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  <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_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_ScheduleOfNotesAndOtherReceivablesTableTextBlock" abstract="false" name="ScheduleOfNotesAndOtherReceivablesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="sui_ScheduleOfOtherReceivablesTableTextBlock" abstract="false" name="ScheduleOfOtherReceivablesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="sui_ScheduleofIntangibleAssetsAmortizationExpenseTableTextBlock" abstract="false" name="ScheduleofIntangibleAssetsAmortizationExpenseTableTextBlock" 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_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_SafeHarborBusinessMember" abstract="true" name="SafeHarborBusinessMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationsDepreciation" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationsDepreciation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationsAmortization" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationsAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationAssetImpairments" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationAssetImpairments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_DisposalGroupIncludingDiscontinuedOperationNumberOfDelayedConsentSubsidiaries" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationNumberOfDelayedConsentSubsidiaries" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationAggregateValueOfDelayedConsentSubsidiaries" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationAggregateValueOfDelayedConsentSubsidiaries" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationManagementFeePercentage" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationManagementFeePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationLand" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationLand" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationLandImprovementsAndBuildings" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationLandImprovementsAndBuildings" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationFurnitureFixturesAndEquipment" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationFurnitureFixturesAndEquipment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationAccumulatedDepreciation" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationAccumulatedDepreciation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationInvestmentPropertyNet" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationInvestmentPropertyNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationAdvancedReservationDepositsAndRent" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationAdvancedReservationDepositsAndRent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationExpense" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationContingentConsiderationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_NumberOfPropertiesSold" abstract="false" name="NumberOfPropertiesSold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationTransactionCosts" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationTransactionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationPropertyOperatingAndMaintenance" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationPropertyOperatingAndMaintenance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationRealEstateTax" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationRealEstateTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationServiceRetailDiningAndEntertainmentExpenses" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationServiceRetailDiningAndEntertainmentExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationLeaseIncome" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationLeaseIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationServiceRevenue" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationServiceRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DisposalGroupIncludingDiscontinuedOperationInterestBrokerageCommissionsAndOtherNet" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationInterestBrokerageCommissionsAndOtherNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_UKSegmentMember" abstract="true" name="UKSegmentMember" 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-types:domainItemType"/>
  <xs:element id="sui_FloridaKeysMHPortfolioMember" abstract="true" name="FloridaKeysMHPortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_VirginiaDelawareAndFloridaMember" abstract="true" name="VirginiaDelawareAndFloridaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_BluewaterMember" abstract="true" name="BluewaterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_NotesReceivableFairValueAdjustment" abstract="false" name="NotesReceivableFairValueAdjustment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_NumberOfPropertiesOwned" abstract="false" name="NumberOfPropertiesOwned" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_InstallmentNotesReceivableOnManufacturedHomesNetMember" abstract="true" name="InstallmentNotesReceivableOnManufacturedHomesNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_OtherReceivablesNetMember" abstract="true" name="OtherReceivablesNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_TotalNotesAndOtherReceivablesMember" abstract="true" name="TotalNotesAndOtherReceivablesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_NotesduefromRealEstateDevelopersMember" abstract="true" name="NotesduefromRealEstateDevelopersMember" 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"/>
  <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_RVPropertyInCaliforniaMember" abstract="true" name="RVPropertyInCaliforniaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_ReceivableWithImputedInterestTerm" abstract="false" name="ReceivableWithImputedInterestTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <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_ScheduleOfInstallmentNotesReceivableTable" abstract="true" name="ScheduleOfInstallmentNotesReceivableTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <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_InsuranceReceivables" abstract="false" name="InsuranceReceivables" 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_HomeSaleProceeds" abstract="false" name="HomeSaleProceeds" 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_SecuredBorrowingsMember" abstract="true" name="SecuredBorrowingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_CollateralizedReceivablesMember" abstract="true" name="CollateralizedReceivablesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_TransfersAccountedForAsSecuredBorrowingsAssetsGross" abstract="false" name="TransfersAccountedForAsSecuredBorrowingsAssetsGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesGross" abstract="false" name="TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_TransfersAccountedForAsASecuredBorrowingsAssociatedLiabilitiesFairValueAdjustment" abstract="false" name="TransfersAccountedForAsASecuredBorrowingsAssociatedLiabilitiesFairValueAdjustment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_Debtweightedaveragetomaturitylength" abstract="false" name="Debtweightedaveragetomaturitylength" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="sui_TrademarksTradeNamesAndOtherIntangibleAssetsMember" abstract="true" name="TrademarksTradeNamesAndOtherIntangibleAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_ScheduleofFiniteLivedIntangibleAssetsAmortizationExpenseTable" abstract="true" name="ScheduleofFiniteLivedIntangibleAssetsAmortizationExpenseTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="sui_SungeniaJointVentureMember" abstract="true" name="SungeniaJointVentureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_GTSCLLCMember" abstract="true" name="GTSCLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SVLiftLLCMember" abstract="true" name="SVLiftLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SeniorUnsecuredNotesMember" abstract="true" name="SeniorUnsecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_UnsecuredDebtAndOther" abstract="false" name="UnsecuredDebtAndOther" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_DebtAndOther" abstract="false" name="DebtAndOther" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_MaturesFebruary12025March312025Member" abstract="true" name="MaturesFebruary12025March312025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_NumberOfCollateralizedTermLoans" abstract="false" name="NumberOfCollateralizedTermLoans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_DebtInstrumentNumberOfPropertiesSecuringADebtInstument" abstract="false" name="DebtInstrumentNumberOfPropertiesSecuringADebtInstument" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_PropertiessecuringdebtMember" abstract="true" name="PropertiessecuringdebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_RevolvingLoanMember" abstract="true" name="RevolvingLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_TermLoanMember" abstract="true" name="TermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_DebtInstrumentNumberOfPropertiesSecuringADebtInstrument" abstract="false" name="DebtInstrumentNumberOfPropertiesSecuringADebtInstrument" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_PledgedAssetsRealEstateNotSeparatelyReported" abstract="false" name="PledgedAssetsRealEstateNotSeparatelyReported" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="sui_LineOfCreditNumberOfOptionsToExtendMaturityDate" abstract="false" name="LineOfCreditNumberOfOptionsToExtendMaturityDate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="sui_LineOfCreditExtendedMaturityDatePeriod" abstract="false" name="LineOfCreditExtendedMaturityDatePeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="sui_SeniorUnsecuredNotesJanuary2033MaturityMember" abstract="true" name="SeniorUnsecuredNotesJanuary2033MaturityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SeniorUnsecuredNotesApril2032MaturityMember" abstract="true" name="SeniorUnsecuredNotesApril2032MaturityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SeniorUnsecuredNotesNovember2028MaturityMember" abstract="true" name="SeniorUnsecuredNotesNovember2028MaturityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SeniorUnsecuredNotesJuly2031MaturityFirstTrancheMember" abstract="true" name="SeniorUnsecuredNotesJuly2031MaturityFirstTrancheMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SeniorUnsecuredNotesJanuary2029MaturityMember" abstract="true" name="SeniorUnsecuredNotesJanuary2029MaturityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SeriesDPreferredOPUnitsMember" abstract="true" name="SeriesDPreferredOPUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SeriesFPreferredOPUnitsMember" abstract="true" name="SeriesFPreferredOPUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="sui_SeriesGPreferredOPUnitsMember" abstract="true" name="SeriesGPreferredOPUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="sui_SeriesJPreferredOpUnitsMember" abstract="true" name="SeriesJPreferredOpUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <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_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_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>
