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      <ForeignCorpOwnershipInd>true</ForeignCorpOwnershipInd>
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      <ForeignPartnershipInd>false</ForeignPartnershipInd>
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        <FormAndLineReferenceDesc>Schedule F, Part I, Line 2 Procedures for monitoring use of grant funds</FormAndLineReferenceDesc>
        <ExplanationTxt>The internal control procedures for each of the offices abroad include monthly monitoring, review and input to the overall headquarters financial accounts by the staff accountant at headquarters and overseen by the VP of Finance &amp; Administration. Every request for funds to be sent to the Venice or China Office is substantiated and approved by the Chief Executive Officer's personal review and sign off.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule F, Part I, Line 3 Method used to account for expenditures on org's financial statements</FormAndLineReferenceDesc>
        <ExplanationTxt>EAST ASIA AND THE PACIFIC-Accrual; EUROPE (INCLUDING ICELAND AND GREENLAND)-Accrual</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule F, Part III Method used to account for expenditures on org's financial statements</FormAndLineReferenceDesc>
        <ExplanationTxt>EAST ASIA AND THE PACIFIC -Accrual</ExplanationTxt>
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          <BusinessNameLine1Txt>Francisco Javier Quintana de Una</BusinessNameLine1Txt>
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        <TitleTxt>Chief Executive Officer</TitleTxt>
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        <BusinessName>
          <BusinessNameLine1Txt>Antony D Wood</BusinessNameLine1Txt>
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        <FormAndLineReferenceDesc>Schedule J, Part I, Line 5a Compensation contingent on revenues of the organization</FormAndLineReferenceDesc>
        <ExplanationTxt>Consistent with the President's employment contract, the organization paid to the President additional compensation at a rate of 5% contingent upon new revenue brought to the organization.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 7 Non-fixed payments</FormAndLineReferenceDesc>
        <ExplanationTxt>The board approved nonfixed payments made in the form discretionary bonuses.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part II Part VII, Line 5</FormAndLineReferenceDesc>
        <ExplanationTxt>Antony D. Wood, President, received compensation and benefits from Illinois Institute of Technology (IIT) for services provided to IIT as part of a joint academic appointment in his role as President of CTBUH, the filing organization. Total reportable compensation for Antony was $270,003 and non-taxable benefits was $29,604 as reported on his 2022 IIT Form W-2. Of this amount, CTBUH is responsible for $261,388 and the amount paid directly by IIT is $38,219 under the joint agreement.</ExplanationTxt>
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          <BusinessName>
            <BusinessNameLine1Txt>Tansri Muliani Wood</BusinessNameLine1Txt>
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        <RelationshipDescriptionTxt>Family member of Antony D. Wood, President</RelationshipDescriptionTxt>
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        <TransactionDesc>Compensation and benefits</TransactionDesc>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d Description of other program services</FormAndLineReferenceDesc>
        <ExplanationTxt>(Expenses $ 447,149 including grants of $)(Revenue $ 123,780) Through the publication of books, proceedings, technical guides, research reports, and a monthly newsletter, CTBUH disseminates multidisciplinary information on all aspects of tall buildings and sustainable urban environments.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d Description of other program services</FormAndLineReferenceDesc>
        <ExplanationTxt>(Expenses $ 359,421 including grants of $) CTBUH developed the international standards for measuring and defining tall buildings, as outlined on its website, and is recognized as the arbiter for bestowing designations such as the "World's Tallest Building." These standards also inform the basis of the CTBUH Tall Building Database, the world's premier online resource for accurate, reliable information on tall building data. The CTBUH website provides the public with detailed data, images, and technical information on more than 40,000 tall buildings, and their cities, the world over.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d Description of other program services</FormAndLineReferenceDesc>
        <ExplanationTxt>(Expenses $ 161,850 including grants of $ 18,750) CTBUH offers annual competitions for professionals and students to engage in design and research projects. The evaluation of competition proposals and designs are undertaken by an expert peer review committee, which reflects a multi-disciplinary group of tall building/urban experts from around the world with experience in varying fields.The Masters of Tall Buildings and Vertical Urbanism (M.TBVU) program is a collaboration between CTBUH and the Illinois Institute of Technology (IIT), and is the world's first multidisciplinary advanced degree focused specifically on the high-rise and the role of urban density in future cities.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part V, Line 2a</FormAndLineReferenceDesc>
        <ExplanationTxt>Council on Tall Buildings and Urban Habitat (CTBUH) does not file any W-2s as all payroll, benefits, and payroll tax returns administered through a contracted professional employment organization (PEO). The number of CTBUH employees reported on this line represents the number for which CTBUH reimburses the PEO for all salaries, benefits, payroll taxes, employer costs and added fees. All reimbursed staff expenses are reported on 990 Part VII, Section A and 990 Part IX, Lines 5 - 10.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 1a Delegate broad authority to a committee</FormAndLineReferenceDesc>
