<?xml version="1.0" encoding="US-ASCII" ?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.5a -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
    <!-- Field: Doc-Info; Name: Misc; Value: 96Mps7xRiXgen8uDanwsWaWG+bP9z5Z8SekhvWB5bWla3yQnff/heSwDme+2MakK -->
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:dei="http://xbrl.sec.gov/dei/2026" xmlns:us-gaap="http://fasb.org/us-gaap/2026" xmlns:srt="http://fasb.org/srt/2026" xmlns:srt-types="http://fasb.org/srt-types/2026" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:SQFT="http://presidiopt.com/20260331" elementFormDefault="qualified" targetNamespace="http://presidiopt.com/20260331">
    <annotation>
      <appinfo>
        <link:roleType roleURI="http://presidiopt.com/role/Cover" id="Cover">
          <link:definition>00000001 - Document - Cover</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/BalanceSheets" id="BalanceSheets">
          <link:definition>00000002 - Statement - Consolidated Balance Sheets</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/BalanceSheetsParenthetical" id="BalanceSheetsParenthetical">
          <link:definition>00000003 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/StatementsOfOperations" id="StatementsOfOperations">
          <link:definition>00000004 - Statement - Consolidated Statements of Operations</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/StatementsOfChangesInEquity" id="StatementsOfChangesInEquity">
          <link:definition>00000005 - Statement - Consolidated Statements of Changes in Equity</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/StatementsOfCashFlows" id="StatementsOfCashFlows">
          <link:definition>00000006 - Statement - Consolidated Statements of Cash Flows</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/OrganizationAndBasisOfPresentation" id="OrganizationAndBasisOfPresentation">
          <link:definition>999007 - Disclosure - ORGANIZATION AND BASIS OF PRESENTATION</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/SignificantAccountingPolicies" id="SignificantAccountingPolicies">
          <link:definition>999008 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/RecentRealEstateTransactions" id="RecentRealEstateTransactions">
          <link:definition>999009 - Disclosure - RECENT REAL ESTATE TRANSACTIONS</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/RealEstateAssets" id="RealEstateAssets">
          <link:definition>999010 - Disclosure - REAL ESTATE ASSETS</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/LeaseIntangibles" id="LeaseIntangibles">
          <link:definition>999011 - Disclosure - LEASE INTANGIBLES</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/OtherAssets" id="OtherAssets">
          <link:definition>999012 - Disclosure - OTHER ASSETS</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/MortgageNotesPayable" id="MortgageNotesPayable">
          <link:definition>999013 - Disclosure - MORTGAGE NOTES PAYABLE</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/NotesPayable" id="NotesPayable">
          <link:definition>999014 - Disclosure - NOTES PAYABLE</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/InvestmentInConduitPharmaceuticals" id="InvestmentInConduitPharmaceuticals">
          <link:definition>999015 - Disclosure - INVESTMENT IN CONDUIT PHARMACEUTICALS</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/CommitmentsAndContingencies" id="CommitmentsAndContingencies">
          <link:definition>999016 - Disclosure - COMMITMENTS AND CONTINGENCIES</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/StockholdersEquity" id="StockholdersEquity">
          <link:definition>999017 - Disclosure - STOCKHOLDERS&#8217; EQUITY</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/Share-basedIncentivePlan" id="Share-basedIncentivePlan">
          <link:definition>999018 - Disclosure - SHARE-BASED INCENTIVE PLAN</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/Segments" id="Segments">
          <link:definition>999019 - Disclosure - SEGMENTS</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/IncomeTaxProvision" id="IncomeTaxProvision">
          <link:definition>999020 - Disclosure - INCOME TAX PROVISION</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/RelatedParty" id="RelatedParty">
          <link:definition>999021 - Disclosure - RELATED PARTY</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/SubsequentEvents" id="SubsequentEvents">
          <link:definition>999022 - Disclosure - SUBSEQUENT EVENTS</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/SignificantAccountingPoliciesPolicies" id="SignificantAccountingPoliciesPolicies">
          <link:definition>999023 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/SignificantAccountingPoliciesTables" id="SignificantAccountingPoliciesTables">
          <link:definition>999024 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/RealEstateAssetsTables" id="RealEstateAssetsTables">
          <link:definition>999025 - Disclosure - REAL ESTATE ASSETS (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/LeaseIntangiblesTables" id="LeaseIntangiblesTables">
          <link:definition>999026 - Disclosure - LEASE INTANGIBLES (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/OtherAssetsTables" id="OtherAssetsTables">
          <link:definition>999027 - Disclosure - OTHER ASSETS (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/MortgageNotesPayableTables" id="MortgageNotesPayableTables">
          <link:definition>999028 - Disclosure - MORTGAGE NOTES PAYABLE (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/StockholdersEquityTables" id="StockholdersEquityTables">
          <link:definition>999029 - Disclosure - STOCKHOLDERS&#8217; EQUITY (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/Share-basedIncentivePlanTables" id="Share-basedIncentivePlanTables">
