true" name="SpanishTrailsMHCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LittondaleMember" abstract="true" name="LittondaleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SixCommunityMHPortfolioMember" abstract="true" name="SixCommunityMHPortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_LakePointeVillageMember" abstract="true" name="LakePointeVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ReserveatFoxCreekMember" abstract="true" name="ReserveatFoxCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TurnberryMember" abstract="true" name="TurnberryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CanadianPortfolioMember" abstract="true" name="CanadianPortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_NotesDueFromRealEstateDevelopersMember" abstract="true" name="NotesDueFromRealEstateDevelopersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_NumberOfPropertiesSold" abstract="false" name="NumberOfPropertiesSold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_NumberOfHousingSitesSold" abstract="false" name="NumberOfHousingSitesSold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_CashConsiderationFromSaleOfRealEstateNetOfMortgageDebtAndOtherAdjustments" abstract="false" name="CashConsiderationFromSaleOfRealEstateNetOfMortgageDebtAndOtherAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_FinancingReceivableBeforeAllowanceForCreditLossNetOfFairValueAdjustment" abstract="false" name="FinancingReceivableBeforeAllowanceForCreditLossNetOfFairValueAdjustment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_FoxRunSavannahYachtCenterMember" abstract="true" name="FoxRunSavannahYachtCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" abstract="false" name="AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsLiabilitiesInventory" abstract="false" name="AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsLiabilitiesInventory" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsLiabilitiesGoodwillAndOtherIntangibleAssets" abstract="false" name="AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsLiabilitiesGoodwillAndOtherIntangibleAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsLiabilities" abstract="false" name="AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" abstract="false" name="AssetAcquisitionRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsLiabilitiesInventory" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsLiabilitiesInventory" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsLiabilities" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_CabrilloIsleAndEmeraldCoastMember" abstract="true" name="CabrilloIsleAndEmeraldCoastMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MHOperatingCommunityMember" abstract="true" name="MHOperatingCommunityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_UKNonOperatingPropertiesMember" abstract="true" name="UKNonOperatingPropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunNGResortsMember" abstract="true" name="SunNGResortsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_MenifeeAndMorenoMember" abstract="true" name="MenifeeAndMorenoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_BoulderRidgeMember" abstract="true" name="BoulderRidgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PortfolioOfRVPropertiesMember" abstract="true" name="PortfolioOfRVPropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SunNGResortsTransactionMember" abstract="true" name="SunNGResortsTransactionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_PetoskyMember" abstract="true" name="PetoskyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SunNGResortsTransactionAndSunNGBeaverBrookLLCMember" abstract="true" name="SunNGResortsTransactionAndSunNGBeaverBrookLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_AssetImpairmentsMember" abstract="true" name="AssetImpairmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_GainLossOnDispositionOfPropertiesMember" abstract="true" name="GainLossOnDispositionOfPropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FourteenSubsidiariesFollowingSunNGTransactionInQ42023Member" abstract="true" name="FourteenSubsidiariesFollowingSunNGTransactionInQ42023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_RezPlotMember" abstract="true" name="RezPlotMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesPurchaseOfInterestByParentNumberOfProperties" abstract="false" name="ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesPurchaseOfInterestByParentNumberOfProperties" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_NumberOfLandParcelsAcquired" abstract="false" name="NumberOfLandParcelsAcquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationConsiderationInFormOfNoteReceivable" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationConsiderationInFormOfNoteReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_NumberOfPropertiesReacquired" abstract="false" name="NumberOfPropertiesReacquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_RealEstateReacquiredGainLoss" abstract="false" name="RealEstateReacquiredGainLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_OtherLiabilitiesTransfersFromHeldForSale" abstract="false" name="OtherLiabilitiesTransfersFromHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_IntangibleAssetsTransfersFromHeldForSale" abstract="false" name="IntangibleAssetsTransfersFromHeldForSale" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_NumberOfGroundLeasesEnteredInto" abstract="false" name="NumberOfGroundLeasesEnteredInto" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_NumberOfWetSlipsAndDryStorageSpacesLeased" abstract="false" name="NumberOfWetSlipsAndDryStorageSpacesLeased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_NumberOfBuildingsAcquired" abstract="false" name="NumberOfBuildingsAcquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_NumberOfPropertiesAcquiredWithMajorityInterest" abstract="false" name="NumberOfPropertiesAcquiredWithMajorityInterest" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_NumberOfConsolidatedJointVentureProperties" abstract="false" name="NumberOfConsolidatedJointVentureProperties" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_NoncontrollingInterestIssuanceOfStockFromSubsidiaryEquityIssuanceShares" abstract="false" name="NoncontrollingInterestIssuanceOfStockFromSubsidiaryEquityIssuanceShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationCashConsideration" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationCashConsideration" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_NumberOfAdditionalPropertiesSold" abstract="false" name="NumberOfAdditionalPropertiesSold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_TotalNotesAndOtherReceivablesMember" abstract="true" name="TotalNotesAndOtherReceivablesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OtherReceivablesNetMember" abstract="true" name="OtherReceivablesNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ScheduleOfInstallmentNotesReceivableTable" abstract="true" name="ScheduleOfInstallmentNotesReceivableTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="sui_SecuredInstallmentNotesReceivableOnManufacturedHomesMember" abstract="true" name="SecuredInstallmentNotesReceivableOnManufacturedHomesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_NotesDueFromRoyaleHoldingsMember" abstract="true" name="NotesDueFromRoyaleHoldingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_NotesDueFromOtherRealEstateDevelopersMember" abstract="true" name="NotesDueFromOtherRealEstateDevelopersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_RoyaleHoldingsGroupHoldCoLimitedMember" abstract="true" name="RoyaleHoldingsGroupHoldCoLimitedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_NotesReceivableFairValueAdjustment" abstract="false" name="NotesReceivableFairValueAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_ReceivableWithImputedInterestTerm" abstract="false" name="ReceivableWithImputedInterestTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="sui_NumberOfRealEstateAssetsSecuringNote" abstract="false" name="NumberOfRealEstateAssetsSecuringNote" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_NumberOfMHManufacturersSecuringNote" abstract="false" name="NumberOfMHManufacturersSecuringNote" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_RealEstateReacquiredNoteReceivableSettlementValue" abstract="false" name="RealEstateReacquiredNoteReceivableSettlementValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_UndrawnFundsOnLoans" abstract="false" name="UndrawnFundsOnLoans" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_ProceedsFromSaleOfNotesReceivableGrossOfFees" abstract="false" name="ProceedsFromSaleOfNotesReceivableGrossOfFees" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_InsuranceReceivables" abstract="false" name="InsuranceReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_OtherReceivablesForRentWaterSewerUsage" abstract="false" name="OtherReceivablesForRentWaterSewerUsage" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_OtherReceivablesOther" abstract="false" name="OtherReceivablesOther" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AllowanceForRentWaterSewerUsageReceivables" abstract="false" name="AllowanceForRentWaterSewerUsageReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_InsuranceLossRecoveryExpense" abstract="false" name="InsuranceLossRecoveryExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_InstallmentNotesReceivableOnManufacturedHomesNetMember" abstract="true" name="InstallmentNotesReceivableOnManufacturedHomesNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CollateralizedReceivablesMember" abstract="true" name="CollateralizedReceivablesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SecuredBorrowingsMember" abstract="true" name="SecuredBorrowingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesNet" abstract="false" name="TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_TransfersAccountedForAsSecuredBorrowingsAssetsReceivableForFutureCashPayment" abstract="false" name="TransfersAccountedForAsSecuredBorrowingsAssetsReceivableForFutureCashPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="sui_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesGross" abstract="false" name="TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="sui_NumberOfSitesThatSustainedSignificantDamage" abstract="false" name="NumberOfSitesThatSustainedSignificantDamage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
