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  <xsd:element abstract="true" id="sui_CommonOpUnitsMember" name="CommonOpUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_CompassMember" name="CompassMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_ConversionOfSeriesAFourPreferredStock" name="ConversionOfSeriesAFourPreferredStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_ConversionofCommonOPUnitsMember" name="ConversionofCommonOPUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_ConvertibleDebtAspenPreferredOpUnitsJanuary2024Member" name="ConvertibleDebtAspenPreferredOpUnitsJanuary2024Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_ConvertiblePreferredStockSharesIssuedPerShareUponConversion" name="ConvertiblePreferredStockSharesIssuedPerShareUponConversion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_CountryVillageMember" name="CountryVillageMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_DebtInstrumentConvertiblePercentOfAmountByWhichTheMarketPriceOfCommonStockExceedsThreshold" name="DebtInstrumentConvertiblePercentOfAmountByWhichTheMarketPriceOfCommonStockExceedsThreshold" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_DebtInstrumentNumberOfPropertiesSecuringDebtInstument" name="DebtInstrumentNumberOfPropertiesSecuringDebtInstument" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="sui_Debtweightedaveragetomaturitylength" name="Debtweightedaveragetomaturitylength" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_DisclosureofVariableInterestEntitiesTextBlock" name="DisclosureofVariableInterestEntitiesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_DisclosureofvariableinterestentitiesAbstract" name="DisclosureofvariableinterestentitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_DistributionsFromAffiliate" name="DistributionsFromAffiliate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders" name="DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_DividendsIncludingTemporaryEquityCash" name="DividendsIncludingTemporaryEquityCash" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_EqualToOrGreaterThan64ButLessThan120Member" name="EqualToOrGreaterThan64ButLessThan120Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_EquityInterests" name="EquityInterests" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_EquityTransactionTypeAxis" name="EquityTransactionTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_EquityTransactionTypeDomain" name="EquityTransactionTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_FinancedSalesOfManufacturedHomes" name="FinancedSalesOfManufacturedHomes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="sui_FinancialAssetsFairValueDisclosure" name="FinancialAssetsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="sui_FinancialInstrumentsSubjecttoMandatoryRedemptionRateOfReturn" name="FinancialInstrumentsSubjecttoMandatoryRedemptionRateOfReturn" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_FinancialInstrumentsSubjecttoMandatoryRedemptionTerm" name="FinancialInstrumentsSubjecttoMandatoryRedemptionTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_FinancialInstrumentsSubjecttoMandatoryRedemptionValueofSharesIssued" name="FinancialInstrumentsSubjecttoMandatoryRedemptionValueofSharesIssued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_GTSCMember" name="GTSCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_GeneralAndAdministrativeRealProperty" name="GeneralAndAdministrativeRealProperty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_GlenEllisMember" name="GlenEllisMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_GreaterThan15ButLessThan64Member" name="GreaterThan15ButLessThan64Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_HaciendadelRioMember" name="HaciendadelRioMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_HidnPinesMember" name="HidnPinesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_HighwayWestMember" name="HighwayWestMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_HomeSalesAndHomeRentalsSegmentMember" name="HomeSalesAndHomeRentalsSegmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_IncomeFromRealPropertyMember" name="IncomeFromRealPropertyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares" name="IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_InstallmentNotesReceivableMember" name="InstallmentNotesReceivableMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="sui_InstallmentNotesReceivableOnManufacturedHomesNetMember" name="InstallmentNotesReceivableOnManufacturedHomesNetMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_InsuranceReceivables" name="InsuranceReceivables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_InterestMember" name="InterestMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_Issuanceofnotesandotherreceivables" name="Issuanceofnotesandotherreceivables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_JensenPropertyAcquisitionMember" name="JensenPropertyAcquisitionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_KeyEmployeesMember" name="KeyEmployeesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_LeafVerdeRVResortMember" name="LeafVerdeRVResortMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_LeisurePointResortMember" name="LeisurePointResortMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_LessThanOrEqualTo15Member" name="LessThanOrEqualTo15Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_LesseeOperatingLeaseGrossBaseRent" name="LesseeOperatingLeaseGrossBaseRent" nillable="true" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_LesseeOperatingLeaseLeaseNotYetCommencedValue" name="LesseeOperatingLeaseLeaseNotYetCommencedValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_LifeCompaniesMember" name="LifeCompaniesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_LineOfCreditFacilityAdditionalBorrowingCapacity" name="LineOfCreditFacilityAdditionalBorrowingCapacity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_LineOfCreditManufacturedHomeFloorPlanFacilityMember" name="LineOfCreditManufacturedHomeFloorPlanFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_LongTermDebtExcludingSecuredBorrowingsFairValueDisclosure" name="LongTermDebtExcludingSecuredBorrowingsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_MarketConditionMember" name="MarketConditionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_MarketableSecuritiesMember" name="MarketableSecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_MasseysLandingMember" name="MasseysLandingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_MinimumPercentOfIncomeFromQualifyingSourcesToAllowForRealEstateInvestmentTrustClassification" name="MinimumPercentOfIncomeFromQualifyingSourcesToAllowForRealEstateInvestmentTrustClassification" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_MobileHomeMember" name="MobileHomeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_NGSunLLCMember" name="NGSunLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_NGSunWhitewaterMember" name="NGSunWhitewaterMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock" name="NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStockAndTemporaryEquity" name="NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestandReturnsfromPreferredStockAndTemporaryEquity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_Netincomeattributabletocommonshareholdersafterrestrictedstockallocation" name="Netincomeattributabletocommonshareholdersafterrestrictedstockallocation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationEscrow" name="NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationEscrow" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationValueOfSharesIssued" name="NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationValueOfSharesIssued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_NotesReceivableRepurchasePercentage" name="NotesReceivableRepurchasePercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_NotesReceivables" name="NotesReceivables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_NumberOfLoanPaymentsMadeDomain" name="NumberOfLoanPaymentsMadeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_NumberOfPaymentsMadeAxis" name="NumberOfPaymentsMadeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_NumberofRealEstateUnitsReleased" name="NumberofRealEstateUnitsReleased" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_NumberofUnitsinRealEstatePropertyDevelopmentSites" name="NumberofUnitsinRealEstatePropertyDevelopmentSites" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="sui_NumberofUnitsinRealEstatePropertyLandDevelopmentSites" name="NumberofUnitsinRealEstatePropertyLandDevelopmentSites" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_OakCrestMember" name="OakCrestMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_OceanWestMember" name="OceanWestMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_OperatingAndFinanceLeasePayments" name="OperatingAndFinanceLeasePayments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_OperatingAndFinanceLeasesLiability" name="OperatingAndFinanceLeasesLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="sui_OperatingAndFinanceLeasesLiabilityPaymentDue" name="OperatingAndFinanceLeasesLiabilityPaymentDue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="sui_OperatingAndFinanceLeasesLiabilityPaymentsDueYearFive" name="OperatingAndFinanceLeasesLiabilityPaymentsDueYearFive" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="sui_OperatingAndFinanceLeasesLiabilityPaymentsDueYearFour" name="OperatingAndFinanceLeasesLiabilityPaymentsDueYearFour" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="sui_OperatingAndFinanceLeasesLiabilityPaymentsDueYearThree" name="OperatingAndFinanceLeasesLiabilityPaymentsDueYearThree" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="sui_OperatingAndFinanceLeasesLiabilityPaymentsDueYearTwo" name="OperatingAndFinanceLeasesLiabilityPaymentsDueYearTwo" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="sui_OperatingAndFinanceLeasesLiabilityPaymentsDueafterYearFive" name="OperatingAndFinanceLeasesLiabilityPaymentsDueafterYearFive" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="sui_OperatingAndFinanceLeasesLiabilityPaymentsRemainderofFiscalYear" name="OperatingAndFinanceLeasesLiabilityPaymentsRemainderofFiscalYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="sui_OperatingAndFinanceLeasesLiabilityUndiscountedExcessAmount" name="OperatingAndFinanceLeasesLiabilityUndiscountedExcessAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="sui_OperatingExpensesAndCostOfSales" name="OperatingExpensesAndCostOfSales" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_OrigenFinancialServicesMember" name="OrigenFinancialServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_OtherReceivablesForRentWaterSewerUsage" name="OtherReceivablesForRentWaterSewerUsage" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_OtherReceivablesNetMember" name="OtherReceivablesNetMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_OtherRevenuesSegment" name="OtherRevenuesSegment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_PecanParkMember" name="PecanParkMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_PeriodIncreaseDecreaseInNotesReceivable" name="PeriodIncreaseDecreaseInNotesReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_PetoskeyRVResortMember" name="PetoskeyRVResortMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_PreferredEquityMandatorilyRedeemableMember" name="PreferredEquityMandatorilyRedeemableMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_PreferredreturntoSeriesA1preferredOPunits" name="PreferredreturntoSeriesA1preferredOPunits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="sui_PrepaymentPenaltyDebt" name="PrepaymentPenaltyDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_PrincipalReductionFromRepossessedHomes" name="PrincipalReductionFromRepossessedHomes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_PropertiessecuringdebtMember" name="PropertiessecuringdebtMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_RVMember" name="RVMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_RealEstateInvestmentPropertyLandImprovementsAndBuildings" name="RealEstateInvestmentPropertyLandImprovementsAndBuildings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_RealPropertyOperationsSegmentMember" name="RealPropertyOperationsSegmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_ReceivableWithImputedInterestTerm" name="ReceivableWithImputedInterestTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_RemeasurementOfMarketableSecurities" name="RemeasurementOfMarketableSecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_RentalHomeRevenue" name="RentalHomeRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_RentalHomeRevenueMember" name="RentalHomeRevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_RepaymentofNotesandOtherReceivables" name="RepaymentofNotesandOtherReceivables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="sui_RepurchasePricePercentageTableTextBlock" name="RepurchasePricePercentageTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_RequiredMinimumPercentOfTaxableIncomeDistributedToStockHolders" name="RequiredMinimumPercentOfTaxableIncomeDistributedToStockHolders" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_ReunionLakeMember" name="ReunionLakeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_RevenueFromHomeSales" name="RevenueFromHomeSales" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_RevenueFromHomeSalesMember" name="RevenueFromHomeSalesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_RezPlotMember" name="RezPlotMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_RightofUseAssetObtainedinExchangeforNewOperatingLeaseLiability" name="RightofUseAssetObtainedinExchangeforNewOperatingLeaseLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_RiverPlantationMember" name="RiverPlantationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_RiverRunRanchMember" name="RiverRunRanchMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_ScheduleOfCollateralizedLoansTableTextBlock" name="ScheduleOfCollateralizedLoansTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_ScheduleOfInstallmentNotesReceivableTable" name="ScheduleOfInstallmentNotesReceivableTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_ScheduleOfInstallmentNotesReceivableTableTextBlock" name="ScheduleOfInstallmentNotesReceivableTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_ScheduleOfNotesAndOtherReceivablesTableTextBlock" name="ScheduleOfNotesAndOtherReceivablesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_ScheduleofFiniteLivedIntangibleAssetsAmortizationExpenseTable" name="ScheduleofFiniteLivedIntangibleAssetsAmortizationExpenseTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_ScheduleofIntangibleAssetsAmortizationExpenseTableTextBlock" name="ScheduleofIntangibleAssetsAmortizationExpenseTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_SecuredDebtAndOtherBorrowings" name="SecuredDebtAndOtherBorrowings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_SeriesA1PreferredOpUnitsMember" name="SeriesA1PreferredOpUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