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        <Desc>Website costs</Desc>
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      <FootnoteTextInd>X</FootnoteTextInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt X, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>FIN 48 FOOTNOTE</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt X, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization regularly reviews and evaluates its tax positions taken in previously filed information returns and as reflected in its financial statements, with regard to issues affecting its tax exempt status, unrelated business income, and related matters. The Organization believes that in the event of an examination by taxing authorities, the Organizations positions would prevail based upon the technical merits of such positions. Therefore, the Organization has concluded that no tax benefits or liabilities are required to be recognized.</ExplanationTxt>
      </SupplementalInformationDetail>
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    <IRS990ScheduleO documentId="IRS990ScheduleO-01" softwareId="24020153">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt III, Line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>CONTRACTED SERVICES</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization has continued to contract with Your Part-Time Controller for its internal accounting services.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>The organization has one class of members. Members may participate in the organizations governance, but do not receive distributions of income or assets from the organization.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS VOTING RIGHTS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 8b</FormAndLineReferenceDesc>
        <ExplanationTxt>Each member is entitled to one vote in the election of the board of directors. Members are also permitted to vote on any proposed changes to the organizations by-laws affecting member roles. Members do not vote on the day to day business matters of the organization.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS GOVERNANCE DECISIONS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>GBU by-laws allow the Board to appoint up to 1/3 of its directors, with the remaining 2/3 being elected by the members.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 8b</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 8b</FormAndLineReferenceDesc>
        <ExplanationTxt>AUTHORIZED COMMITTEE</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 8b</FormAndLineReferenceDesc>
        <ExplanationTxt>The Executive Committee is authorized to act on behalf of the Board. Minutes are kept of those meetings.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>The finance committee reviews the Form 990 in detail with the preparer and provides any needed detail or explanation to the Board. The Board receives a copy via email and then has the opportunity to comment on it before the Form 990 is filed. Once ratified by the Board and submitted, the Form 990 is provided to anyone who would like to see it upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>CONFLICT OF INTEREST POLICY</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>Board members are given a copy of the conflict of interest policy annually and it is explained in detail. Board members sign conflict of interest forms each year.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 15a</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 15a</FormAndLineReferenceDesc>
        <ExplanationTxt>DETERMINATION OF COMPENSATION</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 15b</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 15b</FormAndLineReferenceDesc>
        <ExplanationTxt>For the hiring of the executive director, the comparability analysis and deliberation is done by a committee of board members, who report to the Board, where the hiring decision is made. Any salary increases in subsequent years are based on cost-of-living adjustments within the budget proposed by the finance committee and approved by the board, and on merit adjustments based on the successful achievement of the executive directors annual goals. The pay rate and salary increases for any other officers or key employees are similarly set through the budget process of the finance committee and approved by the board.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>AVAILABILITY OF POLICIES, DOCUMENTS &amp; STATEMENTS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization makes its financial statements and necessary policies and governing documents available upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt XII, Line 2c</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt XII, Line 2c</FormAndLineReferenceDesc>
        <ExplanationTxt>FINANCIAL OVERSIGHT</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt XII, Line 2c</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organizations finance committee oversees financial statements and selection of an independent auditor.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>PART III, LINE 4 - PROGRAM ACCOMPLISHMENTS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>Description of Green Building UnitedS 2023 Program Services</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>As the regions leading green building organization, Green Building United, promotes the development of buildings that are sustainable, healthy for inhabitants, resilient, and cost effective. Through education, advocacy, and strategic initiatives Green Building United informs and engages individuals and organizations to transform the way buildings and communities are designed, built, and operated.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>Green Building Education</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>Green Building United provides trainings and educational events focused on cutting edge green building standards and practices. In 2023, Green Building United continued to deliver education programs around the LEED green building standard and other rating systems including Passive House, Living Building Challenge, WELL, and Fitwel. Green Building United produced two major in-person events in 2023: The Sustainability Symposium, a one day-long educational conference and the Groundbreaker Awards, honoring exemplary projects and leaders in the industry. Green Building United also held the New Gravity Housing Conference (virtual), a half-day educational conference. Additionally, Green Building United provided numerous smaller educational opportunities on topics ranging from from multi-family housing retrofits to C-PACE financing.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>Policy and Advocacy</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>Green Building United serves as a technical resource for elected officials and government administrators through participation on committees by providing updates to its members on current legislative issues. In 2023, Green Building United participated on committees to provide technical expertise on housing and energy programs in Philadelphia, new building requirements in Delaware, and ongoing educational programs around energy codes, building efficiency, and other issues impacting the green building sector.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>Strategic Initiatives</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>. Green Building United led the following strategic initiatives in 2022 to promote and engage the region in the organizations priority policy issue areas:</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>. Green Building United managed the Philadelphia 2030 District, an initiative to address climate change by reducing energy, transportation, and water emmissions at a district scale. Green Building United continued to convene 2030 District participants while adding several new properties representing multi-family condo owners.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>support to participating building owners to make change and measure results.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>. Delaware Pathways to Green Schools Program provides grants, one-on-one support, and expert resources to K-12 schools in Delaware that are committed to becoming healthier, more sustainable, and more energy efficient. The program</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>engages students, teachers and building operators to reduce energy consumption and pursue other sustainability measures.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>. Green Building United partnered with the City of Philadelphia Office of Sustainability to assist large buildings with compliance with the Citys benchmarking and building energy performance program.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>. Green Building United partners with the Sierra Club of Pennsylvania to lead the Housing Equity Repairs and Electrification for Climate Justice (HERE4CJ) Coalition to explore the opportunities and barriers for healthy home repairs and equitable electrification in Philadelphia.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>PART VII, LINE 9D - REPORTABLE COMPENSATION</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>Amy Cornelius and Stasia Monteiro were compensated for work done as a consultant related to one of the organizations program grants.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>AMY CORNELIUS 34063. 34063. 0. 0.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>MYTH PARTNERS 17000. 17000. 0. 0.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>PHILLY TEMPS &amp; PERM 40987. 40987. 0. 0.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>A-PLAN COACHING 11000. 0. 11000. 0.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>REVISION ARCHITECTURE 9835. 9835. 0. 0.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>PRACTICAL ENERGY SOLUTIONS 34481. 34481. 0. 0.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>NATIONAL WILDLIFE FEDERATION 10000. 10000. 0. 0.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>INSTITUTE FOR MARKET TRANSFORMATION 27660. 26660. 1000. 0.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>STASIA MONTEIRO 3000. 3000. 0. 0.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHERS 21081. 19220. 1861. 0.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>