          <link:definition>999030 - Disclosure - SHARE-BASED INCENTIVE PLAN (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/SegmentsTables" id="SegmentsTables">
          <link:definition>999031 - Disclosure - SEGMENTS (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/SubsequentEventsTables" id="SubsequentEventsTables">
          <link:definition>999032 - Disclosure - SUBSEQUENT EVENTS (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/OrganizationAndBasisOfPresentationDetailsNarrative" id="OrganizationAndBasisOfPresentationDetailsNarrative">
          <link:definition>999033 - Disclosure - ORGANIZATION AND BASIS OF PRESENTATION (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfFairValueMeasurementNonrecurringDetails" id="ScheduleOfFairValueMeasurementNonrecurringDetails">
          <link:definition>999034 - Disclosure - SCHEDULE OF FAIR VALUE MEASUREMENT NONRECURRING (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfWeightedAverageDilutiveCommonStockDetails" id="ScheduleOfWeightedAverageDilutiveCommonStockDetails">
          <link:definition>999035 - Disclosure - SCHEDULE OF WEIGHTED AVERAGE DILUTIVE COMMON STOCK (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/SignificantAccountingPoliciesDetailsNarrative" id="SignificantAccountingPoliciesDetailsNarrative">
          <link:definition>999036 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/RecentRealEstateTransactionsDetailsNarrative" id="RecentRealEstateTransactionsDetailsNarrative">
          <link:definition>999037 - Disclosure - RECENT REAL ESTATE TRANSACTIONS (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/RealEstateAssetsDetailsNarrative" id="RealEstateAssetsDetailsNarrative">
          <link:definition>999038 - Disclosure - REAL ESTATE ASSETS (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfRealEstateAssetsAndLeaseIntangiblesNetDetails" id="ScheduleOfRealEstateAssetsAndLeaseIntangiblesNetDetails">
          <link:definition>999039 - Disclosure - SCHEDULE OF REAL ESTATE ASSETS AND LEASE INTANGIBLES, NET (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfRealEstateAssetsAndLeaseIntangiblesNetDetailsParenthetical" id="ScheduleOfRealEstateAssetsAndLeaseIntangiblesNetDetailsParenthetical">
          <link:definition>999040 - Disclosure - SCHEDULE OF REAL ESTATE ASSETS AND LEASE INTANGIBLES, NET (Details) (Parenthetical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfOtherIntangibleAssetsAndAccumulatedAmortizationDetails" id="ScheduleOfOtherIntangibleAssetsAndAccumulatedAmortizationDetails">
          <link:definition>999041 - Disclosure - SCHEDULE OF OTHER INTANGIBLE ASSETS AND ACCUMULATED AMORTIZATION (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/LeaseIntangiblesDetailsNarrative" id="LeaseIntangiblesDetailsNarrative">
          <link:definition>999042 - Disclosure - LEASE INTANGIBLES (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/LeaseIntangiblesDetailsNarrativeDefOnly" id="LeaseIntangiblesDetailsNarrativeDefOnly">
          <link:definition>999042 - Disclosure - LEASE INTANGIBLES (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfAmortizationExpenseLeaseIntangibleAssetsDetails" id="ScheduleOfAmortizationExpenseLeaseIntangibleAssetsDetails">
          <link:definition>999043 - Disclosure - SCHEDULE OF AMORTIZATION EXPENSE LEASE INTANGIBLE ASSETS (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfOtherAssetsDetails" id="ScheduleOfOtherAssetsDetails">
          <link:definition>999044 - Disclosure - SCHEDULE OF OTHER ASSETS (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfMortgageNotesPayableDetails" id="ScheduleOfMortgageNotesPayableDetails">
          <link:definition>999045 - Disclosure - SCHEDULE OF MORTGAGE NOTES PAYABLE (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfMortgageNotesPayableDetailsParenthetical" id="ScheduleOfMortgageNotesPayableDetailsParenthetical">
          <link:definition>999046 - Disclosure - SCHEDULE OF MORTGAGE NOTES PAYABLE (Details) (Parenthetical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfPrincipalPaymentsOfMortgageNotesPayableDetails" id="ScheduleOfPrincipalPaymentsOfMortgageNotesPayableDetails">
          <link:definition>999047 - Disclosure - SCHEDULE OF PRINCIPAL PAYMENTS OF MORTGAGE NOTES PAYABLE (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/MortgageNotesPayableDetailsNarrative" id="MortgageNotesPayableDetailsNarrative">
          <link:definition>999048 - Disclosure - MORTGAGE NOTES PAYABLE (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/NotesPayableDetailsNarrative" id="NotesPayableDetailsNarrative">
          <link:definition>999049 - Disclosure - NOTES PAYABLE (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/InvestmentInConduitPharmaceuticalsDetailsNarrative" id="InvestmentInConduitPharmaceuticalsDetailsNarrative">
          <link:definition>999050 - Disclosure - INVESTMENT IN CONDUIT PHARMACEUTICALS (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/CommitmentsAndContingenciesDetailsNarrative" id="CommitmentsAndContingenciesDetailsNarrative">
          <link:definition>999051 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/StockholdersEquityDetailsNarrative" id="StockholdersEquityDetailsNarrative">
          <link:definition>999052 - Disclosure - STOCKHOLDERS&#8217; EQUITY (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfDividendsDetails" id="ScheduleOfDividendsDetails">
          <link:definition>999053 - Disclosure - SCHEDULE OF DIVIDENDS (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfRestrictedStockDetails" id="ScheduleOfRestrictedStockDetails">
          <link:definition>999054 - Disclosure - SCHEDULE OF RESTRICTED STOCK (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/Share-basedIncentivePlanDetailsNarrative" id="Share-basedIncentivePlanDetailsNarrative">
