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  <xs:element id="sui_MortgageTermLoans" abstract="false" name="MortgageTermLoans" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_TemporaryEquity" abstract="false" name="TemporaryEquity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_InstallmentNotesOnManufacturedHomesNotesReceivableFromRealEstateDevelopersMember" abstract="true" name="InstallmentNotesOnManufacturedHomesNotesReceivableFromRealEstateDevelopersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_RevenueFromHomeSales" abstract="false" name="RevenueFromHomeSales" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AncillaryRevenue" abstract="false" name="AncillaryRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_Brokeragecommissionsandotherincomenet" abstract="false" name="Brokeragecommissionsandotherincomenet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_CostOfHomesSold" abstract="false" name="CostOfHomesSold" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_LossFromCatastrophesNetOfRecoveries" abstract="false" name="LossFromCatastrophesNetOfRecoveries" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_IncomeLossFromContinuingOperationsBeforeOtherItemsAndTaxes" abstract="false" name="IncomeLossFromContinuingOperationsBeforeOtherItemsAndTaxes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_GainLossOnRemeasurementOfNotesReceivable" abstract="false" name="GainLossOnRemeasurementOfNotesReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_GainLossOnRemeasurementOfInvestment" abstract="false" name="GainLossOnRemeasurementOfInvestment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_WeightedAverageCommonSharesOutstandingAbstract" abstract="true" name="WeightedAverageCommonSharesOutstandingAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="sui_TotalEquityMember" abstract="true" name="TotalEquityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TotalPermanentEquityMember" abstract="true" name="TotalPermanentEquityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SeriesKPreferredOpUnitsMember" abstract="true" name="SeriesKPreferredOpUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TemporaryEquityStockIssuedDuringPeriodValueConversionOfConvertibleSecurities" abstract="false" name="TemporaryEquityStockIssuedDuringPeriodValueConversionOfConvertibleSecurities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_TemporaryEquityIssuanceOfThirdPartyEquityInterestInConsolidatedEntities" abstract="false" name="TemporaryEquityIssuanceOfThirdPartyEquityInterestInConsolidatedEntities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_TemporaryEquityDistributions" abstract="false" name="TemporaryEquityDistributions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_IssuanceOfThirdPartyEquityInterestsInConsolidatedEntities" abstract="false" name="IssuanceOfThirdPartyEquityInterestsInConsolidatedEntities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_VariableInterestEntityEquityInterestsIssued" abstract="false" name="VariableInterestEntityEquityInterestsIssued" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AccumulatedDistributionsInExcessOfNetIncomeAdjustmentForAccretionOfTemporaryEquity" abstract="false" name="AccumulatedDistributionsInExcessOfNetIncomeAdjustmentForAccretionOfTemporaryEquity" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_SaleOfSubsidiary" abstract="false" name="SaleOfSubsidiary" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_TemporaryEquitySaleOfSubsidiary" abstract="false" name="TemporaryEquitySaleOfSubsidiary" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_PaymentsForCapitalImprovementsAndDevelopmentsOfRealEstate" abstract="false" name="PaymentsForCapitalImprovementsAndDevelopmentsOfRealEstate" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_Issuanceofnotesandotherreceivables" abstract="false" name="Issuanceofnotesandotherreceivables" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_RepaymentofNotesandOtherReceivables" abstract="false" name="RepaymentofNotesandOtherReceivables" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DistributionsOfCapitalFromNonconsolidatedEntities" abstract="false" name="DistributionsOfCapitalFromNonconsolidatedEntities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_ChangeInDistributionsDeclaredAndOutstanding" abstract="false" name="ChangeInDistributionsDeclaredAndOutstanding" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedNoteReceivable" abstract="false" name="NoncashOrPartNoncashDivestitureAmountOfConsiderationReceivedNoteReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_NoncashInvestingAndFinancingItemsAcquisitionAbstract" abstract="true" name="NoncashInvestingAndFinancingItemsAcquisitionAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="sui_StockIssuedDuringPeriodValueNewIssuesCommonStockAndPreferredOPUnits" abstract="false" name="StockIssuedDuringPeriodValueNewIssuesCommonStockAndPreferredOPUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisclosureOfVariableInterestEntitiesAbstract" abstract="true" name="DisclosureOfVariableInterestEntitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="sui_ScheduleOfNotesAndOtherReceivablesTableTextBlock" abstract="false" name="ScheduleOfNotesAndOtherReceivablesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="sui_ScheduleOfOtherReceivablesTableTextBlock" abstract="false" name="ScheduleOfOtherReceivablesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="sui_ScheduleofIntangibleAssetsAmortizationExpenseTableTextBlock" abstract="false" name="ScheduleofIntangibleAssetsAmortizationExpenseTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="sui_ScheduleOfVariableInterestEntitiesOwnershipPercentagesTableTextBlock" abstract="false" name="ScheduleOfVariableInterestEntitiesOwnershipPercentagesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="sui_InterestCapitalizedTableTextBlock" abstract="false" name="InterestCapitalizedTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="sui_ScheduleOfRedeemableEquityTableTextBlock" abstract="false" name="ScheduleOfRedeemableEquityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="sui_NoncontrollingInterestsTableTextBlock" abstract="false" name="NoncontrollingInterestsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="sui_DerivativeInstrumentActivityTableTextBlock" abstract="false" name="DerivativeInstrumentActivityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="sui_LeaseBalanceSheetInformationTableTextBlock" abstract="false" name="LeaseBalanceSheetInformationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="sui_LeaseCashFlowInformationTableTextBlock" abstract="false" name="LeaseCashFlowInformationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="sui_MHMember" abstract="true" name="MHMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_RVMember" abstract="true" name="RVMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_MarinasMember" abstract="true" name="MarinasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_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_CommonOpUnitsMember" abstract="true" name="CommonOpUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1: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_AssetAcquisitionPaymentsToAcquireBusinessesGross" abstract="false" name="AssetAcquisitionPaymentsToAcquireBusinessesGross" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" 