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        <TotalAmt>0</TotalAmt>
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      <SubstantialContributorsAmtGrp>
        <TotalAmt>0</TotalAmt>
      </SubstantialContributorsAmtGrp>
      <SubstAndDsqlfyPrsnsTotGrp>
        <TotalAmt>0</TotalAmt>
      </SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>380818</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>0</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>0</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>0</CurrentTaxYearAmt>
      </GrossInvestmentIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus1YearAmt>116461</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>264357</CurrentTaxYearAmt>
        <TotalAmt>380818</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>1.00000</PublicSupportCY509Pct>
      <InvestmentIncomeCYPct>0.00000</InvestmentIncomeCYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleC documentId="RetDoc1039700001">
      <SubstantiallyAllDuesNondedInd>1</SubstantiallyAllDuesNondedInd>
      <OnlyInHouseLobbyingInd>1</OnlyInHouseLobbyingInd>
      <AgreeCarryoverPriorYearInd>0</AgreeCarryoverPriorYearInd>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <OtherAssetsOrgGrp>
        <Desc>MEETING DEPOSIT</Desc>
        <BookValueAmt>2000</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>ACCOUNTS RECEIVABLE</Desc>
        <BookValueAmt>15500</BookValueAmt>
      </OtherAssetsOrgGrp>
      <TotalBookValueOtherAssetsAmt>17500</TotalBookValueOtherAssetsAmt>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="RetDoc1041200001">
      <SpecialFundraisingEventsInd>X</SpecialFundraisingEventsInd>
      <AgrmtProfFundraisingActyInd>0</AgrmtProfFundraisingActyInd>
      <FundraisingEventInformationGrp>
        <Event1Nm>Golf Outing</Event1Nm>
        <GrossReceiptsEvent1Amt>19960</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>19960</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>37980</OtherDirectExpensesEvent1Amt>
        <GrossReceiptsTotalAmt>19960</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>19960</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>37980</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>37980</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>-18020</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
      <IndividualWithBooksNm>Terry Steveson</IndividualWithBooksNm>
      <PersonsWithBooksUSAddress>
        <AddressLine1Txt>3030 Warrenville Road</AddressLine1Txt>
        <CityNm>Lisle</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>605323663</ZIPCd>
      </PersonsWithBooksUSAddress>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>Milan, Italy The Real Estate Center (REC) of Politecnico di Milano is set to host the International Real Estate Challenge (IREC 2025) at its Campus Leonardo, thanks to the generous support of the SIOR Foundation, Colliers Italia, and under the patronage of RICS Europe (Royal Institution of Chartered Surveyors). This international real estate business competition will take place on Friday, January 17, 2025, showcasing the brightest young talents in the field. Organized by REC as part of the Master REM XXVIII ed. of the ABC Department of Politecnico di Milano, IREC 2025 brings together over 50 students from eight leading universities across Europe, including: Ankara University Czech Technical University Odisee University of Applied Sciences Technological University Dublin Sheffield Hallam University Slovak University of Technology Universitat Politcnica de Valncia Participants, divided into diverse international teams, will tackle a real-world business case: selecting the best location and building for a company's new European headquarters. Competing cities include Ankara, Barcelona, Bratislava, Brussels, Dublin, Istanbul, London, Milan, Prague, and Valencia. Highlighting the Event's Impact</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>The SIOR supports programs for students interested in pursuing careers in commercial real estate, including global and chapter-level scholarships, educational programming, and mentoring.SIOR Foundation Announces 2024 Mildred C. Hanson, SIOR Memorial Scholarship Winners The SIOR Foundation is pleased to announce the recipients of the prestigious 2024 Mildred C. Hanson, SIOR Memorial Scholarships, awarded annually to outstanding students pursuing careers in commercial real estate. This year, the selection committee faced the challenging task of choosing winners from among 25 exceptional applicants, each demonstrating significant promise and commitment to the real estate profession. The graduate-level scholarship recipient is Natalie Bongirno, who is pursuing her Master's in Finance with a specialization in Real Estate at The Ohio State University's Fisher College of Business. Natalie has distinguished herself through academic excellence, passion for the field, and clear vision for her future in real estate. The undergraduate scholarship has been awarded to Katelynn Wiseman, currently a junior working toward her Bachelor of Science in Real Estate at New York University's School of Professional Studies, Schack Institute of Real Estate. Katelynn's commitment to her studies and proactive involvement in real estate initiatives showcase her potential as a future leader in the industry. Each student has been awarded an $8,000 scholarship to support their continuing education in real estate. The SIOR Foundation is proud to invest in the next generation of commercial real estate leaders and congratulates Natalie and Katelynn on their outstanding achievements. For additional details or to arrange interviews with the scholarship recipients, please contact the SIOR Foundation.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>ACTIVE MEMBERS - INDUSTRIAL, OFFICE, DUAL, EXECUTIVE, MANAGER OR ADVISORY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>ACTIVE AND ASSOCIATE MEMBERS ELECT THE BOARD OF DIRECTORS AND OFFICERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>Society of Industrial &amp; Office Realtors, Inc reviews the Form 990 with the Treasurer and President for accuracy and completeness. Once approved, the Governing body is provided with a copy of Form 990 upon request. Requests must be made in writing and must be submitted to the above address.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>Read at every meeting</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 18</FormAndLineReferenceDesc>
        <ExplanationTxt>Society of Industrial &amp; Office Realtors, Inc has the Governing Documents, Conflicts of Interest Policies, Financial Statements, and Returns of Exempt Income Tax returns of Form 990 are available to the public upon request. Requests must be made in writing and must be submitted to the above address.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>Society of Industrial &amp; Office Realtors, Inc has the all Governing Documents, Conflicts of Interest Policies, Financial Statements, and Returns of Exempt Income Tax returns of Form 990 are available to the public upon request. Requests must be made in writing and must be submitted to the above address.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>Managment Fees: Program service expenses 0. Management and general expenses 40,000. Fundraising expenses 0. Total expenses 40,000.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>