          <link:definition>999055 - Disclosure - SHARE-BASED INCENTIVE PLAN (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfSegmentActivityOfOperationsAndFinancialPositionDetails" id="ScheduleOfSegmentActivityOfOperationsAndFinancialPositionDetails">
          <link:definition>999056 - Disclosure - SCHEDULE OF SEGMENT ACTIVITY OF OPERATIONS AND FINANCIAL POSITION (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfSegmentActivityOfGaapOperationsAndFinancialPositionDetails" id="ScheduleOfSegmentActivityOfGaapOperationsAndFinancialPositionDetails">
          <link:definition>999057 - Disclosure - SCHEDULE OF SEGMENT ACTIVITY OF GAAP OPERATIONS AND FINANCIAL POSITION (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfReconciliationOfAssetBySegmentDetails" id="ScheduleOfReconciliationOfAssetBySegmentDetails">
          <link:definition>999058 - Disclosure - SCHEDULE OF RECONCILIATION OF ASSET BY SEGMENT (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfCapitalExpenditureByReportableSegmentDetails" id="ScheduleOfCapitalExpenditureByReportableSegmentDetails">
          <link:definition>999059 - Disclosure - SCHEDULE OF CAPITAL EXPENDITURE BY REPORTABLE SEGMENT (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/SegmentsDetailsNarrative" id="SegmentsDetailsNarrative">
          <link:definition>999060 - Disclosure - SEGMENTS (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/IncomeTaxProvisionDetailsNarrative" id="IncomeTaxProvisionDetailsNarrative">
          <link:definition>999061 - Disclosure - INCOME TAX PROVISION (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/RelatedPartyDetailsNarrative" id="RelatedPartyDetailsNarrative">
          <link:definition>999062 - Disclosure - RELATED PARTY (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfOtherNonRealEstateAssetsAndLiabilitiesDetails" id="ScheduleOfOtherNonRealEstateAssetsAndLiabilitiesDetails">
          <link:definition>999063 - Disclosure - SCHEDULE OF OTHER NON REAL ESTATE ASSETS AND LIABILITIES (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfAntidilutiveSecuritiesOfEarningPerShareDetails" id="ScheduleOfAntidilutiveSecuritiesOfEarningPerShareDetails">
          <link:definition>999064 - Disclosure - SCHEDULE OF ANTIDILUTIVE SECURITIES OF EARNING PER SHARE (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfCommercialPropertiesDetails" id="ScheduleOfCommercialPropertiesDetails">
          <link:definition>999065 - Disclosure - SCHEDULE OF COMMERCIAL PROPERTIES (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfSegmentReportingInformationNetOperatingIncomeBySegmentDetails" id="ScheduleOfSegmentReportingInformationNetOperatingIncomeBySegmentDetails">
          <link:definition>999066 - Disclosure - SCHEDULE OF SEGMENT REPORTING INFORMATION NET OPERATING INCOME BY SEGMENT (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfSegmentReportingInformationBySegmentDetails" id="ScheduleOfSegmentReportingInformationBySegmentDetails">
          <link:definition>999067 - Disclosure - SCHEDULE OF SEGMENT REPORTING INFORMATION BY SEGMENT (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfSegmentReconciliationOfOtherItemsFromSegmentToConsolidatedDetails" id="ScheduleOfSegmentReconciliationOfOtherItemsFromSegmentToConsolidatedDetails">
          <link:definition>999068 - Disclosure - SCHEDULE OF SEGMENT RECONCILIATION OF OTHER ITEMS FROM SEGMENT TO CONSOLIDATED (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfIncomeTaxDetails" id="ScheduleOfIncomeTaxDetails">
          <link:definition>999069 - Disclosure - SCHEDULE OF INCOME TAX (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfEffectiveIncomeTaxRateReconciliationDetails" id="ScheduleOfEffectiveIncomeTaxRateReconciliationDetails">
          <link:definition>999070 - Disclosure - SCHEDULE OF EFFECTIVE INCOME TAX RATE RECONCILIATION (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfDeferredTaxAssetsAndLiabilitiesDetails" id="ScheduleOfDeferredTaxAssetsAndLiabilitiesDetails">
          <link:definition>999071 - Disclosure - SCHEDULE OF DEFERRED TAX ASSETS AND LIABILITIES (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/ScheduleOfIncomeTaxesPaidDetails" id="ScheduleOfIncomeTaxesPaidDetails">
          <link:definition>999072 - Disclosure - SCHEDULE OF INCOME TAXES PAID (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://presidiopt.com/role/SubsequentEventsDetailsNarrative" id="SubsequentEventsDetailsNarrative">
          <link:definition>999073 - Disclosure - SUBSEQUENT EVENTS (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:linkbaseRef xlink:type="simple" xlink:href="sqft-20260331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Presentation Links" />
        <link:linkbaseRef xlink:type="simple" xlink:href="sqft-20260331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Label Links" />
        <link:linkbaseRef xlink:type="simple" xlink:href="sqft-20260331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Calculation Links" />
        <link:linkbaseRef xlink:type="simple" xlink:href="sqft-20260331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links" />
      </appinfo>
    </annotation>
    <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
    <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
    <import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd" />
    <import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd" />
    <import namespace="http://fasb.org/us-types/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-types-2026.xsd" />
    <import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
    <import namespace="http://xbrl.sec.gov/country/2026" schemaLocation="https://xbrl.sec.gov/country/2026/country-2026.xsd" />
    <import namespace="http://xbrl.sec.gov/stpr/2026" schemaLocation="https://xbrl.sec.gov/stpr/2026/stpr-2026.xsd" />
    <import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd" />