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_AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" abstract="false" name="AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory" abstract="false" name="AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsLiabilitiesInventory" abstract="false" name="AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsLiabilitiesInventory" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsLiabilities" abstract="false" name="AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" abstract="false" name="AssetAcquisitionAndBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AssetAcquisitionAndBusinessCombinationConsiderationTransferredOther" abstract="false" name="AssetAcquisitionAndBusinessCombinationConsiderationTransferredOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AssetAcquisitionAndBusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" abstract="false" name="AssetAcquisitionAndBusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_AssetAcquisitionAndBusinessCombinationConsiderationTransferred" abstract="false" name="AssetAcquisitionAndBusinessCombinationConsiderationTransferred" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_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_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_NotesduefromRealEstateDevelopersMember" abstract="true" name="NotesduefromRealEstateDevelopersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_NumberOfLandParcelsAcquired" abstract="false" name="NumberOfLandParcelsAcquired" 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_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_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_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-types: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-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_ReserveAtFoxCreekMember" abstract="true" name="ReserveAtFoxCreekMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_InstallmentNotesReceivableOnManufacturedHomesNetMember" abstract="true" name="InstallmentNotesReceivableOnManufacturedHomesNetMember" 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_TotalNotesAndOtherReceivablesMember" abstract="true" name="TotalNotesAndOtherReceivablesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_FinancingReceivableBeforeAllowanceForCreditLossNetOfFairValueAdjustment" abstract="false" name="FinancingReceivableBeforeAllowanceForCreditLossNetOfFairValueAdjustment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="sui_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDeferred" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDeferred" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
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  <xs:element id="sui_NotesReceivableFromRealEstateDevelopersMember" abstract="true" name="NotesReceivableFromRealEstateDevelopersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="sui_PurchasesAndInssurancesMember" abstract="true" name="PurchasesAndInssurancesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_SalesAndSettlementsMember" abstract="true" name="SalesAndSettlementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="sui_OtherAdjustmentsMember" abstract="true" name="OtherAdjustmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_ContingentConsiderationLiabilityMember" abstract="true" name="ContingentConsiderationLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="sui_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesMember" abstract="true" name="TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOtherAdjustments" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOtherAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="sui_DebrisRemovalAndCleanUpMember" abstract="true" name="DebrisRemovalAndCleanUpMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_InReManufacturedHomeLotRentsAntitrustLitigationNo.123Cv06715MemberMember" abstract="true" name="InReManufacturedHomeLotRentsAntitrustLitigationNo.123Cv06715MemberMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="sui_UnusualOrInfrequentItemNumberOfPropertiesAffectedByHurricane" abstract="false" name="UnusualOrInfrequentItemNumberOfPropertiesAffectedByHurricane" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_NumberOfSitesThatSustainedSignificantDamage" abstract="false" name="NumberOfSitesThatSustainedSignificantDamage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_ChangeInEstimatedInsuranceRecoveries" abstract="false" name="ChangeInEstimatedInsuranceRecoveries" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_UnusualOrInfrequentItemNumberOfPropertiesAffectedByNaturalDisasters" abstract="false" name="UnusualOrInfrequentItemNumberOfPropertiesAffectedByNaturalDisasters" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
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  <xs:element id="sui_OperatingAndFinanceLeasesLiabilityPaymentsRemainderofFiscalYear" abstract="false" name="OperatingAndFinanceLeasesLiabilityPaymentsRemainderofFiscalYear" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="sui_OperatingAndFinanceLeasesLiabilityPaymentsDueYearFour" abstract="false" name="OperatingAndFinanceLeasesLiabilityPaymentsDueYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="sui_OperatingAndFinanceLeasesLiabilityPaymentsDueafterYearFive" abstract="false" name="OperatingAndFinanceLeasesLiabilityPaymentsDueafterYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="sui_OperatingAndFinanceLeasesLiabilityUndiscountedExcessAmount" abstract="false" name="OperatingAndFinanceLeasesLiabilityUndiscountedExcessAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="sui_NumberOfPropertiesSubjectToFinancialLiability" abstract="false" name="NumberOfPropertiesSubjectToFinancialLiability" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_OptionToRepurchaseFailedSaleLeasebackTransactionAmount" abstract="false" name="OptionToRepurchaseFailedSaleLeasebackTransactionAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="sui_FinancialLiabilityToBePaidYearThree" abstract="false" name="FinancialLiabilityToBePaidYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_FinancialLiabilityToBePaidYearFour" abstract="false" name="FinancialLiabilityToBePaidYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_FinancialLiabilityToBePaidYearFive" abstract="false" name="FinancialLiabilityToBePaidYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_FinancialLiabilityToBePaidAfterYearFive" abstract="false" name="FinancialLiabilityToBePaidAfterYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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</xs:schema>
