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    <ReturnTs>2026-04-03T23:14:12Z</ReturnTs>
    <TaxPeriodEndDt>2025-12-31</TaxPeriodEndDt>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2025-01-01</TaxPeriodBeginDt>
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      <EIN>825118703</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>INTERNATIONAL INSTITUTE OF BUILDING ENCLOSURE CONSULTANTS INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>INTE</BusinessNameControlTxt>
      <PhoneNum>4152055595</PhoneNum>
      <USAddress>
        <AddressLine1Txt>990 Commercial Street</AddressLine1Txt>
        <CityNm>Palo Alto</CityNm>
        <StateAbbreviationCd>CA</StateAbbreviationCd>
        <ZIPCd>94303</ZIPCd>
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    <BusinessOfficerGrp>
      <PersonNm>David Markman</PersonNm>
      <PersonTitleTxt>Treasurer</PersonTitleTxt>
      <PhoneNum>4152055595</PhoneNum>
      <SignatureDt>2026-03-28</SignatureDt>
    </BusinessOfficerGrp>
    <TaxYr>2025</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
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      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
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      <WebsiteAddressTxt>www.iibec.org</WebsiteAddressTxt>
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      <ContributionsGiftsGrantsEtcAmt>78622</ContributionsGiftsGrantsEtcAmt>
      <TotalRevenueAmt>78622</TotalRevenueAmt>
      <OtherExpensesTotalAmt>45341</OtherExpensesTotalAmt>
      <TotalExpensesAmt>45341</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>33281</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>107564</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>140845</NetAssetsOrFundBalancesEOYAmt>
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      <PrimaryExemptPurposeTxt>Education programs and scholarship funding to explain the practical applications of roofing and waterproofing technology and to train similar professionals.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Technical Dinner June</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>15113</ProgramServiceExpensesAmt>
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      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Technical Dinner March</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>15113</ProgramServiceExpensesAmt>
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      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Technical Dinner September</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>15113</ProgramServiceExpensesAmt>
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      <TotalProgramServiceExpensesAmt>45339</TotalProgramServiceExpensesAmt>
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        <PersonNm referenceDocumentName="CompensationExplanation">David Markman</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
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      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Bill Gillette</PersonNm>
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      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Max Calehuff</PersonNm>
        <TitleTxt>Vice President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
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      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <StatesWhereCopyOfReturnIsFldCd>CA</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>David Markman</PersonNm>
        <USAddress>
          <AddressLine1Txt>2181 Trafalgar Pl</AddressLine1Txt>
          <CityNm>Oakland</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94611</ZIPCd>
        </USAddress>
        <PhoneNum>4152055595</PhoneNum>
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      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd referenceDocumentName="IRS990ScheduleC">false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd referenceDocumentName="IRS990ScheduleC">false</LobbyingActivitiesInd>
      <SchoolOperatingInd referenceDocumentName="IRS990ScheduleE">false</SchoolOperatingInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Bank Charges &amp; Fees -2,138.96 Job Supplies 99.30 Meals &amp; Entertainment 161.86 Other Business Expenses 41,027.45 RCI Foundation Donation 6,120.00 Website Costs 72.00 Total for Expenses $45,341.65</ExplanationTxt>
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