    <import namespace="http://fasb.org/srt-types/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-types-2026.xsd" />
    <element id="SQFT_CommercialPropertyMember" name="CommercialPropertyMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ModelHomePropertiesMember" name="ModelHomePropertiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_SeriesACommonStockMember" name="SeriesACommonStockMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_MortgageNotesMember" name="MortgageNotesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_OneHomebuilderMember" name="OneHomebuilderMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_HomeBuilderMember" name="HomeBuilderMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RentalIncomeMember" name="RentalIncomeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_OneTenantMember" name="OneTenantMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RevenueBenchmarkMember" name="RevenueBenchmarkMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_FinitelivedIntangiblesOtherThanLeaseIntangiblesMember" name="FinitelivedIntangiblesOtherThanLeaseIntangiblesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ModelHomeMember" name="ModelHomeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ConduitPharmaceuticalsIncMember" name="ConduitPharmaceuticalsIncMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_LeaseIntangiblesMember" name="LeaseIntangiblesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DakotaCenterMember" name="DakotaCenterMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_SheaCenterIIMember" name="SheaCenterIIMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NTRPropertyManagementMember" name="NTRPropertyManagementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PolarMultiStrategyMasterFundMember" name="PolarMultiStrategyMasterFundMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DomesticTaxJurisdictionMember" name="DomesticTaxJurisdictionMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PrivateWarrantsMember" name="PrivateWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_CDTCommonStockMember" name="CDTCommonStockMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_CommonStockWarrantsMember" name="CommonStockWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PlacementAgentWarrantsMember" name="PlacementAgentWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_SeriesAWarrantsMember" name="SeriesAWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_UnvestedCommonStockGrantsMember" name="UnvestedCommonStockGrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RetailPropertiesMember" name="RetailPropertiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_OfficeBuildingsMember" name="OfficeBuildingsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_OfficeIndustrialPropertiesMember" name="OfficeIndustrialPropertiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_IndustrialBuildingsMember" name="IndustrialBuildingsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_GenesisPlazaMember" name="GenesisPlazaMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_GrandPacificCenterMember" name="GrandPacificCenterMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ArapahoeCenterMember" name="ArapahoeCenterMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_WestFargoIndustrialMember" name="WestFargoIndustrialMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_The300NPMember" name="The300NPMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_OneParkCenterMember" name="OneParkCenterMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_MandolinMember" name="MandolinMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_BaltimoreMember" name="BaltimoreMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PresidioPropertyTrustIncPropertiesMember" name="PresidioPropertyTrustIncPropertiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_UnionTownCenterMember" name="UnionTownCenterMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_The300N.PMember" name="The300N.PMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ResearchParkwayMember" name="ResearchParkwayMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_TenantInCommonOneMember" name="TenantInCommonOneMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_TenantInCommonTwoMember" name="TenantInCommonTwoMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NetREITGenesisMember" name="NetREITGenesisMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NetREITGenesisTwoMember" name="NetREITGenesisTwoMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_SharesIssuedForOwnershipExchangeMember" name="SharesIssuedForOwnershipExchangeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_SheaCenterTwoMember" name="SheaCenterTwoMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NetREITPalmSelfStorageLPMember" name="NetREITPalmSelfStorageLPMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_UnionTownCenterAndResearchParkwayMember" name="UnionTownCenterAndResearchParkwayMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_LeasingCostsMember" name="LeasingCostsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_AboveMarketLeaseMember" name="AboveMarketLeaseMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_IntangibleLiabilitiesMember" name="IntangibleLiabilitiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ArapahoeServiceCenterMember" name="ArapahoeServiceCenterMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_OneParkCentreMember" name="OneParkCentreMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_SubtotalPresidioPropertyTrustIncPropertiesMember" name="SubtotalPresidioPropertyTrustIncPropertiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_MortgageLoanOnOneParkCenterMember" name="MortgageLoanOnOneParkCenterMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PresidioPropertyTrustIncNotesPayableMember" name="PresidioPropertyTrustIncNotesPayableMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ModelHomeProperiesNotesPayableMember" name="ModelHomeProperiesNotesPayableMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_EconomicInjuryDisasterLoanMember" name="EconomicInjuryDisasterLoanMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PromissoryNoteForRefinancingOneModelHomeMember" name="PromissoryNoteForRefinancingOneModelHomeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_MajorityOwnedSubsidiaryDuboseModelHomeMember" name="MajorityOwnedSubsidiaryDuboseModelHomeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_CDTTWWarrantsMember" name="CDTTWWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ReverseStockSplitMember" name="ReverseStockSplitMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_UnderwrittenPublicOfferingMember" name="UnderwrittenPublicOfferingMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_TheBenchmarkCompanyLLCMember" name="TheBenchmarkCompanyLLCMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2024H2DividendsMember" name="O2024H2DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_MrHeilbronMember" name="MrHeilbronMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_JackKHeilbronAndGaryMKatzMember" name="JackKHeilbronAndGaryMKatzMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RegisteredDirectOfferingMember" name="RegisteredDirectOfferingMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PreFundedWarrantsMember" name="PreFundedWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ClassACommonStockAndAccompanyingPreFundedWarrantsMember" name="ClassACommonStockAndAccompanyingPreFundedWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_CommonStockWarrantsAndPlacementAgentWarrantsMember" name="CommonStockWarrantsAndPlacementAgentWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_CEOAndCIOMember" name="CEOAndCIOMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_FixedPriceSelfTenderOfferMember" name="FixedPriceSelfTenderOfferMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2026M1DividendsMember" name="O2026M1DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M1DividendsMember" name="O2025M1DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2026M2DividendsMember" name="O2026M2DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M2DividendsMember" name="O2025M2DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2026M3DividendsMember" name="O2026M3DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M3DividendsMember" name="O2025M3DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M4DividendsMember" name="O2025M4DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M5DividendsMember" name="O2025M5DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M6DividendsMember" name="O2025M6DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M7DividendsMember" name="O2025M7DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M8DividendsMember" name="O2025M8DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M9DividendsMember" name="O2025M9DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M10DividendsMember" name="O2025M10DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M11DividendsMember" name="O2025M11DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_O2025M12DividendsMember" name="O2025M12DividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_TwoThousandSeventeenIncentiveAwardPlanMember" name="TwoThousandSeventeenIncentiveAwardPlanMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NonvestedResctrictedStockMember" name="NonvestedResctrictedStockMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PayrollReimbursementMember" name="PayrollReimbursementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_FormerOfficerAndDirectorMember" name="FormerOfficerAndDirectorMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ConsultingServicesMember" name="ConsultingServicesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_CapitalPaymentReturnsMember" name="CapitalPaymentReturnsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_InvestmentInDMH207Member" name="InvestmentInDMH207Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_InvestmentsDMH207Member" name="InvestmentsDMH207Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ConsultingServicesAndCapitalPaymentReturnsMember" name="ConsultingServicesAndCapitalPaymentReturnsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_InvestmentsInDmh207Member" name="InvestmentsInDmh207Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_BoardOfDirectorMember" name="BoardOfDirectorMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StocksRepurchaseMember" name="StocksRepurchaseMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DebtOriginBankMember" name="DebtOriginBankMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ModelHomesDMHLP207Member" name="ModelHomesDMHLP207Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PromissoryNoteMember" name="PromissoryNoteMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_BancorpBankMember" name="BancorpBankMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_CommercialPropertyHeldForSaleMember" name="CommercialPropertyHeldForSaleMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ModelHomePropertyHeldForSaleMember" name="ModelHomePropertyHeldForSaleMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PropertyHeldForSaleMember" name="PropertyHeldForSaleMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ModelHomesMember" name="ModelHomesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_OtherStateTaxAuthoritiesMember" name="OtherStateTaxAuthoritiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_FiniteLivedIntangibleAssetsNetOfAmountsIncludedInRealEstateAssetsHeldForSale" name="FiniteLivedIntangibleAssetsNetOfAmountsIncludedInRealEstateAssetsHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