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<!-- Creation Date :2023-05-11T12:47:10.3369+00:00 -->
<!-- Copyright (c) 2023 Donnelly Financial Solutions, Inc. All Rights Reserved. -->
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  <xsd:element id="ck0001585389_ConstructionManagementFeeMinimumThresholdValueOfCapitalImprovementWork" name="ConstructionManagementFeeMinimumThresholdValueOfCapitalImprovementWork" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_ConstructionManagementFeePercentOnCostAboveSpecificLimit" name="ConstructionManagementFeePercentOnCostAboveSpecificLimit" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_ContingentEarnOutAdjustment" name="ContingentEarnOutAdjustment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_ContingentEarnoutExpense" name="ContingentEarnoutExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_ConversionOfPartnershipUnitsRequisiteMinimumPeriodOutstanding" name="ConversionOfPartnershipUnitsRequisiteMinimumPeriodOutstanding" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_CreditFacilityCrossDefaultProvisionAmount" name="CreditFacilityCrossDefaultProvisionAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_DateOfRealEstateVentureBecameOperational" name="DateOfRealEstateVentureBecameOperational" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_DebtIssuanceCostsNetOfAccumulatedAmortization" name="DebtIssuanceCostsNetOfAccumulatedAmortization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_DeferredTaxAssetsNonCapitalLosses" name="DeferredTaxAssetsNonCapitalLosses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_DerivativeEffectiveDate" name="DerivativeEffectiveDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_DerivativeStrikeRate" name="DerivativeStrikeRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_DescriptionForTerminationOfOffering" name="DescriptionForTerminationOfOffering" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_DividendRatePercentageIncreasePerAnnum" name="DividendRatePercentageIncreasePerAnnum" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_DividendsPayableStartDateOfRecordDayMonthAndYear" name="DividendsPayableStartDateOfRecordDayMonthAndYear" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_EarnOutUnitExchangePerShare" name="EarnOutUnitExchangePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_EffectiveDateOfForeignCurrencyDerivatives" name="EffectiveDateOfForeignCurrencyDerivatives" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_EstimatedValuePerCommonShare" name="EstimatedValuePerCommonShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_FairValueOfContingentEarnoutLiability" name="FairValueOfContingentEarnoutLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearTwo" name="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_ForeignCurrencyDerivativesNotionalAmount" name="ForeignCurrencyDerivativesNotionalAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_Gainlossonequityinterestsuponacquisition" name="Gainlossonequityinterestsuponacquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_GrossProceedsFromIssuanceOfCommonStock" name="GrossProceedsFromIssuanceOfCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_GuaranteeObligationsRecoursePercentage" name="GuaranteeObligationsRecoursePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_IncreaseDecreaseInManagedRealEstateInvestmentTrustsReceivables" name="IncreaseDecreaseInManagedRealEstateInvestmentTrustsReceivables" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_IncrementalAssetsUnderManagement" name="IncrementalAssetsUnderManagement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_InitialClosingAmountOccurredOnCommitmentRelatedToPreferredStockPurchaseAgreement" name="InitialClosingAmountOccurredOnCommitmentRelatedToPreferredStockPurchaseAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_InterestAccruingOnNotes" name="InterestAccruingOnNotes" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_InvestmentsInAndAdvancesToAffiliates" name="InvestmentsInAndAdvancesToAffiliates" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_IssuanceOfLimitedPartnershipUnitsInOperatingPartnershipInConnectionWithContingentEarnoutRelatedToSelfAdministrationTransaction" name="IssuanceOfLimitedPartnershipUnitsInOperatingPartnershipInConnectionWithContingentEarnoutRelatedToSelfAdministrationTransaction" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_Leverageratio" name="Leverageratio" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_LimitedPartnershipUnits" name="LimitedPartnershipUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_LineOfCreditFacilityAdditionalBorrowingCapacity" name="LineOfCreditFacilityAdditionalBorrowingCapacity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_LineOfCreditFacilityExtensionPeriod" name="LineOfCreditFacilityExtensionPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_LineOfCreditFacilityIncreasedAmountBasedOnConditions" name="LineOfCreditFacilityIncreasedAmountBasedOnConditions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_LineOfCreditFacilitySublimits" name="LineOfCreditFacilitySublimits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_LoanToValueRatio" name="LoanToValueRatio" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour" name="LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_LossContingencyOtherNonCancellableFuturePaymentDueYearOne" name="LossContingencyOtherNonCancellableFuturePaymentDueYearOne" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_LossContingencyOtherNonCancellableFuturePaymentDueYearTwo" name="LossContingencyOtherNonCancellableFuturePaymentDueYearTwo" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_LossContingencyOtherNonCancellableFuturePaymentsDueInYearOne" name="LossContingencyOtherNonCancellableFuturePaymentsDueInYearOne" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_LossContingencyOtherNonCancellableFuturePaymentsDueInYearTwo" name="LossContingencyOtherNonCancellableFuturePaymentsDueInYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_LossRelatedToEquityInterest" name="LossRelatedToEquityInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_MaximumDealerManagerCommissionFeesPercentageOfProceedFromPrimaryOffering" name="MaximumDealerManagerCommissionFeesPercentageOfProceedFromPrimaryOffering" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_MaximumPurchaseCommitmentAmount" name="MaximumPurchaseCommitmentAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_MaximumWeightedAverageNumberOfSharesOutstandingBasicPercentage" name="MaximumWeightedAverageNumberOfSharesOutstandingBasicPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_MezzanineLoanFunding" name="MezzanineLoanFunding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_MinimumPercentageOfOrdinaryTaxableIncomeToBeDistributedToStockholders" name="MinimumPercentageOfOrdinaryTaxableIncomeToBeDistributedToStockholders" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_MonthlyAssetsManagementFeesOneTwelfthOfLessThanOnePercentageOfAssetsValueExceedSpecificValue" name="MonthlyAssetsManagementFeesOneTwelfthOfLessThanOnePercentageOfAssetsValueExceedSpecificValue" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NetIncomeAttributableToTheNonControllingInterestsInOurOperatingPartnership" name="NetIncomeAttributableToTheNonControllingInterestsInOurOperatingPartnership" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_NetIncomeLossAttributableToCommonStockholdersBasic" name="NetIncomeLossAttributableToCommonStockholdersBasic" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership" name="NetIncomeLossAttributableToNoncontrollingInterestInOperatingPartnership" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_NetProceedsFromIssuanceOfRevolverDebt" name="NetProceedsFromIssuanceOfRevolverDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_NonCapitalLossesExpirationYear" name="NonCapitalLossesExpirationYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NonCashAdjustmentFromEquityMethodInvestmentsInJointVentureProperties" name="NonCashAdjustmentFromEquityMethodInvestmentsInJointVentureProperties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_NonCashAdjustmentFromEquityMethodInvestmentsInManagedRealEstateInvestmentTrusts" name="NonCashAdjustmentFromEquityMethodInvestmentsInManagedRealEstateInvestmentTrusts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_NonCashTransactionsDepositAppliedToPurchaseOfRealEstate" name="NonCashTransactionsDepositAppliedToPurchaseOfRealEstate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_NonCashTransactionsDistributionPayable" name="NonCashTransactionsDistributionPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_NonCashTransactionsEarnestDepositsOnAcquisitionsAssignedToManagedReitsAmountsReclassifiedToManagedReitsReceivables" name="NonCashTransactionsEarnestDepositsOnAcquisitionsAssignedToManagedReitsAmountsReclassifiedToManagedReitsReceivables" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_NumberOfDaysAfterLiftingOfPreferredStockToCommonStock" name="NumberOfDaysAfterLiftingOfPreferredStockToCommonStock" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfDevelopmentRealEstateProperties" name="NumberOfDevelopmentRealEstateProperties" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfLandParcelsDevelopedIntoSelfStorageFacilities" name="NumberOfLandParcelsDevelopedIntoSelfStorageFacilities" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfOperatingProperties" name="NumberOfOperatingProperties" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfOperatingRealEstateProperties" name="NumberOfOperatingRealEstateProperties" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfOperatingSelfStorageProperty" name="NumberOfOperatingSelfStorageProperty" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfPropertiesOwnedByManagedREITs" name="NumberOfPropertiesOwnedByManagedREITs" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfRealEstatePropertiesEncumbered" name="NumberOfRealEstatePropertiesEncumbered" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfRealEstateVentures" name="NumberOfRealEstateVentures" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfRightToReceiveSharesFromConversion" name="NumberOfRightToReceiveSharesFromConversion" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfSelfStorageFacilities" name="NumberOfSelfStorageFacilities" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfSelfStorageFacilitiesPurchased" name="NumberOfSelfStorageFacilitiesPurchased" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfSelfStorageRealEstateJointVentures" name="NumberOfSelfStorageRealEstateJointVentures" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfSelfStorageUnits" name="NumberOfSelfStorageUnits" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfSharesExchangedInConnectionWithMerger" name="NumberOfSharesExchangedInConnectionWithMerger" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfSharesIssuableUponConversionOfPartnershipUnits" name="NumberOfSharesIssuableUponConversionOfPartnershipUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfStatesLocatedForSelfStorageFacilities" name="NumberOfStatesLocatedForSelfStorageFacilities" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfTrademarksAcquired" name="NumberOfTrademarksAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_NumberOfUnitsAddedToExistingSelfStorageFacility" name="NumberOfUnitsAddedToExistingSelfStorageFacility" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