_SeriesA3PreferredOpUnitsMember" name="SeriesA3PreferredOpUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_SeriesA4PreferredOpUnitsMember" name="SeriesA4PreferredOpUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_SeriesA4PreferredStockMember" name="SeriesA4PreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_SeriesB3PreferredOPUnitsMember" name="SeriesB3PreferredOPUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_SeriesCpreferredOPunitsMember" name="SeriesCpreferredOPunitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_SeriesDPreferredOPUnitsMember" name="SeriesDPreferredOPUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest" name="SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_ShelbyPropertiesMember" name="ShelbyPropertiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_SilverCreekMember" name="SilverCreekMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_SmithCreekCrossingMember" name="SmithCreekCrossingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_StockBasedCompensationAmortizationAndForfeitures" name="StockBasedCompensationAmortizationAndForfeitures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="sui_StockIssuedDuringPeriodIncludingTemporaryEquityValueConversionofConvertibleSecurities" name="StockIssuedDuringPeriodIncludingTemporaryEquityValueConversionofConvertibleSecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_StockIssuedDuringPeriodValueNewIssuesSeriesA3PreferredOPUnits" name="StockIssuedDuringPeriodValueNewIssuesSeriesA3PreferredOPUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_Sui_chulavistamemberMember" name="Sui_chulavistamemberMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_SunNGRVResortsMember" name="SunNGRVResortsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_SungeniaJVMember" name="SungeniaJVMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_TemporaryEquityAndStockholdersEquityIncludingPortionAttributabletoNoncontrollingInterest" name="TemporaryEquityAndStockholdersEquityIncludingPortionAttributabletoNoncontrollingInterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="sui_TemporaryEquityAndStockholdersEquityInterestinSubsidiaryEarnings" name="TemporaryEquityAndStockholdersEquityInterestinSubsidiaryEarnings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_TemporaryEquityDividends" name="TemporaryEquityDividends" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="sui_TemporaryEquityDividendsForTermOnePercentage" name="TemporaryEquityDividendsForTermOnePercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_TemporaryEquityDividendsForTermTwoPercentage" name="TemporaryEquityDividendsForTermTwoPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_TemporaryEquityIssuancePrice" name="TemporaryEquityIssuancePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_TemporaryEquityRedemptionPricePerShareIncludingAccruedandUnpaidDividends" name="TemporaryEquityRedemptionPricePerShareIncludingAccruedandUnpaidDividends" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_TermLoanMember" name="TermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_TheSandsMember" name="TheSandsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_TimeBasedMember" name="TimeBasedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_TransientRVRentalRevenueRecognizedPercentage" name="TransientRVRentalRevenueRecognizedPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_TransientRVRevenue" name="TransientRVRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_TwoThousandFifteenEquityPlanMember" name="TwoThousandFifteenEquityPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_VIEasaPercentageofTotalEquity" name="VIEasaPercentageofTotalEquity" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="sui_VariableInterestEntitiesConsolidatedTotalLiabilitiesAndStockholdersEquity" name="VariableInterestEntitiesConsolidatedTotalLiabilitiesAndStockholdersEquity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="sui_VariableInterestEntityEquityInterestsIssued" name="VariableInterestEntityEquityInterestsIssued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="sui_VariableInterestEntityEquityInterestsIssuedFloatingRate" name="VariableInterestEntityEquityInterestsIssuedFloatingRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="sui_VariableInterestEntityasaPercentageofConsolidatedAssets" name="VariableInterestEntityasaPercentageofConsolidatedAssets" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="sui_VariableInterestEntityasaPercentageofConsolidatedLiabilities" name="VariableInterestEntityasaPercentageofConsolidatedLiabilities" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="sui_VestingTypeAxis" name="VestingTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_VestingTypeDomain" name="VestingTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_WaterOakMember" name="WaterOakMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="sui_WeightedAverageCommonSharesOutstandingAbstract" name="WeightedAverageCommonSharesOutstandingAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
</xsd:schema>
</XBRL>