RealEstateInvestmentPropertyAndLeaseIntangiblesHeldForInvestmentAtCost" name="RealEstateInvestmentPropertyAndLeaseIntangiblesHeldForInvestmentAtCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RealEstateInvestmentPropertyAndLeaseIntangiblesAccumulatedDepreciationAndAmortization" name="RealEstateInvestmentPropertyAndLeaseIntangiblesAccumulatedDepreciationAndAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RealEstateInvestmentPropertyAndLeaseIntangiblesHeldForInvestmentNet" name="RealEstateInvestmentPropertyAndLeaseIntangiblesHeldForInvestmentNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RealEstateInvestmentPropertyAndLeaseIntangiblesHeldforinvestmentAndRealEstateHeldForSaleNet" name="RealEstateInvestmentPropertyAndLeaseIntangiblesHeldforinvestmentAndRealEstateHeldForSaleNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_MortgageNotesPayableRelatedToRealEstateAssetsHeldForInvestmentNet" name="MortgageNotesPayableRelatedToRealEstateAssetsHeldForInvestmentNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_MortgageNotesPayableRelatedToPropertiesHeldForSaleNet" name="MortgageNotesPayableRelatedToPropertiesHeldForSaleNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_MortgageNotesPayableNet" name="MortgageNotesPayableNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_AccruedRealEstateTaxes" name="AccruedRealEstateTaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_FeeAndOtherIncome" name="FeeAndOtherIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ImpairmentOfGoodwillAndRealEstateAssets" name="ImpairmentOfGoodwillAndRealEstateAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NonoperatingInterestAndOtherIncomeExpense" name="NonoperatingInterestAndOtherIncomeExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_GainLossOnDispositionOfAssetsNet" name="GainLossOnDispositionOfAssetsNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PreferredStockDividendsInArrearsIncomeStatementImpact" name="PreferredStockDividendsInArrearsIncomeStatementImpact" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DividendsPreferredStockStockholders" name="DividendsPreferredStockStockholders" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockIssuedDuringPeriodValueRestrictedStockAwardVesting" name="StockIssuedDuringPeriodValueRestrictedStockAwardVesting" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockbasedCompensationReturningDuringPeriodValue" name="StockbasedCompensationReturningDuringPeriodValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockbasedCompensationReturningDuringPeriodShares" name="StockbasedCompensationReturningDuringPeriodShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockRepurchasedAndRetiredDuringPeriodTenderOfferValue" name="StockRepurchasedAndRetiredDuringPeriodTenderOfferValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockRepurchasedAndRetiredDuringPeriodTenderOfferShares" name="StockRepurchasedAndRetiredDuringPeriodTenderOfferShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockIssuedDuringPeriodValueReverseStockSplits" name="StockIssuedDuringPeriodValueReverseStockSplits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NetLossInFairValueMarketableSecurities" name="NetLossInFairValueMarketableSecurities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NetGainLossInFairValueMarketableSecurities" name="NetGainLossInFairValueMarketableSecurities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_SharebasedCompensationBonuses" name="SharebasedCompensationBonuses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_IncreaseDecreaseInDeferredLeasingCosts" name="IncreaseDecreaseInDeferredLeasingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ChangeAccruedRealEstateTaxes" name="ChangeAccruedRealEstateTaxes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ProceedsFromIssuanceOfMortgageNotesPayable" name="ProceedsFromIssuanceOfMortgageNotesPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RepaymentsOfSecuredNotesPayable" name="RepaymentsOfSecuredNotesPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PaymentOfDeferredOfferingCosts" name="PaymentOfDeferredOfferingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NoncashInvestingItemsAbstract" name="NoncashInvestingItemsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PriorYearPaidAdditionsToBuildingAndTenantImprovements" name="PriorYearPaidAdditionsToBuildingAndTenantImprovements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DeferredOfferingCostsPaidFromPriorYear" name="DeferredOfferingCostsPaidFromPriorYear" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NoncashInvestingItemsPrivateWarrants" name="NoncashInvestingItemsPrivateWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NoncashFinancingItemsAbstract" name="NoncashFinancingItemsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DividendsPayablePreferredStock" name="DividendsPayablePreferredStock" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PaymentsOfAccruedBonusThroughInvestmentSharesOwned" name="PaymentsOfAccruedBonusThroughInvestmentSharesOwned" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_InvestmentOwnedSharesDistribution" name="InvestmentOwnedSharesDistribution" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DisclosureRealEstateAssetsAbstract" name="DisclosureRealEstateAssetsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RealEstateAssetsTextBlock" name="RealEstateAssetsTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DeferredLeasingCostsPolicyTextBlock" name="DeferredLeasingCostsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_OtherNonRealEstateAssetsAndLiabilitiesTableTextBlock" name="OtherNonRealEstateAssetsAndLiabilitiesTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ScheduleOfSegmentReportingInformationNetOperatingIncomeBySegmentTableTextBlock" name="ScheduleOfSegmentReportingInformationNetOperatingIncomeBySegmentTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ScheduleOfIncomeTaxesPaidTableTextBlock" name="ScheduleOfIncomeTaxesPaidTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ScheduleOrganizationAndBasisOfPresentationAbstract" name="ScheduleOrganizationAndBasisOfPresentationAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ScheduleOrganizationAndBasisOfPresentationTable" name="ScheduleOrganizationAndBasisOfPresentationTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SQFT_NumberOfLimitedLiabilityCompanies" name="NumberOfLimitedLiabilityCompanies" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NumberOfLimitedPartnershipsInWhichCompanyIsSoleGeneralPartner" name="NumberOfLimitedPartnershipsInWhichCompanyIsSoleGeneralPartner" nillable="true" xbrli:periodType="duration" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NumberOfTenants" name="NumberOfTenants" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NumberOfHomeBuilders" name="NumberOfHomeBuilders" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RealEstateFairValueDisclosure" name="RealEstateFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RealEstateImpairmentLoss" name="RealEstateImpairmentLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NumberOfPropertiesClassifiedAsHeldForSale" name="NumberOfPropertiesClassifiedAsHeldForSale" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PercentageOfDistributedTaxableIncomeToQualifyAsREIT" name="PercentageOfDistributedTaxableIncomeToQualifyAsREIT" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_EstimatedFutureOperatingLossCarryforwards" name="EstimatedFutureOperatingLossCarryforwards" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_LockupAgreementShares" name="LockupAgreementShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_WarrantOrRightExercisablePeriod" name="WarrantOrRightExercisablePeriod" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RealEstatePropertyConsiderationTransferredTotal" name="RealEstatePropertyConsiderationTransferredTotal" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ScheduleOfRealEstateAssetsAbstract" name="ScheduleOfRealEstateAssetsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ScheduleOfRealEstateAssetsTable" name="ScheduleOfRealEstateAssetsTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SQFT_NumberOfStatesRealEstatePropertyIsLocated" name="NumberOfStatesRealEstatePropertyIsLocated" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ScheduleOfRealEstatePropertiesTableTextBlockAbstract" name="ScheduleOfRealEstatePropertiesTableTextBlockAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ScheduleOfRealEstatePropertiesTableTextBlockTable" name="ScheduleOfRealEstatePropertiesTableTextBlockTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SQFT_GeographicLocationOfProperty" name="GeographicLocationOfProperty" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RealEstateInvestmentPropertyAndLeaseIntangiblesNet" name="RealEstateInvestmentPropertyAndLeaseIntangiblesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PercentageOwnershipInProperty" name="PercentageOwnershipInProperty" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PercentageBeneficialOwnershipInProperty" name="PercentageBeneficialOwnershipInProperty" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockIssuedInExchangeForOwnershipPercentage" name="StockIssuedInExchangeForOwnershipPercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RealEstatePurchaseOfferPrice" name="RealEstatePurchaseOfferPrice" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ScheduleOfLeaseIntangibilesAbstract" name="ScheduleOfLeaseIntangibilesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ScheduleOfLeaseIntangibilesTable" name="ScheduleOfLeaseIntangibilesTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SQFT_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearTwo" name="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NotesPayableIncludingUnamortizedCost" name="NotesPayableIncludingUnamortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DebtInstrumentCovenantMinimumFixedChargeCoverageRatio" name="DebtInstrumentCovenantMinimumFixedChargeCoverageRatio" nillable="true" xbrli:periodType="instant" type="xbrli:pureItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DebtInstrumentCovenantMaximumFixedChargeCoverageRatio" name="DebtInstrumentCovenantMaximumFixedChargeCoverageRatio" nillable="true" xbrli:periodType="instant" type="xbrli:pureItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_InvestmentsAllOtherInvestmentsTable" name="InvestmentsAllOtherInvestmentsTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SQFT_InvestmentOwnedFractionSharePayout" name="InvestmentOwnedFractionSharePayout" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_EquityTable" name="EquityTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SQFT_OptionToPurchaseAdditionalSharesPeriod" name="OptionToPurchaseAdditionalSharesPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_EquityOfferingUnderwritingDiscountPercentage" name="EquityOfferingUnderwritingDiscountPercentage" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ProceedsFromIssuanceOfPreferredStockAndPreferenceStockGross" name="ProceedsFromIssuanceOfPreferredStockAndPreferenceStockGross" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PreferredStockNumberOfBoardOfDirectorsEntitledToVoteIfDividendsNotPaidFor18MonthlyDividendPeriods" name="PreferredStockNumberOfBoardOfDirectorsEntitledToVoteIfDividendsNotPaidFor18MonthlyDividendPeriods" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PreferredStockPercentageOfOutstandingSharesRequiredToAuthorizeSeniorRankingStock" name="PreferredStockPercentageOfOutstandingSharesRequiredToAuthorizeSeniorRankingStock" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_MaximumIndividualCommonStockOwnershipPercentage" name