        <ExplanationTxt>Section 1. The Executive Committee shall consist of members, all of whom shall be voting Trustees, except for the Executive Director, who shall be ex-officio with the power to vote and who shall be counted as part of a quorum for the purpose of transacting business. The Chair, Vice Chair, Executive Director, Secretary and Treasurer of the Board of Trustees shall be members of the Executive Committee. The purpose of the Executive Committee shall be to act on behalf of the Board of Trustees between regularly scheduled meetings of the Board of Trustees where in the business judgment of the Executive Committee an emergency exists, or there is insufficient time to call a special meeting of the Board of Trustees as provided for in these Bylaws, or the Board of Trustees has delegated to the Executive Committee the authority to act on its behalf; assist the Chair and the Executive Director with their responsibilities to enable the Board of Trustees to function effectively and efficiently, i.e. oversee the work of Board Committees and the Council's planning process and progress on achieving planning goals; and to develop a process to evaluate the performance of the Executive Director. Unless the Board of Trustees delegates to the Executive Committee the authority to act on its behalf, the following items are reserved for action by the Board of Trustees: selection, termination, compensation and evaluation (provided the evaluation of the Executive Director's performance will be subject to the provisions of the Executive Director's employment contract) of the Executive Director; selection of corporate legal counsel for the Council; Trustee and Board Officer election and removal; changes in institutional mission, goals and philosophy; amendments to the articles of incorporation; incurring of corporate indebtedness; sale of Council assets or tangible property; and adoption of the annual budget. Without limitation, the following powers are specifically not delegated to the Executive Committee and are reserved for the Board of Trustees: (a) amending or repealing these Bylaws or the Articles of Incorporation; (b) electing, appointing, or removing any Officer, Trustee, or member of any committee, or fixing the compensation of any member of a committee; (c) adopting a plan of merger or adopting a plan of consolidation with another corporation; (d) authorizing the sale, lease, exchange, or mortgage of all or substantially all of the property or assets of the Corporation; (e) filling vacancies on the Board of Trustees or any of its committees; (f) adopting a plan for the distribution of the assets of the Corporation or for dissolution; or (g) amending, altering, repealing, or taking any action inconsistent with any resolution or action of the Board of Trustees which by its terms provides that it shall not be amended, altered, or repealed by any such committee. Section 3. The Executive Committee shall meet as often as is necessary to conduct its business as the Chair determines. A majority of voting Trustee Executive Committee members shall constitute a quorum.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 6 Classes of members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>Any person interested in the objectives of the Council, as set forth in its articles of incorporation, shall be eligible to become a member of the Council and to serve in any of its offices or on its Executive Committee or any of its Committees. The Membership shall consist of honorary members and varying categories of regular members, including: (1) Executive Members (consisting entirely of those members who currently serve on the Board of Trustees); and (2) General Members. Any person who is eligible may apply for regular membership, it being understood that the Board of Trustees may not accept any application if, in its sole judgment, the objectives of the Council will not be served by such membership.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b Review of form 990 by governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>Form 990 is prepared by an independent CPA firm and reviewed in detail by the organization's top management. The reviewed Form 990 is then provided to the board of directors prior to filing with the IRS.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c Conflict of interest policy</FormAndLineReferenceDesc>
        <ExplanationTxt>A trustee shall be considered to have a conflict of interest if a trustee (1) has existing or potential financial or other interests that impair or appear to impair the trustee's independent, unbiased judgement in the discharge of his or her responsibilities to CTBUH or (2) is aware that a member of the trustee's family has a financial or other interests that impair or appear to impair the trustee's independent judgement in the discharge of his or her responsibilities to CTBUH. For purposes of this provision, a family member is defined as a spouse, parent, sibling, child, or any other relative residing in the same household as the trustee. Each trustee shall complete and sign a disclosure form provided annually and reviewed by the Board of Trustees. All trustees shall disclose to the board any possible conflict of interest at the earliest practical time. The trustee shall absent himself or herself from discussions of, and abstain from voting on, such matters under consideration by the Board of Trustees or its committees. The minutes of such meeting shall reflect that a disclosure was made and that the trustee with a conflict or possible conflict abstained from voting. Any trustee who is uncertain as to whether a conflict of interest may exist in any matter may request that the Board or committee resolve the question in his or her absence by majority vote.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a Process to establish compensation of top management official</FormAndLineReferenceDesc>
        <ExplanationTxt>The President's overall compensation is determined and approved by the board of directors; which includes the IIT portion of his salary, contracted with the IIT College of Architecture. The annual compensation review is completed based on individual and company performance variables and comparability data is regularly used in this process. This process is documented in the board minutes and as part of the budget approval process.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15b Process to establish compensation of other employees</FormAndLineReferenceDesc>
        <ExplanationTxt>The compensation for all other officers is determined and approved by the board of directors. The annual compensation review on all officers is completed based on individual and company performance variables and comparability data is regularly used in this process. This process is documented in the board minutes and as part of the budget approval process.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19 Required documents available to the public</FormAndLineReferenceDesc>
        <ExplanationTxt>The governing documents, conflict of interest policy and financial statements are available upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9 Other changes in net assets or fund balances</FormAndLineReferenceDesc>
        <ExplanationTxt>Foreign exchange loss - -4373;</ExplanationTxt>
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          <BusinessNameLine1Txt>CTBUH Business Consulting (Shangai) Co Ltd</BusinessNameLine1Txt>
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