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  <xs:element id="sui_ArborWoodsMember" abstract="true" name="ArborWoodsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ArianaVillageMember" abstract="true" name="ArianaVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_AugustaVillageMember" abstract="true" name="AugustaVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_AustinLoanStarMember" abstract="true" name="AustinLoanStarMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BahiaVistaEstatesMember" abstract="true" name="BahiaVistaEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BakerAcresMember" abstract="true" name="BakerAcresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BeechwoodMember" abstract="true" name="BeechwoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BearLakeDevelopmentLandMember" abstract="true" name="BearLakeDevelopmentLandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BelAirEstatesMember" abstract="true" name="BelAirEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BigTreeRVResortMember" abstract="true" name="BigTreeRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BirchHillEstatesMember" abstract="true" name="BirchHillEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BlueHeronPinesMember" abstract="true" name="BlueHeronPinesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BlueJayMHRVResortMember" abstract="true" name="BlueJayMHRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BlueStarMember" abstract="true" name="BlueStarMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BlueberryHillMember" abstract="true" name="BlueberryHillMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BluebonnetLakeMember" abstract="true" name="BluebonnetLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BranchCreekMember" abstract="true" name="BranchCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BrentwoodEstatesMember" abstract="true" name="BrentwoodEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BrentwoodVillageMember" abstract="true" name="BrentwoodVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BrentwoodWestMember" abstract="true" name="BrentwoodWestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BroadviewEstatesMember" abstract="true" name="BroadviewEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BrookRidgeMember" abstract="true" name="BrookRidgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BrooksideManorMember" abstract="true" name="BrooksideManorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BrooksideVillageKentwoodMiMember" abstract="true" name="BrooksideVillageKentwoodMiMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BuenaVistaMember" abstract="true" name="BuenaVistaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ButtonwoodBayMember" abstract="true" name="ButtonwoodBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ByronCenterMember" abstract="true" name="ByronCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CalienteSandsMember" abstract="true" name="CalienteSandsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CamelotVillaMember" abstract="true" name="CamelotVillaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CandlelightManorMember" abstract="true" name="CandlelightManorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CapeMayCrossingMember" abstract="true" name="CapeMayCrossingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CarriageCoveMember" abstract="true" name="CarriageCoveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CarringtonPointeMember" abstract="true" name="CarringtonPointeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CaveCreekMember" abstract="true" name="CaveCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CedarSpringsMember" abstract="true" name="CedarSpringsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CentralParkMHRVResortMember" abstract="true" name="CentralParkMHRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CharlevoixEstatesMember" abstract="true" name="CharlevoixEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CherrywoodMember" abstract="true" name="CherrywoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ChisholmPointMember" abstract="true" name="ChisholmPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CiderMillCrossingsMember" abstract="true" name="CiderMillCrossingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CiderMillVillageMember" abstract="true" name="CiderMillVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CiscoGroveCampgroundRVMember" abstract="true" name="CiscoGroveCampgroundRVMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CitrusHillRVResortMember" abstract="true" name="CitrusHillRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ClearWaterMobileMember" abstract="true" name="ClearWaterMobileMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ClubWildwoodMember" abstract="true" name="ClubWildwoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CoastalEstatesMember" abstract="true" name="CoastalEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CobusGreenMember" abstract="true" name="CobusGreenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ColonyInTheWoodMember" abstract="true" name="ColonyInTheWoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ComalFarmsMember" abstract="true" name="ComalFarmsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CountryAcresMember" abstract="true" name="CountryAcresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CountryHillsVillageMember" abstract="true" name="CountryHillsVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CountryLakesMember" abstract="true" name="CountryLakesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CountryMeadowsMember" abstract="true" name="CountryMeadowsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CountryMeadowsVillageMember" abstract="true" name="CountryMeadowsVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CountryVillageMember" abstract="true" name="CountryVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CountrysideEstatesMember" abstract="true" name="CountrysideEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CountrysideAtlantaMember" abstract="true" name="CountrysideAtlantaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CountrysideGwinnettMember" abstract="true" name="CountrysideGwinnettMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CountrysideLakeLanierMember" abstract="true" name="CountrysideLakeLanierMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CoyoteRanchResortMember" abstract="true" name="CoyoteRanchResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CreeksCrossingMember" abstract="true" name="CreeksCrossingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CreekwoodMeadowsMember" abstract="true" name="CreekwoodMeadowsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CrestwoodMember" abstract="true" name="CrestwoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CrossroadsMember" abstract="true" name="CrossroadsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CutlerEstatesMember" abstract="true" name="CutlerEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CypressGreensMember" abstract="true" name="CypressGreensMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_DeepRunMember" abstract="true" name="DeepRunMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_DeerwoodMember" abstract="true" name="DeerwoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_DesertHarborMember" abstract="true" name="DesertHarborMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_DuttonMillVillageMember" abstract="true" name="DuttonMillVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_EagleCrestMember" abstract="true" name="EagleCrestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_EastForkMember" abstract="true" name="EastForkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_EastVillageEstatesMember" abstract="true" name="EastVillageEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_EgelcraftMember" abstract="true" name="EgelcraftMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ElCapitanCanyonMember" abstract="true" name="ElCapitanCanyonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_EllentonGardensRVResortMember" abstract="true" name="EllentonGardensRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FairfieldVillageMember" abstract="true" name="FairfieldVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FarmwoodVillageMember" abstract="true" name="FarmwoodVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FishermansCoveMember" abstract="true" name="FishermansCoveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FlamingoLakeRVResortMember" abstract="true" name="FlamingoLakeRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FondDuLacEastKettleMoraineKOAMember" abstract="true" name="FondDuLacEastKettleMoraineKOAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ForestHillMember" abstract="true" name="ForestHillMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ForestMeadowsMember" abstract="true" name="ForestMeadowsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ForestSpringsMember" abstract="true" name="ForestSpringsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ForestViewMember" abstract="true" name="ForestViewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FortDupontMember" abstract="true" name="FortDupontMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FourSeasonsMember" abstract="true" name="FourSeasonsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FrenchtownVillaElizabethWoodsMember" abstract="true" name="FrenchtownVillaElizabethWoodsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FriendlyVillageofLaHabraMember" abstract="true" name="FriendlyVillageofLaHabraMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FriendlyVillageofModestoMember" abstract="true" name="FriendlyVillageofModestoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FriendlyVillageofSimiMember" abstract="true" name="FriendlyVillageofSimiMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FriendlyVillageofWestCovinaMember" abstract="true" name="FriendlyVillageofWestCovinaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_GlenEllisFamilyCampgroundMember" abstract="true" name="GlenEllisFamilyCampgroundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_GlenHavenRVResortMember" abstract="true" name="GlenHavenRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_GlenLaurelMember" abstract="true" name="GlenLaurelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_GoldcoasterMember" abstract="true" name="GoldcoasterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_GrandBayMember" abstract="true" name="GrandBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_GrandMember" abstract="true" name="GrandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_GroveBeachMember" abstract="true" name="GroveBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_GroveRidgeRVResortMember" abstract="true" name="GroveRidgeRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_GulfstreamHarborMember" abstract="true" name="GulfstreamHarborMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HaciendadelRioMember" abstract="true" name="HaciendadelRioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HamlinMember" abstract="true" name="HamlinMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HancockHeightsEstatesMember" abstract="true" name="HancockHeightsEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HannahVillageMember" abstract="true" name="HannahVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HawkHollowMember" abstract="true" name="HawkHollowMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_HemlocksMember" abstract="true" name="HemlocksMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HeritageMember" abstract="true" name="HeritageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HickoryHillsVillageMember" abstract="true" name="HickoryHillsVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HiddenRiverRVResortMember" abstract="true" name="HiddenRiverRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HighPointMember" abstract="true" name="HighPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HighlandGreenEstatesMember" abstract="true" name="HighlandGreenEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HillcrestMember" abstract="true" name="HillcrestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HolidayParkEstatesMember" abstract="true" name="HolidayParkEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HolidayWestVillageMember" abstract="true" name="HolidayWestVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HollyForestMember" abstract="true" name="HollyForestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HollyVillageHawaiianGardensMember" abstract="true" name="HollyVillageHawaiianGardensMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HorseshoeCoveRVResortMember" abstract="true" name="HorseshoeCoveRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HuntersCrossingMember" abstract="true" name="HuntersCrossingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HuntersGlenMember" abstract="true" name="HuntersGlenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HuntingtonRunMember" abstract="true" name="HuntingtonRunMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HydeParkMember" abstract="true" name="HydeParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_IndianCreekParkMember" abstract="true" name="IndianCreekParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_IndianWellsRVResortMember" abstract="true" name="IndianWellsRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_IslandLakeMember" abstract="true" name="IslandLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkTMAndroscogginLakeMember" abstract="true" name="JellystoneParkTMAndroscogginLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtBartonLakeMember" abstract="true" name="JellystoneParkAtBartonLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtBirchwoodAcresMHRVResortMember" abstract="true" name="JellystoneParkAtBirchwoodAcresMHRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkOfChicagoMember" abstract="true" name="JellystoneParkOfChicagoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkTMChincoteagueIslandMember" abstract="true" name="JellystoneParkTMChincoteagueIslandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtDelawareBeachesMember" abstract="true" name="JellystoneParkAtDelawareBeachesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtGardinerMember" abstract="true" name="JellystoneParkAtGardinerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtGoldenValleyMember" abstract="true" name="JellystoneParkAtGoldenValleyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtGuadalupeRiverMember" abstract="true" name="JellystoneParkAtGuadalupeRiverMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtHillCountryMember" abstract="true" name="JellystoneParkAtHillCountryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkatLarkspurMember" abstract="true" name="JellystoneParkatLarkspurMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtLurayMember" abstract="true" name="JellystoneParkAtLurayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtMammothCaveMember" abstract="true" name="JellystoneParkAtMammothCaveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtMarylandMember" abstract="true" name="JellystoneParkAtMarylandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtMemphisMember" abstract="true" name="JellystoneParkAtMemphisMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtNaturalBridgeMember" abstract="true" name="JellystoneParkAtNaturalBridgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkTMPetoskeyMember" abstract="true" name="JellystoneParkTMPetoskeyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtQuarryvilleMember" abstract="true" name="JellystoneParkAtQuarryvilleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtSouthJerseyMember" abstract="true" name="JellystoneParkAtSouthJerseyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_JellystoneParkAtTowerParkMember" abstract="true" name="JellystoneParkAtTowerParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JellystoneParkOfWesternNewYorkMember" abstract="true" name="JellystoneParkOfWesternNewYorkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_JetstreamNASAMember" abstract="true" name="JetstreamNASAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_KensingtonMeadowsMember" abstract="true" name="KensingtonMeadowsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_KimberlyEstatesMember" abstract="true" name="KimberlyEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_KingsCourtMember" abstract="true" name="KingsCourtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_KingsLakeMember" abstract="true" name="KingsLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_KingsManorMember" abstract="true" name="KingsManorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_KingsPointeMember" abstract="true" name="KingsPointeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_KissimmeeGardensMember" abstract="true" name="KissimmeeGardensMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_KissimmeeSouthRVResortMember" abstract="true" name="KissimmeeSouthRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_KittatinnyCampgroundAndRVResortMember" abstract="true" name="KittatinnyCampgroundAndRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_KnollwoodEstatesMember" abstract="true" name="KnollwoodEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LaCasaBlancaMember" abstract="true" name="LaCasaBlancaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LaCostaVillageMember" abstract="true" name="LaCostaVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LafayettePlaceMember" abstract="true" name="LafayettePlaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LakeJulianaLandingsMember" abstract="true" name="LakeJulianaLandingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LakeSanMarinoRVParkMember" abstract="true" name="LakeSanMarinoRVParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LakefrontMember" abstract="true" name="LakefrontMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LakelandMember" abstract="true" name="LakelandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_LakeshoreLandingsMember" abstract="true" name="LakeshoreLandingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LakeshoreVillasMember" abstract="true" name="LakeshoreVillasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LakesideMember" abstract="true" name="LakesideMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LakesideCrossingMember" abstract="true" name="LakesideCrossingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LakeviewMember" abstract="true" name="LakeviewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LakeviewCTMember" abstract="true" name="LakeviewCTMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LakeviewEstatesMember" abstract="true" name="LakeviewEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_LamplighterMember" abstract="true" name="LamplighterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LantanaRanchMember" abstract="true" name="LantanaRanchMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_LaurelHeightsMember" abstract="true" name="LaurelHeightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LazyJRanchMember" abstract="true" name="LazyJRanchMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LeafVerdeMember" abstract="true" name="LeafVerdeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LeisureVillageMember" abstract="true" name="LeisureVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LemonWoodMember" abstract="true" name="LemonWoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LincolnEstatesMember" abstract="true" name="LincolnEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LoneStarJellystoneParkMember" abstract="true" name="LoneStarJellystoneParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_LostDutchmanMember" abstract="true" name="LostDutchmanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MajesticOaksMember" abstract="true" name="MajesticOaksMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MapleBrookMember" abstract="true" name="MapleBrookMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MaplewoodManorMember" abstract="true" name="MaplewoodManorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MarcoNaplesMember" abstract="true" name="MarcoNaplesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MarinaCoveMember" abstract="true" name="MarinaCoveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MeadowLakeEstatesMember" abstract="true" name="MeadowLakeEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MeadowbrookMember" abstract="true" name="MeadowbrookMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MeadowbrookEstatesMember" abstract="true" name="MeadowbrookEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MeadowbrookVillageMember" abstract="true" name="MeadowbrookVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MeadowlandsMember" abstract="true" name="MeadowlandsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MeadowstoneMember" abstract="true" name="MeadowstoneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MerrymeetingMember" abstract="true" name="MerrymeetingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MillCreekMember" abstract="true" name="MillCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MillwoodMember" abstract="true" name="MillwoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MountainViewMember" abstract="true" name="MountainViewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_NapaValleyMember" abstract="true" name="NapaValleyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_NewEnglandVillageMember" abstract="true" name="NewEnglandVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_NorthLakeMember" abstract="true" name="NorthLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_NorthPointEstatesMember" abstract="true" name="NorthPointEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_NorthvilleCrossingMember" abstract="true" name="NorthvilleCrossingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_NorwayCommonsMember" abstract="true" name="NorwayCommonsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OakCreekMember" abstract="true" name="OakCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OakCrestMember" abstract="true" name="OakCrestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OakGroveMember" abstract="true" name="OakGroveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OakIslandVillageMember" abstract="true" name="OakIslandVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OakRidgeMember" abstract="true" name="OakRidgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OakviewEstatesMember" abstract="true" name="OakviewEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OakwoodVillageMember" abstract="true" name="OakwoodVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OceanBreezeResortMember" abstract="true" name="OceanBreezeResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OceanBreezeMember" abstract="true" name="OceanBreezeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_OceanPineMember" abstract="true" name="OceanPineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OceanViewMember" abstract="true" name="OceanViewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OceanWestMember" abstract="true" name="OceanWestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OrangeCityMember" abstract="true" name="OrangeCityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OrangeTreeMember" abstract="true" name="OrangeTreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OrchardLakeMember" abstract="true" name="OrchardLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PaddockParkSouthMember" abstract="true" name="PaddockParkSouthMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PalmCreekResortResidencesMember" abstract="true" name="PalmCreekResortResidencesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_PalmKeyVillageMember" abstract="true" name="PalmKeyVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PalmVillageMember" abstract="true" name="PalmVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PalosVerdesShoresMHGolfCommunityMember" abstract="true" name="PalosVerdesShoresMHGolfCommunityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ParkPlaceMember" abstract="true" name="ParkPlaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ParkRoyaleMember" abstract="true" name="ParkRoyaleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ParksideVillageMember" abstract="true" name="ParksideVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PearwoodMember" abstract="true" name="PearwoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PebbleCreekMember" abstract="true" name="PebbleCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PecanBranchMember" abstract="true" name="PecanBranchMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PecanParkMember" abstract="true" name="PecanParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PelicanBayMember" abstract="true" name="PelicanBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PembrokeDownsMember" abstract="true" name="PembrokeDownsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PheasantRidgePropertyMember" abstract="true" name="PheasantRidgePropertyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PineAcreTrailsMember" abstract="true" name="PineAcreTrailsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PineHillsMember" abstract="true" name="PineHillsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PineRidgeMember" abstract="true" name="PineRidgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PineTraceMember" abstract="true" name="PineTraceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PinebrookVillageMember" abstract="true" name="PinebrookVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PineviewEstatesMember" abstract="true" name="PineviewEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PismoDunesMember" abstract="true" name="PismoDunesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PleasantBeachCampgroundMember" abstract="true" name="PleasantBeachCampgroundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PleasantLakeRVResortMember" abstract="true" name="PleasantLakeRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PresidentialEstatesMember" abstract="true" name="PresidentialEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RainbowMember" abstract="true" name="RainbowMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_RainbowVillageMember" abstract="true" name="RainbowVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RainbowVillageofZepyrhillsMember" abstract="true" name="RainbowVillageofZepyrhillsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RanchoAlipazMember" abstract="true" name="RanchoAlipazMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RanchoCaballeroMember" abstract="true" name="RanchoCaballeroMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RanchoMirageMember" abstract="true" name="RanchoMirageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RedOaksMember" abstract="true" name="RedOaksMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RegencyHeightsMember" abstract="true" name="RegencyHeightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RichmondPlaceMember" abstract="true" name="RichmondPlaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RiverBeachCampsitesAndRVMember" abstract="true" name="RiverBeachCampsitesAndRVMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RiverHavenMember" abstract="true" name="RiverHavenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RiverPinesMember" abstract="true" name="RiverPinesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RiverRanchMember" abstract="true" name="RiverRanchMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RiverRidgeMember" abstract="true" name="RiverRidgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RiverRidgeEstatesMember" abstract="true" name="RiverRidgeEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RiversideClubMember" abstract="true" name="RiversideClubMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RiversideDriveParkMember" abstract="true" name="RiversideDriveParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RollingHillsMember" abstract="true" name="RollingHillsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RoxburyMember" abstract="true" name="RoxburyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RoyalCountryMember" abstract="true" name="RoyalCountryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RoyalPalmVillageMember" abstract="true" name="RoyalPalmVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RoyalPalmsMember" abstract="true" name="RoyalPalmsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RudgateClintonMember" abstract="true" name="RudgateClintonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RudgateManorMember" abstract="true" name="RudgateManorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SaddleOakClubMember" abstract="true" name="SaddleOakClubMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SaddlebrookMember" abstract="true" name="SaddlebrookMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SandyLakeMember" abstract="true" name="SandyLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SaralakeEstatesMember" abstract="true" name="SaralakeEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SavannaClubMember" abstract="true" name="SavannaClubMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ScioFarmsMember" abstract="true" name="ScioFarmsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SeaAirVillageMember" abstract="true" name="SeaAirVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SerendipityMember" abstract="true" name="SerendipityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SettlersRestMember" abstract="true" name="SettlersRestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ShadowWoodVillageMember" abstract="true" name="ShadowWoodVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ShadyPinesMember" abstract="true" name="ShadyPinesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ShadyRoadVillasMember" abstract="true" name="ShadyRoadVillasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SheffieldEstatesMember" abstract="true" name="SheffieldEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ShelbyForestMember" abstract="true" name="ShelbyForestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ShelbyWestMember" abstract="true" name="ShelbyWestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ShellCreekMember" abstract="true" name="ShellCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SiestaBayMember" abstract="true" name="SiestaBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SilverSpringsMember" abstract="true" name="SilverSpringsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SkyHarborMember" abstract="true" name="SkyHarborMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SkylineMember" abstract="true" name="SkylineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SmithCreekCrossingMember" abstract="true" name="SmithCreekCrossingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SouthernCharmMember" abstract="true" name="SouthernCharmMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SouthernLeisureRVResortMember" abstract="true" name="SouthernLeisureRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SouthernPalmsMember" abstract="true" name="SouthernPalmsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SouthportSpringsMember" abstract="true" name="SouthportSpringsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SouthsideLandingMember" abstract="true" name="SouthsideLandingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SouthwoodVillageMember" abstract="true" name="SouthwoodVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SpanishMainMHRVResortMember" abstract="true" name="SpanishMainMHRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_StClairPlaceMember" abstract="true" name="StClairPlaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_StonebridgeRichfieldTownshipMiMember" abstract="true" name="StonebridgeRichfieldTownshipMiMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_StonebridgeSanAntonioTxMember" abstract="true" name="StonebridgeSanAntonioTxMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_StonebrookMember" abstract="true" name="StonebrookMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_StoneridgeVillasMember" abstract="true" name="StoneridgeVillasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_StratfordLakeWinnipesaukeeSouthKOAMember" abstract="true" name="StratfordLakeWinnipesaukeeSouthKOAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SummitRidgeMember" abstract="true" name="SummitRidgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="sui_SunOutdoorsAssociationIslandMember" abstract="true" name="SunOutdoorsAssociationIslandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsBendMember" abstract="true" name="SunOutdoorsBendMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsCanyonlandsGatewayMember" abstract="true" name="SunOutdoorsCanyonlandsGatewayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsCapeCharlesMember" abstract="true" name="SunOutdoorsCapeCharlesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsCapeMayMember" abstract="true" name="SunOutdoorsCapeMayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsCentralCoastWineCountryMember" abstract="true" name="SunOutdoorsCentralCoastWineCountryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsChesapeakeBayMember" abstract="true" name="SunOutdoorsChesapeakeBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsCoosBayMember" abstract="true" name="SunOutdoorsCoosBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsChincoteagueBayMember" abstract="true" name="SunOutdoorsChincoteagueBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsFrontierTownMember" abstract="true" name="SunOutdoorsFrontierTownMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsGardenCityUtahMember" abstract="true" name="SunOutdoorsGardenCityUtahMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsGigHarborMember" abstract="true" name="SunOutdoorsGigHarborMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsIslamoradaMember" abstract="true" name="SunOutdoorsIslamoradaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsKensingtonValleyMember" abstract="true" name="SunOutdoorsKensingtonValleyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsKeyLargoMember" abstract="true" name="SunOutdoorsKeyLargoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsLakeRudolphMember" abstract="true" name="SunOutdoorsLakeRudolphMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsLakeTravisMember" abstract="true" name="SunOutdoorsLakeTravisMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsMarathonMember" abstract="true" name="SunOutdoorsMarathonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsMoabDowntownMember" abstract="true" name="SunOutdoorsMoabDowntownMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsMyrtleBeachMember" abstract="true" name="SunOutdoorsMyrtleBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SunOutdoorsMysticMember" abstract="true" name="SunOutdoorsMysticMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsNewOrleansNorthShoreMember" abstract="true" name="SunOutdoorsNewOrleansNorthShoreMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsNorthMoabMember" abstract="true" name="SunOutdoorsNorthMoabMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsOceanCityMember" abstract="true" name="SunOutdoorsOceanCityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsOceanCityGatewayMember" abstract="true" name="SunOutdoorsOceanCityGatewayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsOldOrchardBeachDowntownMember" abstract="true" name="SunOutdoorsOldOrchardBeachDowntownMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsOrangeBeachMember" abstract="true" name="SunOutdoorsOrangeBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsPanamaCityBeachMember" abstract="true" name="SunOutdoorsPanamaCityBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsPasoRoblesMember" abstract="true" name="SunOutdoorsPasoRoblesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsPetoskeyBayHarborMember" abstract="true" name="SunOutdoorsPetoskeyBayHarborMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsPigeonForgeMember" abstract="true" name="SunOutdoorsPigeonForgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsPortlandSouthMember" abstract="true" name="SunOutdoorsPortlandSouthMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsRockyMountainsMember" abstract="true" name="SunOutdoorsRockyMountainsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsRehobothBayMember" abstract="true" name="SunOutdoorsRehobothBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsSacoOldOrchardBeachMember" abstract="true" name="SunOutdoorsSacoOldOrchardBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsSaltLakeCityMember" abstract="true" name="SunOutdoorsSaltLakeCityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsSanDiegoBayMember" abstract="true" name="SunOutdoorsSanDiegoBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsSantaBarbaraMember" abstract="true" name="SunOutdoorsSantaBarbaraMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsSarasotaMember" abstract="true" name="SunOutdoorsSarasotaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsStAugustineMember" abstract="true" name="SunOutdoorsStAugustineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsSugarloafKeyMember" abstract="true" name="SunOutdoorsSugarloafKeyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunOutdoorsWellsBeachMember" abstract="true" name="SunOutdoorsWellsBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SunOutdoorsYellowstoneNorthMember" abstract="true" name="SunOutdoorsYellowstoneNorthMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsAdirondackGatewayMember" abstract="true" name="SunRetreatsAdirondackGatewayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsAmherstburgMember" abstract="true" name="SunRetreatsAmherstburgMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsAvalonMember" abstract="true" name="SunRetreatsAvalonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsBirchBayMember" abstract="true" name="SunRetreatsBirchBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsCapeCodMember" abstract="true" name="SunRetreatsCapeCodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsCapeMayWildwoodMember" abstract="true" name="SunRetreatsCapeMayWildwoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsCrystalRiverMember" abstract="true" name="SunRetreatsCrystalRiverMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SunRetreatsDaytonaBeachMember" abstract="true" name="SunRetreatsDaytonaBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsDennisPortMember" abstract="true" name="SunRetreatsDennisPortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsDunedinMember" abstract="true" name="SunRetreatsDunedinMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsEsteroBayMember" abstract="true" name="SunRetreatsEsteroBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SunRetreatsFortMyersBeachMember" abstract="true" name="SunRetreatsFortMyersBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SunRetreatsGenevaOnTheLakeMember" abstract="true" name="SunRetreatsGenevaOnTheLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsGwynnsIslandMember" abstract="true" name="SunRetreatsGwynnsIslandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsGunLakeMember" abstract="true" name="SunRetreatsGunLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsHomosassaRiverMember" abstract="true" name="SunRetreatsHomosassaRiverMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SunRetreatsLakeJosephineRVResortMember" abstract="true" name="SunRetreatsLakeJosephineRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsLancasterCountyMember" abstract="true" name="SunRetreatsLancasterCountyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsLongBeachIslandMember" abstract="true" name="SunRetreatsLongBeachIslandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsNantahalaMember" abstract="true" name="SunRetreatsNantahalaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatNaplesMember" abstract="true" name="SunRetreatNaplesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsNaplesEastMember" abstract="true" name="SunRetreatsNaplesEastMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsNewPointMember" abstract="true" name="SunRetreatsNewPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsOcalaOrangeLakeMember" abstract="true" name="SunRetreatsOcalaOrangeLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SunRetreatsOldOrchardBeachMember" abstract="true" name="SunRetreatsOldOrchardBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsOrlandoChampionsGateMember" abstract="true" name="SunRetreatsOrlandoChampionsGateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsPetersPondMember" abstract="true" name="SunRetreatsPetersPondMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsAtPleasantAcresFarmMember" abstract="true" name="SunRetreatsAtPleasantAcresFarmMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsRehobothBayMember" abstract="true" name="SunRetreatsRehobothBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsRockRiverMember" abstract="true" name="SunRetreatsRockRiverMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsSanAntonioWestMember" abstract="true" name="SunRetreatsSanAntonioWestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsSeaIsleMember" abstract="true" name="SunRetreatsSeaIsleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsSeashoreMember" abstract="true" name="SunRetreatsSeashoreMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsShenandoahValleyMember" abstract="true" name="SunRetreatsShenandoahValleyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsSherkstonShoresMember" abstract="true" name="SunRetreatsSherkstonShoresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsSilverLakeMember" abstract="true" name="SunRetreatsSilverLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsTexasHillCountryMember" abstract="true" name="SunRetreatsTexasHillCountryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunRetreatsAtWildAcresMember" abstract="true" name="SunRetreatsAtWildAcresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunValleyMember" abstract="true" name="SunValleyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunVillaEstatesMember" abstract="true" name="SunVillaEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SuncoastGatewayMember" abstract="true" name="SuncoastGatewayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunlakeEstatesMember" abstract="true" name="SunlakeEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunriseEstatesMember" abstract="true" name="SunriseEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunsetBeachRVResortMember" abstract="true" name="SunsetBeachRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunsetHarboratCowKeyMarinaMember" abstract="true" name="SunsetHarboratCowKeyMarinaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunsetRidgeMember" abstract="true" name="SunsetRidgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SunsetRidgeTXMember" abstract="true" name="SunsetRidgeTXMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SwanMeadowMember" abstract="true" name="SwanMeadowMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SweetwaterMember" abstract="true" name="SweetwaterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SycamoreVillageMember" abstract="true" name="SycamoreVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SylvanCrossingMember" abstract="true" name="SylvanCrossingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SylvanGlenEstatesMember" abstract="true" name="SylvanGlenEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TallowwoodIsleMember" abstract="true" name="TallowwoodIsleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TamaracVillageMember" abstract="true" name="TamaracVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TampaEastMember" abstract="true" name="TampaEastMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TanglewoodVillageMember" abstract="true" name="TanglewoodVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TheColonyMember" abstract="true" name="TheColonyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TheFoothillsMember" abstract="true" name="TheFoothillsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TheGroveatAltaRidgeMember" abstract="true" name="TheGroveatAltaRidgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TheHamptonsGolfCountryClubMember" abstract="true" name="TheHamptonsGolfCountryClubMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TheHideawayMember" abstract="true" name="TheHideawayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TheHillsMember" abstract="true" name="TheHillsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TheLandingsAtLakeHenryMember" abstract="true" name="TheLandingsAtLakeHenryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TheRidgeMember" abstract="true" name="TheRidgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TheValleyMember" abstract="true" name="TheValleyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TheVillasatCallaPointeMember" abstract="true" name="TheVillasatCallaPointeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TheWillowsMember" abstract="true" name="TheWillowsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ThemeworldMember" abstract="true" name="ThemeworldMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ThreeGardensMember" abstract="true" name="ThreeGardensMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ThreeLakesMember" abstract="true" name="ThreeLakesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TimberRidgeMember" abstract="true" name="TimberRidgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TimberlineEstatesMember" abstract="true" name="TimberlineEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TownCountryMember" abstract="true" name="TownCountryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TownCountryVillageMember" abstract="true" name="TownCountryVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TranquilityMHCMember" abstract="true" name="TranquilityMHCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TravelersWorldMember" abstract="true" name="TravelersWorldMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TreetopsMember" abstract="true" name="TreetopsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TroyVillaMember" abstract="true" name="TroyVillaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_VallecitoMember" abstract="true" name="VallecitoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_VictorVillaMember" abstract="true" name="VictorVillaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_VinesMember" abstract="true" name="VinesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_VistadelLagoMember" abstract="true" name="VistadelLagoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_VistadelLagoMHRVResortMember" abstract="true" name="VistadelLagoMHRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_VizcayaLakesMember" abstract="true" name="VizcayaLakesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WaldenWoodsIMember" abstract="true" name="WaldenWoodsIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WaldenWoodsIIMember" abstract="true" name="WaldenWoodsIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WarrenDunesVillageMember" abstract="true" name="WarrenDunesVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WaterOakCountryClubEstatesMember" abstract="true" name="WaterOakCountryClubEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WatersEdgeMember" abstract="true" name="WatersEdgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WaverlyShoresVillageMember" abstract="true" name="WaverlyShoresVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WestVillageEstateMember" abstract="true" name="WestVillageEstateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WestbrookSeniorVillageMember" abstract="true" name="WestbrookSeniorVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WestbrookVillageMember" abstract="true" name="WestbrookVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WestsideRidgeMember" abstract="true" name="WestsideRidgeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WestwardShoresCottagesRVResortMember" abstract="true" name="WestwardShoresCottagesRVResortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WhiteLakeMember" abstract="true" name="WhiteLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WillowCrossingMember" abstract="true" name="WillowCrossingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_WillowbrookMember" abstract="true" name="WillowbrookMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WindhamHillsMember" abstract="true" name="WindhamHillsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WindmillVillageMember" abstract="true" name="WindmillVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WindsorWoodsVillageMember" abstract="true" name="WindsorWoodsVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WoodhavenPlaceMember" abstract="true" name="WoodhavenPlaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WoodlakeTrailsMember" abstract="true" name="WoodlakeTrailsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WoodlandParkEstatesMember" abstract="true" name="WoodlandParkEstatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WoodlandsatChurchLakeMember" abstract="true" name="WoodlandsatChurchLakeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WoodsideTerraceMember" abstract="true" name="WoodsideTerraceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WymberlyMember" abstract="true" name="WymberlyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_YankeeVillageMember" abstract="true" name="YankeeVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CorporateHeadquartersMember" abstract="true" name="CorporateHeadquartersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_AllUKPropertiesIncludingUKHeadquartersAndOthersMember" abstract="true" name="AllUKPropertiesIncludingUKHeadquartersAndOthersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_AllUKPropertiesExcludingCorporateHeadquartersMember" abstract="true" name="AllUKPropertiesExcludingCorporateHeadquartersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_AlbertaMember" abstract="true" name="AlbertaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_AmbleLinksMember" abstract="true" name="AmbleLinksMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_AshbourneHeightsMember" abstract="true" name="AshbourneHeightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BeauportMember" abstract="true" name="BeauportMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BirchingtonValeMember" abstract="true" name="BirchingtonValeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BodminHolidayParkMember" abstract="true" name="BodminHolidayParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BowlandFellMember" abstract="true" name="BowlandFellMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BroadlandSandsMember" abstract="true" name="BroadlandSandsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BryntegMember" abstract="true" name="BryntegMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_BurgheadLossiemouthSilverSandsMember" abstract="true" name="BurgheadLossiemouthSilverSandsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CarltonMeresMember" abstract="true" name="CarltonMeresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ChantryMember" abstract="true" name="ChantryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ChichesterLakesideMember" abstract="true" name="ChichesterLakesideMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_CoghurstHallMember" abstract="true" name="CoghurstHallMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_DawlishSandsMember" abstract="true" name="DawlishSandsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_DovercourtMember" abstract="true" name="DovercourtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_FelixstoweBeachMember" abstract="true" name="FelixstoweBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_GlendaleMember" abstract="true" name="GlendaleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_GoldenSandsMember" abstract="true" name="GoldenSandsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HartsMember" abstract="true" name="HartsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HedleyWoodMember" abstract="true" name="HedleyWoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HenfoldMember" abstract="true" name="HenfoldMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_HengarManorMember" abstract="true" name="HengarManorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MalvernViewMember" abstract="true" name="MalvernViewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MarlieMember" abstract="true" name="MarlieMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_NewBeachMember" abstract="true" name="NewBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_NewhavenMember" abstract="true" name="NewhavenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OaklandsMember" abstract="true" name="OaklandsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_OldKerrowMember" abstract="true" name="OldKerrowMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_OysterBayMember" abstract="true" name="OysterBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PakefieldMember" abstract="true" name="PakefieldMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ParSandsMember" abstract="true" name="ParSandsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PentireMember" abstract="true" name="PentireMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PevenseyBayMember" abstract="true" name="PevenseyBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PlasCochMember" abstract="true" name="PlasCochMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_PolperroMember" abstract="true" name="PolperroMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RibbleValleyMember" abstract="true" name="RibbleValleyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RyeHarbourMember" abstract="true" name="RyeHarbourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SandLeMereMember" abstract="true" name="SandLeMereMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SandhillsMember" abstract="true" name="SandhillsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SandyBayMember" abstract="true" name="SandyBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SeaviewMember" abstract="true" name="SeaviewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SeawickMember" abstract="true" name="SeawickMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SolentBreezesMember" abstract="true" name="SolentBreezesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_StOsythBeachMember" abstract="true" name="StOsythBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SteepleBayMember" abstract="true" name="SteepleBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_StowfordMember" abstract="true" name="StowfordMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SuffolkSandsMember" abstract="true" name="SuffolkSandsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TarkaMember" abstract="true" name="TarkaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TrevellaMember" abstract="true" name="TrevellaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WatersideMember" abstract="true" name="WatersideMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WestMerseaMember" abstract="true" name="WestMerseaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WinchelseaSandsMember" abstract="true" name="WinchelseaSandsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_WoodFarmMember" abstract="true" name="WoodFarmMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_YorkshireDalesMember" abstract="true" name="YorkshireDalesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_UnitedKingdomHeadquartersMember" abstract="true" name="UnitedKingdomHeadquartersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_AllMarinaPropertiesIncludingMarinasHeadquartersAndOtherMember" abstract="true" name="AllMarinaPropertiesIncludingMarinasHeadquartersAndOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_AllMarinaPropertiesExcludingMarinasHeadquartersAndOtherMember" abstract="true" name="AllMarinaPropertiesExcludingMarinasHeadquartersAndOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="sui_SafeHarborAnacapaIsleMember" abstract="true" name="SafeHarborAnacapaIsleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborAnglerHouseMember" abstract="true" name="SafeHarborAnglerHouseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborAnnapolisMember" abstract="true" name="SafeHarborAnnapolisMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborAquaYachtMember" abstract="true" name="SafeHarborAquaYachtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborAqualandMember" abstract="true" name="SafeHarborAqualandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBahiaBleuMember" abstract="true" name="SafeHarborBahiaBleuMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBallenaIsleMember" abstract="true" name="SafeHarborBallenaIsleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBayfrontMember" abstract="true" name="SafeHarborBayfrontMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBeaufortMember" abstract="true" name="SafeHarborBeaufortMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBeaverCreekMember" abstract="true" name="SafeHarborBeaverCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBelleMaerMember" abstract="true" name="SafeHarborBelleMaerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeharborBluewaterMember" abstract="true" name="SafeharborBluewaterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBohemiaVistaMember" abstract="true" name="SafeHarborBohemiaVistaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBradyMountainMember" abstract="true" name="SafeHarborBradyMountainMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBristolMember" abstract="true" name="SafeHarborBristolMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBruceJohnsonsMember" abstract="true" name="SafeHarborBruceJohnsonsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBurnsideMember" abstract="true" name="SafeHarborBurnsideMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborBurntStoreMember" abstract="true" name="SafeHarborBurntStoreMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborCabrilloIsleMember" abstract="true" name="SafeHarborCabrilloIsleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborCalusaIslandMember" abstract="true" name="SafeHarborCalusaIslandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborCapeHarbourMember" abstract="true" name="SafeHarborCapeHarbourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborCapriMember" abstract="true" name="SafeHarborCapriMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborCarrollIslandMember" abstract="true" name="SafeHarborCarrollIslandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborCharlestonCityMember" abstract="true" name="SafeHarborCharlestonCityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborCityBoatyardMember" abstract="true" name="SafeHarborCityBoatyardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborCoveHavenMember" abstract="true" name="SafeHarborCoveHavenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborCowesettMember" abstract="true" name="SafeHarborCowesettMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborCrystalPointMember" abstract="true" name="SafeHarborCrystalPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="sui_SafeHarborDauntlessShipyardMember" abstract="true" name="SafeHarborDauntlessShipyardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborDeepRiverMember" abstract="true" name="SafeHarborDeepRiverMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborDetroitRiverMember" abstract="true" name="SafeHarborDetroitRiverMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborEagleCoveMember" abstract="true" name="SafeHarborEagleCoveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborEdgartownMember" abstract="true" name="SafeHarborEdgartownMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborEmeraldCoastMember" abstract="true" name="SafeHarborEmeraldCoastMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborEmeraldPointMember" abstract="true" name="SafeHarborEmeraldPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborEmeryvilleMember" abstract="true" name="SafeHarborEmeryvilleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborEssexIslandMember" abstract="true" name="SafeHarborEssexIslandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborFerryPointMember" abstract="true" name="SafeHarborFerryPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborFiddlersCoveMember" abstract="true" name="SafeHarborFiddlersCoveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborGainesMember" abstract="true" name="SafeHarborGainesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborGlenCoveMember" abstract="true" name="SafeHarborGlenCoveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborGrandIsleMember" abstract="true" name="SafeHarborGrandIsleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborGreatIslandMember" abstract="true" name="SafeHarborGreatIslandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborGreatLakesMember" abstract="true" name="SafeHarborGreatLakesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborGreatOakLandingMember" abstract="true" name="SafeHarborGreatOakLandingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborGreenHarborMember" abstract="true" name="SafeHarborGreenHarborMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborGreenportMember" abstract="true" name="SafeHarborGreenportMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborGreenwichBayMember" abstract="true" name="SafeHarborGreenwichBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborGriderHillMember" abstract="true" name="SafeHarborGriderHillMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborHacksPointMember" abstract="true" name="SafeHarborHacksPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborHarborHouseMember" abstract="true" name="SafeHarborHarborHouseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborHarborageYachtClubMember" abstract="true" name="SafeHarborHarborageYachtClubMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborHarborsViewMember" abstract="true" name="SafeHarborHarborsViewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborHarbortownMember" abstract="true" name="SafeHarborHarbortownMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborHaverstrawMember" abstract="true" name="SafeHarborHaverstrawMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborHawthorneCoveMember" abstract="true" name="SafeHarborHawthorneCoveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborHideawayBayMember" abstract="true" name="SafeHarborHideawayBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborHollyCreekMember" abstract="true" name="SafeHarborHollyCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborIslamoradaMember" abstract="true" name="SafeHarborIslamoradaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborIslandParkMember" abstract="true" name="SafeHarborIslandParkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborJamestownMember" abstract="true" name="SafeHarborJamestownMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborJamestownBoatyardMember" abstract="true" name="SafeHarborJamestownBoatyardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborJeffersonBeachMember" abstract="true" name="SafeHarborJeffersonBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborKingsPointMember" abstract="true" name="SafeHarborKingsPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborKitteryPointMember" abstract="true" name="SafeHarborKitteryPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborLakefrontMember" abstract="true" name="SafeHarborLakefrontMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborLauderdaleMarineCenterMember" abstract="true" name="SafeHarborLauderdaleMarineCenterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborLochLomondMember" abstract="true" name="SafeHarborLochLomondMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborManasquanRiverMember" abstract="true" name="SafeHarborManasquanRiverMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborMarathonMember" abstract="true" name="SafeHarborMarathonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborMarinaBayMember" abstract="true" name="SafeHarborMarinaBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MarinaBayYachtHarborMember" abstract="true" name="MarinaBayYachtHarborMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MontaukYachtClubMember" abstract="true" name="MontaukYachtClubMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborMysticMember" abstract="true" name="SafeHarborMysticMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborNarrowsPointMember" abstract="true" name="SafeHarborNarrowsPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborNewEnglandBoatworksMember" abstract="true" name="SafeHarborNewEnglandBoatworksMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborNewPortCoveMember" abstract="true" name="SafeHarborNewPortCoveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborNewportShipyardMember" abstract="true" name="SafeHarborNewportShipyardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborNorthPalmBeachMember" abstract="true" name="SafeHarborNorthPalmBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborOakLeafMember" abstract="true" name="SafeHarborOakLeafMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SafeHarborOldPortCoveMember" abstract="true" name="SafeHarborOldPortCoveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborOnsetBayMember" abstract="true" name="SafeHarborOnsetBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborOuterBanksMember" abstract="true" name="SafeHarborOuterBanksMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborOxfordMember" abstract="true" name="SafeHarborOxfordMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPeninsulaYachtClubMember" abstract="true" name="SafeHarborPeninsulaYachtClubMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPier121Member" abstract="true" name="SafeHarborPier121Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPier77Member" abstract="true" name="SafeHarborPier77Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPilotsPointMember" abstract="true" name="SafeHarborPilotsPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPinelandMember" abstract="true" name="SafeHarborPinelandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPlymouthMember" abstract="true" name="SafeHarborPlymouthMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPodickoryPointMember" abstract="true" name="SafeHarborPodickoryPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPortPhoenixMember" abstract="true" name="SafeHarborPortPhoenixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPortMilfordMember" abstract="true" name="SafeHarborPortMilfordMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SafeHarborPortRoyalMember" abstract="true" name="SafeHarborPortRoyalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPortRoyalLandingMember" abstract="true" name="SafeHarborPortRoyalLandingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPostRoadMember" abstract="true" name="SafeHarborPostRoadMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborPuertoDelReyMember" abstract="true" name="SafeHarborPuertoDelReyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborRegattaPointeMember" abstract="true" name="SafeHarborRegattaPointeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborReserveHarborMember" abstract="true" name="SafeHarborReserveHarborMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborRivieraBeachMember" abstract="true" name="SafeHarborRivieraBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborRocklandMember" abstract="true" name="SafeHarborRocklandMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborSakonnetMember" abstract="true" name="SafeHarborSakonnetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborSanJuanMember" abstract="true" name="SafeHarborSanJuanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SafeHarborSanduskyMember" abstract="true" name="SafeHarborSanduskyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborShelburneShipyardMember" abstract="true" name="SafeHarborShelburneShipyardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborShelterIslandBoatyardMember" abstract="true" name="SafeHarborShelterIslandBoatyardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborSiestaKeyMember" abstract="true" name="SafeHarborSiestaKeyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborSilverSpringMember" abstract="true" name="SafeHarborSilverSpringMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborSkippersLandingMember" abstract="true" name="SafeHarborSkippersLandingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborSkullCreekMember" abstract="true" name="SafeHarborSkullCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborSouthBayMember" abstract="true" name="SafeHarborSouthBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborSouthForkMember" abstract="true" name="SafeHarborSouthForkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborSouthHarbourVillageMember" abstract="true" name="SafeHarborSouthHarbourVillageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarbourSportsmanMember" abstract="true" name="SafeHarbourSportsmanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarbourStingrayPointMember" abstract="true" name="SafeHarbourStingrayPointMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborStirlingMember" abstract="true" name="SafeHarborStirlingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborStratfordMember" abstract="true" name="SafeHarborStratfordMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborSunroadMarinaMember" abstract="true" name="SafeHarborSunroadMarinaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborSunsetBayMember" abstract="true" name="SafeHarborSunsetBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborToledoBeachMember" abstract="true" name="SafeHarborToledoBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborTowerMarineMember" abstract="true" name="SafeHarborTowerMarineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborTradeWindsMember" abstract="true" name="SafeHarborTradeWindsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborVenturaIsleMember" abstract="true" name="SafeHarborVenturaIsleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborVineyardHavenMember" abstract="true" name="SafeHarborVineyardHavenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborWaldenMember" abstract="true" name="SafeHarborWaldenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborWentworthByTheSeaMember" abstract="true" name="SafeHarborWentworthByTheSeaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborWestPalmBeachMember" abstract="true" name="SafeHarborWestPalmBeachMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborWestportMember" abstract="true" name="SafeHarborWestportMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborWickfordMember" abstract="true" name="SafeHarborWickfordMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborWickfordCoveMember" abstract="true" name="SafeHarborWickfordCoveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborWillsboroBayMember" abstract="true" name="SafeHarborWillsboroBayMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborWisdomDockMember" abstract="true" name="SafeHarborWisdomDockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborYachtHavenMember" abstract="true" name="SafeHarborYachtHavenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SafeHarborZahnisersMember" abstract="true" name="SafeHarborZahnisersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_MarinasHeadquartersAndOtherMember" abstract="true" name="MarinasHeadquartersAndOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_RealEstateOtherAcquisitionsAndImprovements" abstract="false" name="RealEstateOtherAcquisitionsAndImprovements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_RealEstateDispositionsAndOther" abstract="false" name="RealEstateDispositionsAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_RealEstateAccumulatedDepreciationDispositionsAndOther" abstract="false" name="RealEstateAccumulatedDepreciationDispositionsAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