_OccupancyPercentageOfRealEstateProperties" name="OccupancyPercentageOfRealEstateProperties" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent1" name="OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_OtherComprehensiveIncomeForeignCurrencyHedgeContractGainsLossesNetOfTax" name="OtherComprehensiveIncomeForeignCurrencyHedgeContractGainsLossesNetOfTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" name="OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_PaymentsForDepositsOnAcquisitionOfRealEstateFacilities" name="PaymentsForDepositsOnAcquisitionOfRealEstateFacilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_PaymentsForRealEstateAdditions" name="PaymentsForRealEstateAdditions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_PaymentsToNoncontrollingInterestInOurOp" name="PaymentsToNoncontrollingInterestInOurOp" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_PercentageOfCommonStockIssuedAndOutstanding" name="PercentageOfCommonStockIssuedAndOutstanding" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_PercentageOfEstablishedTargetPerformanceCriteria" name="PercentageOfEstablishedTargetPerformanceCriteria" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_PercentageOfInvestmentFeeDueUponClosing" name="PercentageOfInvestmentFeeDueUponClosing" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_Percentageofprepayofdebtinstrument" name="Percentageofprepayofdebtinstrument" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_PercentageOfRevenueFromTenantProtectionPrograms" name="PercentageOfRevenueFromTenantProtectionPrograms" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_PercentageOfServiceFeesOnGrossRevenueForManagingProperties" name="PercentageOfServiceFeesOnGrossRevenueForManagingProperties" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_PercentageRedemptionPrice" name="PercentageRedemptionPrice" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_PreferredEquityInvestment" name="PreferredEquityInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_PreferredStockSharesRedeemed" name="PreferredStockSharesRedeemed" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_ProcedureOfOwnerOfAJointVentureSubsidiary" name="ProcedureOfOwnerOfAJointVentureSubsidiary" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_PropertyManagementMonthlyManagementFee" name="PropertyManagementMonthlyManagementFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_PurchaseAndSaleAgreementContractIntangibleAssetAcquired" name="PurchaseAndSaleAgreementContractIntangibleAssetAcquired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_PurchaseCommitmentAmount" name="PurchaseCommitmentAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_PurchasePricePerShareOfEstimatedValue" name="PurchasePricePerShareOfEstimatedValue" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_PurchaseUnitsOfLimitedPartnershipInterest" name="PurchaseUnitsOfLimitedPartnershipInterest" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_RateOfDistributionsPayableMonthlyInArrears" name="RateOfDistributionsPayableMonthlyInArrears" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_RealEstateAccumulatedDepreciationForeignExchangeGainLossImpact" name="RealEstateAccumulatedDepreciationForeignExchangeGainLossImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_RealEstateAndConstructionInProcessIncludedInAccountsPayable" name="RealEstateAndConstructionInProcessIncludedInAccountsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_RealEstateFacilitiesForeignExchangeGainLossImpact" name="RealEstateFacilitiesForeignExchangeGainLossImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_RealEstateFacilityAcquisitions" name="RealEstateFacilityAcquisitions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_RealEstateInvestmentPropertyAtCostExcludingConstructionInProgress" name="RealEstateInvestmentPropertyAtCostExcludingConstructionInProgress" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_RealEstateInvestmentPropertyNetExcludingConstructionInProcess" name="RealEstateInvestmentPropertyNetExcludingConstructionInProcess" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_RealEstateInvestmentsUnconsolidatedRealEstateVentures" name="RealEstateInvestmentsUnconsolidatedRealEstateVentures" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_RealEstateOtherFacilityAcquisitions" name="RealEstateOtherFacilityAcquisitions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_RedemptionOfCommonStock" name="RedemptionOfCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_RedemptionOfSharesPendingRedemptionRequests" name="RedemptionOfSharesPendingRedemptionRequests" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_RedemptionPricePercentageOfPremiumAmountRedeemed" name="RedemptionPricePercentageOfPremiumAmountRedeemed" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_ReimbursableCosts" name="ReimbursableCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_ReimbursementsPayableToSamUnderTheAdministrativeServicesAgreement" name="ReimbursementsPayableToSamUnderTheAdministrativeServicesAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_ReinvestmentPlanNoticePeriod" name="ReinvestmentPlanNoticePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_RelatedPartyInvestmentManagementRevenues" name="RelatedPartyInvestmentManagementRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_RelatedPartyTransactionCashPaid" name="RelatedPartyTransactionCashPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_RelatedPartyTransactionPercentageOfSalesPriceOfAssetOnDisposition" name="RelatedPartyTransactionPercentageOfSalesPriceOfAssetOnDisposition" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_RentableAreaAddedToExistingSelfStorageFacility" name="RentableAreaAddedToExistingSelfStorageFacility" type="dtr-types:areaItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_RepaymentOfAccruedInterestDue" name="RepaymentOfAccruedInterestDue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_RepaymentOfMezzanineLoan" name="RepaymentOfMezzanineLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_RequiredAncillaryBusinessRevenueToTotalRevenue" name="RequiredAncillaryBusinessRevenueToTotalRevenue" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_RequiredLeverageRatioOfOurRealEstatePortfolio" name="RequiredLeverageRatioOfOurRealEstatePortfolio" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_RequiredPercentageOfSelfStorageRelatedAssetsOfMergerEntity" name="RequiredPercentageOfSelfStorageRelatedAssetsOfMergerEntity" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_SaleCommissionFeesPercentageOfProceedFromPrimaryOffering" name="SaleCommissionFeesPercentageOfProceedFromPrimaryOffering" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_SecondAndFinalClosingAmountOccurredOnCommitmentRelatedToPreferredStockPurchaseAgreement" name="SecondAndFinalClosingAmountOccurredOnCommitmentRelatedToPreferredStockPurchaseAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_ServicingFeesAccrualDescription" name="ServicingFeesAccrualDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescriptionOfDistributionAndAllocationOfProfitsAndLosses" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardDescriptionOfDistributionAndAllocationOfProfitsAndLosses" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingDate" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingYear" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingYear" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_ShareBasedCompensationArrangementByShareBasedPaymentAwardVotingRights" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVotingRights" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_SharesSoldInPublicOffering" name="SharesSoldInPublicOffering" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_SmallPersonalPropertyAndEquipmentAssetsUsefulLife" name="SmallPersonalPropertyAndEquipmentAssetsUsefulLife" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_StockIssuableDuringPeriodValueDividendReinvestmentPlan" name="StockIssuableDuringPeriodValueDividendReinvestmentPlan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_SubordinatedDistributionValue" name="SubordinatedDistributionValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_TransferAgentAgreementTerm" name="TransferAgentAgreementTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_TransferAgentAgreementTerminationDescription" name="TransferAgentAgreementTerminationDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_TransferAgentRenewalAgreementTerm" name="TransferAgentRenewalAgreementTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_UnrealizedGainLossOnForeignCurrencyAndDerivatives" name="UnrealizedGainLossOnForeignCurrencyAndDerivatives" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ck0001585389_VariableInterestEntityNonvotingOwnershipPercentage" name="VariableInterestEntityNonvotingOwnershipPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_WriteOffOfCarryingValueRelatedToIntangibleAsset" name="WriteOffOfCarryingValueRelatedToIntangibleAsset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_WriteOffOfEquityInterestAndPreexistingRelationshipsUponAcquisitionOfControl" name="WriteOffOfEquityInterestAndPreexistingRelationshipsUponAcquisitionOfControl" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ck0001585389_CommitmentsAndContingenciesLineItems" name="CommitmentsAndContingenciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_DividendDeclaredLineItems" name="DividendDeclaredLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_IncomeTaxLineItems" name="IncomeTaxLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_InvestmentsInUnconsolidatedRealEstateVenturesLineItems" name="InvestmentsInUnconsolidatedRealEstateVenturesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_OrganizationAndNatureOfOperationsLineItems" name="OrganizationAndNatureOfOperationsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_AccordionFeatureMember" name="AccordionFeatureMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_AcquisitionFeesMember" name="AcquisitionFeesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_AcquisitionOfSelfStorageFacilityMember" name="AcquisitionOfSelfStorageFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_AdministrativeServicesAgreementMember" name="AdministrativeServicesAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_AdvisorSSTorontoREITAdvisorsIncAndSSGrowthAdvisorLLCMember" name="AdvisorSSTorontoREITAdvisorsIncAndSSGrowthAdvisorLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_AlgonquinIlMember" name="AlgonquinIlMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_AlgonquinPropertyMember" name="AlgonquinPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_AncillaryOperatingRevenueMember" name="AncillaryOperatingRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_AuroraOntarioMember" name="AuroraOntarioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_AuroraPropertyMember" name="AuroraPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_BMOLoanMember" name="BMOLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_BramptonOntarioMember" name="BramptonOntarioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_BurlingtonIiiPropertyMember" name="BurlingtonIiiPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CanadaPrimeRateMember" name="CanadaPrimeRateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CanadianCitiBankLoanMember" name="CanadianCitiBankLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CanadianDealerOfferedRateEffectiveMarchTwentyEightTwoThousandNineteenMember" name="CanadianDealerOfferedRateEffectiveMarchTwentyEightTwoThousandNineteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CanadianDealerOfferedRateEffectiveMayTwentyEightTwoThousandNineteenMember" name="CanadianDealerOfferedRateEffectiveMayTwentyEightTwoThousandNineteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CanadianDealerOfferedRateEffectiveOctoberElevenTwoThousandEighteenMember" name="CanadianDealerOfferedRateEffectiveOctoberElevenTwoThousandEighteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CanadianDealerOfferedRatesMember" name="CanadianDealerOfferedRatesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CanadianEntitiesMember" name="CanadianEntitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CandianCitiBankLoanMember" name="CandianCitiBankLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ClassA1UnitMember" name="ClassA1UnitMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ClassA2UnitsMember" name="ClassA2UnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ClassAAndClassA1OpUnitsMember" name="ClassAAndClassA1OpUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ClassAAndTCommonStockMember" name="ClassAAndTCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CMBSLoanMember" name="CMBSLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CMBSSASBLoanMember" name="CMBSSASBLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CommonCassWMember" name="CommonCassWMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CommonClassAAndClassTMember" name="CommonClassAAndClassTMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CommonClassTMember" name="CommonClassTMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CorporatesAndOthersMember" name="CorporatesAndOthersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CreditFacilityAgreementMember" name="CreditFacilityAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CreditFacilityTermLoanMember" name="CreditFacilityTermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_DealerManagerMember" name="DealerManagerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_DenominatedInCadEffectiveAprilTwelveTwoThousandAndTwentyTwoMember" name="DenominatedInCadEffectiveAprilTwelveTwoThousandAndTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_DenominatedInCADEffectiveAprilTwelveTwoThousandTwentyOneMember" name="DenominatedInCADEffectiveAprilTwelveTwoThousandTwentyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_DenominatedInCADEffectiveMaySixTwoThousandTwentyOneMember" name="DenominatedInCADEffectiveMaySixTwoThousandTwentyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_DenominatedInCadEffectiveOctoberTwelveTwoThousandAndTwentyTwoMember" name="DenominatedInCadEffectiveOctoberTwelveTwoThousandAndTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_DispositionFeeMember" name="DispositionFeeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_DistributionReinvestmentPlanMember" name="DistributionReinvestmentPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_DupontAndAuroraJointVenturePropertiesMember" name="DupontAndAuroraJointVenturePropertiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_DupontOntarioMember" name="DupontOntarioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_EastYorkOntarioMember" name="EastYorkOntarioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_EmployeeAndDirectorLongTermIncentivePlanMember" name="EmployeeAndDirectorLongTermIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ForeignCurrencyHedgesMember" name="ForeignCurrencyHedgesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_FourPointFiveThreePercentageSeniorNotesMember" name="FourPointFiveThreePercentageSeniorNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_GreaterTorontoAreaOfCanadaMember" name="GreaterTorontoAreaOfCanadaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_InvestmentsInAndAdvancesToManagedREITsMember" name="InvestmentsInAndAdvancesToManagedREITsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_InvestmentThereafterMember" name="InvestmentThereafterMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_JVPropertiesMember" name="JVPropertiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_JvPropertiesPropertyManagementAgreementMember" name="JvPropertiesPropertyManagementAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_JvPropertiesTenantProtectionProgramRevenueMember" name="JvPropertiesTenantProtectionProgramRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_KeybankCmbsLoanMember" name="KeybankCmbsLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_KeyBankFloridaCMBSLoanMember" name="KeyBankFloridaCMBSLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_KeyBankMember" name="KeyBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_KeyBankPropertyLoanMember" name="KeyBankPropertyLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_KeyBankSstIvCmbsLoanMember" name="KeyBankSstIvCmbsLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_KingspointOntarioMember" name="KingspointOntarioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_LaderaOfficeLoanMember" name="LaderaOfficeLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_LondonInterBankOfferedRateEffectiveAugustThreeTwoThousandTwentyMember" name="LondonInterBankOfferedRateEffectiveAugustThreeTwoThousandTwentyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_LongTermIncentivePlanUnitsMember" name="LongTermIncentivePlanUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ManagedReitMember" name="ManagedReitMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ManagedREITPlatformExpensesMember" name="ManagedREITPlatformExpensesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ManagedREITPlatformMember" name="ManagedREITPlatformMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ManagedREITPlatformRevenueMember" name="ManagedREITPlatformRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ManagedREITSMember" name="ManagedREITSMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_MarkhamOntarioMember" name="MarkhamOntarioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_MasterMortgageCommitmentAgreementMember" name="MasterMortgageCommitmentAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_MidlandNorthCarolinaCmbsLoanMember" name="MidlandNorthCarolinaCmbsLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_NonRevolvingCreditFacilityMember" name="NonRevolvingCreditFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_NorthWhitbyOntarioMember" name="NorthWhitbyOntarioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_NorthWhitbyPropertyMember" name="NorthWhitbyPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_OakvilleIIIBMOLoanMember" name="OakvilleIIIBMOLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_OakvilleIIIPropertyMember" name="OakvilleIIIPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_OperatingPartnershipRedemptionRightsMember" name="OperatingPartnershipRedemptionRightsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_OshawaOntarioMember" name="OshawaOntarioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_OtherManagedREITRevenueMember" name="OtherManagedREITRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_OtherRelatedPartyTransactionMember" name="OtherRelatedPartyTransactionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_OxfordPropertyMember" name="OxfordPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PerformanceBasedAwardsMember" name="PerformanceBasedAwardsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PreferredStockRedemptionPeriodAfterTenYearMember" name="PreferredStockRedemptionPeriodAfterTenYearMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PreferredStockRedemptionPeriodFiveMember" name="PreferredStockRedemptionPeriodFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PreferredStockRedemptionPeriodFiveToTenMember" name="PreferredStockRedemptionPeriodFiveToTenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PreferredStockRedemptionPeriodFourMember" name="PreferredStockRedemptionPeriodFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PreferredStockRedemptionPeriodOneMember" name="PreferredStockRedemptionPeriodOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PreferredStockRedemptionPeriodTenMember" name="PreferredStockRedemptionPeriodTenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PreferredStockRedemptionPeriodThereafterMember" name="PreferredStockRedemptionPeriodThereafterMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PreferredStockRedemptionPeriodThreeMember" name="PreferredStockRedemptionPeriodThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PreferredStockRedemptionPeriodTwoMember" name="PreferredStockRedemptionPeriodTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PreferredUnitsInSstViOpMember" name="PreferredUnitsInSstViOpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PrimaryOfferingFormerDealerManagerAgreementMember" name="PrimaryOfferingFormerDealerManagerAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PropertyManagementAgreementMember" name="PropertyManagementAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PropertyManagementMember" name="PropertyManagementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_PropertyOperatingExpensesMember" name="PropertyOperatingExpensesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_RedeemableCommonStockMember" name="RedeemableCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_RegentOntarioMember" name="RegentOntarioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_RegentProperty1Member" name="RegentProperty1Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_RegentPropertyMember" name="RegentPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ReimbursableCostsFromManagedREITsMember" name="ReimbursableCostsFromManagedREITsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_RentalIncomeMember" name="RentalIncomeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SacramentoPropertyMember" name="SacramentoPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SAMAndAffiliatesMember" name="SAMAndAffiliatesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SanGabrielPropertyMember" name="SanGabrielPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ScarboroughOntarioMember" name="ScarboroughOntarioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SecuredLoanMember" name="SecuredLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SecuredOvernightFinancingRateSofrOvernightIndexEffectiveDecemberOneTwoThousandTwentyFiveMember" name="SecuredOvernightFinancingRateSofrOvernightIndexEffectiveDecemberOneTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SecuredOvernightFinancingRateSofrOvernightIndexEffectiveDecemberOneTwoThousandTwentyTwoMember" name="SecuredOvernightFinancingRateSofrOvernightIndexEffectiveDecemberOneTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SecuredOvernightFinancingRateSofrOvernightIndexEffectiveDecemberTwoTwoThousandTwentyFourMember" name="SecuredOvernightFinancingRateSofrOvernightIndexEffectiveDecemberTwoTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SecuredOvernightFinancingRateSofrOvernightIndexEffectiveJuneThirtyTwoThousandTwentyThreeMember" name="SecuredOvernightFinancingRateSofrOvernightIndexEffectiveJuneThirtyTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SecuredOvernightFinancingRateSofrOvernightIndexEffectiveJuneTwentyEightTwoThousandTwentyFourMember" name="SecuredOvernightFinancingRateSofrOvernightIndexEffectiveJuneTwentyEightTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SelfAdministrationTransactionMember" name="SelfAdministrationTransactionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SelfStorageFacilityInPhoenixArizonaMember" name="SelfStorageFacilityInPhoenixArizonaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SelfStorageMember" name="SelfStorageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SelfStorageRentalRevenueMember" name="SelfStorageRentalRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SeriesAConvertiblePreferredStockMember" name="SeriesAConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SeriesAConvertiblePreferredStockPurchaseAgreementMember" name="SeriesAConvertiblePreferredStockPurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ShareRedemptionProgramMember" name="ShareRedemptionProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SmartCentresStorageFinanceLPMember" name="SmartCentresStorageFinanceLPMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SmartstopAssetManagementLimitedLiabilityCompanyMember" name="SmartstopAssetManagementLimitedLiabilityCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SmartstopCommonStockMember" name="SmartstopCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SmartStopOPMember" name="SmartStopOPMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SmartStopTrademarkMember" name="SmartStopTrademarkMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSGTIIAdvisorMember" name="SSGTIIAdvisorMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SsgtIiiAdvisoryAgreementMember" name="SsgtIiiAdvisoryAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SsgtIiiMember" name="SsgtIiiMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SsgtIiiMezzanineLoanMember" name="SsgtIiiMezzanineLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SsgtIiiMezzanineMember" name="SsgtIiiMezzanineMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SsgtIiiOpMember" name="SsgtIiiOpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SsgtIiiOpUnitsAndSlpMember" name="SsgtIiiOpUnitsAndSlpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SsgtIiiOpUnitsAndSsgtIiiSlpMember" name="SsgtIiiOpUnitsAndSsgtIiiSlpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSGTIIMergerAgreementMember" name="SSGTIIMergerAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSGTIIMergerMember" name="SSGTIIMergerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSGTIIUnitPurchaseAgreementMember" name="SSGTIIUnitPurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSGTMergersMember" name="SSGTMergersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSTIVCMBSLoanMember" name="SSTIVCMBSLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSTIVCommonStockMember" name="SSTIVCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSTIVMergerAgreementMember" name="SSTIVMergerAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSTIVMergerMember" name="SSTIVMergerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SstIvTcfLoanMember" name="SstIvTcfLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSTVIAdvisoryAgreementMember" name="SSTVIAdvisoryAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SstViMember" name="SstViMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSTVIMezzanineLoanMember" name="SSTVIMezzanineLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SstViMezzanineMember" name="SstViMezzanineMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SSTVIOPMember" name="SSTVIOPMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SstViOpUnitsAndSlpMember" name="SstViOpUnitsAndSlpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SstViOpUnitsAndSstViSlpMember" name="SstViOpUnitsAndSstViSlpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SstViPreferredEquityMember" name="SstViPreferredEquityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StAugustinePropertyMember" name="StAugustinePropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StJohnsPropertyMember" name="StJohnsPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StockholderServicingFeeAdditionalPaidInCapitalMember" name="StockholderServicingFeeAdditionalPaidInCapitalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StockholderServicingFeeSSTIVAdditionalPaidInCapitalMember" name="StockholderServicingFeeSSTIVAdditionalPaidInCapitalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StoneyCreekLoanMember" name="StoneyCreekLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageGrowthTrustIIAdvisoryAgreementMember" name="StrategicStorageGrowthTrustIIAdvisoryAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageGrowthTrustIiiAcquisitionFeesRevenueMember" name="StrategicStorageGrowthTrustIiiAcquisitionFeesRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageGrowthTrustIIIAdvisoryAgreementMember" name="StrategicStorageGrowthTrustIIIAdvisoryAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageGrowthTrustIIIPropertyManagementAgreementMember" name="StrategicStorageGrowthTrustIIIPropertyManagementAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageGrowthTrustIIITenantProtectionProgramRevenueMember" name="StrategicStorageGrowthTrustIIITenantProtectionProgramRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageGrowthTrustIIPropertyManagementAgreementMember" name="StrategicStorageGrowthTrustIIPropertyManagementAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageGrowthTrustIITenantProgramRevenueMember" name="StrategicStorageGrowthTrustIITenantProgramRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageGrowthTrustIncMember" name="StrategicStorageGrowthTrustIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageOperatingPartnershipIiLimitedPartnershipMember" name="StrategicStorageOperatingPartnershipIiLimitedPartnershipMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageTrademarkMember" name="StrategicStorageTrademarkMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageTrustIVAdvisoryAgreementMember" name="StrategicStorageTrustIVAdvisoryAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageTrustIVIncMember" name="StrategicStorageTrustIVIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageTrustIVPropertyManagementAgreementMember" name="StrategicStorageTrustIVPropertyManagementAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageTrustIVTenantProgramRevenueMember" name="StrategicStorageTrustIVTenantProgramRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageTrustViAcquisitionFeesRevenueMember" name="StrategicStorageTrustViAcquisitionFeesRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageTrustVIAdvisoryAgreementMember" name="StrategicStorageTrustVIAdvisoryAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageTrustVIPropertyManagementAgreementMember" name="StrategicStorageTrustVIPropertyManagementAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicStorageTrustVITenantProgramRevenueMember" name="StrategicStorageTrustVITenantProgramRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_StrategicTransferAgentServicesLlcMember" name="StrategicTransferAgentServicesLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SwinglineLoansMember" name="SwinglineLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_TenantProtectionProgramMember" name="TenantProtectionProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_TerminationArisingOutOfTheGoShopMember" name="TerminationArisingOutOfTheGoShopMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_TerminationUnderCertainOtherCircumstancesMember" name="TerminationUnderCertainOtherCircumstancesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_TimeBasedAwardsMember" name="TimeBasedAwardsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_TorbarrieLoanMember" name="TorbarrieLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_TransferAgentAgreementMember" name="TransferAgentAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_TransferAgentExpensesAdditionalPaidInCapitalMember" name="TransferAgentExpensesAdditionalPaidInCapitalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_TransferAgentFeesExpensedMember" name="TransferAgentFeesExpensedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_TrsSubsidiaryMember" name="TrsSubsidiaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_TwoThousandAndTwentyPerformanceGrantMember" name="TwoThousandAndTwentyPerformanceGrantMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_TwothousandthirtytwoprivateplacementMember" name="TwothousandthirtytwoprivateplacementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_UponAchievementOfCertainFinancialConditionsMember" name="UponAchievementOfCertainFinancialConditionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_UpToFourthAnniversaryMember" name="UpToFourthAnniversaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_UpToSecondAnniversaryMember" name="UpToSecondAnniversaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_UpToThirdAnniversaryMember" name="UpToThirdAnniversaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_VaughanOntarioMember" name="VaughanOntarioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_WalnutGrovePropertyMember" name="WalnutGrovePropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_WhitbyPropertyMember" name="WhitbyPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_CommitmentsAndContingenciesTable" name="CommitmentsAndContingenciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_DividendDeclaredTable" name="DividendDeclaredTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_IncomeTaxTable" name="IncomeTaxTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_InvestmentsInUnconsolidatedRealEstateVenturesTable" name="InvestmentsInUnconsolidatedRealEstateVenturesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_OrganizationAndNatureOfOperationsTable" name="OrganizationAndNatureOfOperationsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ck0001585389_ConvertiblePreferredStockPolicyTextBlock" name="ConvertiblePreferredStockPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_DepreciationOfPersonalPropertyAssetsPolicyTextBlock" name="DepreciationOfPersonalPropertyAssetsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_DividendsTextBlock" name="DividendsTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_InvestmentInStorageFacilitiesPolicyTextBlock" name="InvestmentInStorageFacilitiesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_InvestmentsInAndAdvancesToManagedReitsPolicyTextBlock" name="InvestmentsInAndAdvancesToManagedReitsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_OrganizationalAndOfferingCostsPolicyTextBlock" name="OrganizationalAndOfferingCostsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_RedeemableCommonStockPolicyPolicyTextBlock" name="RedeemableCommonStockPolicyPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_ScheduleOfMaturitiesOfDebtTableTextBlock" name="ScheduleOfMaturitiesOfDebtTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_ScheduleOfRelatedPartyFeesAndReimbursableCostsTableTextBlock" name="ScheduleOfRelatedPartyFeesAndReimbursableCostsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_TrademarksPolicyTextBlock" name="TrademarksPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ck0001585389_UnauditedInformationPolicyTextBlock" name="UnauditedInformationPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
</xsd:schema>