="MaximumIndividualCommonStockOwnershipPercentage" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_CommonStockNumberOfEntitledVotes" name="CommonStockNumberOfEntitledVotes" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_MaximumExceptedIndividualCommonStockBeneficiallyOrConstructivelyOwnershipPercentage" name="MaximumExceptedIndividualCommonStockBeneficiallyOrConstructivelyOwnershipPercentage" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ProceedsFromIssuanceOrSaleOfEquityGross" name="ProceedsFromIssuanceOrSaleOfEquityGross" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockAndWarrantsCombinedOfferingPrice" name="StockAndWarrantsCombinedOfferingPrice" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_ClassOfWarrantOrRightExercisedDuringPeriod" name="ClassOfWarrantOrRightExercisedDuringPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockRepurchasedAverageCostPerShare" name="StockRepurchasedAverageCostPerShare" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockRepurchasedAcquiredCommissionPerShare" name="StockRepurchasedAcquiredCommissionPerShare" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockRepurchaseProgramIncreaseInSharesAcceptedPercent" name="StockRepurchaseProgramIncreaseInSharesAcceptedPercent" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockRepurchaseProgramIncreaseInSharesAcceptedShares" name="StockRepurchaseProgramIncreaseInSharesAcceptedShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockRepurchasedDuringPeriodPricePerShare" name="StockRepurchasedDuringPeriodPricePerShare" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_StockRepurchaseProgramOddLotShares" name="StockRepurchaseProgramOddLotShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustedForReverseStockSplit" name="SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustedForReverseStockSplit" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_OtherIncomeExpenseAbstract" name="OtherIncomeExpenseAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_OtherIncomeExpenseNetOfTax" name="OtherIncomeExpenseNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RecoveryRevenue" name="RecoveryRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_AdjustedOperatingIncomeLoss" name="AdjustedOperatingIncomeLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_OtherAssetsReportableSegments" name="OtherAssetsReportableSegments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PaymentsForTenantImprovement" name="PaymentsForTenantImprovement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PaymentsToAcquireRealEstates" name="PaymentsToAcquireRealEstates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_RealEstateAcquisitionsAndImprovements" name="RealEstateAcquisitionsAndImprovements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DisposalGroupIncludingDiscontinuedOperationDeferredLeasingCosts" name="DisposalGroupIncludingDiscontinuedOperationDeferredLeasingCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DisposalGroupIncludingDiscontinuedOperationAccruedRealEstateTaxes" name="DisposalGroupIncludingDiscontinuedOperationAccruedRealEstateTaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_LesseeLeaseTable" name="LesseeLeaseTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SQFT_EffectiveIncomeTaxRateReconciliationRerateOfStateDeferred" name="EffectiveIncomeTaxRateReconciliationRerateOfStateDeferred" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_EffectiveIncomeTaxRateReconciliationRerateOfStateDeferredPercent" name="EffectiveIncomeTaxRateReconciliationRerateOfStateDeferredPercent" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_EffectiveIncomeTaxRateReconciliationMinimumReitStateAndLocalTaxAmount" name="EffectiveIncomeTaxRateReconciliationMinimumReitStateAndLocalTaxAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_EffectiveIncomeTaxRateReconciliationMinimumReitStateAndLocalTaxPercent" name="EffectiveIncomeTaxRateReconciliationMinimumReitStateAndLocalTaxPercent" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosse" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosse" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_EffectiveIncomeTaxRateReconciliationPartnershipTrueUpAmount" name="EffectiveIncomeTaxRateReconciliationPartnershipTrueUpAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_EffectiveIncomeTaxRateReconciliationPartnershipTrueUpPercentage" name="EffectiveIncomeTaxRateReconciliationPartnershipTrueUpPercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_EffectiveIncomeTaxRateContinuingOperation" name="EffectiveIncomeTaxRateContinuingOperation" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DeferredTaxLiabilitiesStateTaxes" name="DeferredTaxLiabilitiesStateTaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DeferredTaxAssetsLiabilitiesGross" name="DeferredTaxAssetsLiabilitiesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NameOfPropertyAxis" name="NameOfPropertyAxis" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" />
    <element id="SQFT_NameOfPropertyDomain" name="NameOfPropertyDomain" abstract="true" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_DebtInstrumentFloorInterestRateDecrease" name="DebtInstrumentFloorInterestRateDecrease" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_LiquidAssets" name="LiquidAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_PreferredStockYearlyCashSavingsFromDividendsSuspension" name="PreferredStockYearlyCashSavingsFromDividendsSuspension" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NumberOfPubliclyTradedREITSsInWhichCommonSharesAreOwned" name="NumberOfPubliclyTradedREITSsInWhichCommonSharesAreOwned" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SQFT_NumberOfPubliclyTradedREITsInWhichOptionsAreOwned" name="NumberOfPubliclyTradedREITsInWhichOptionsAreOwned" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
</schema>
