This Act may be cited as the “Affordable Housing Construction Act”.

(a) In general.—Section 42(h)(3)(C)(ii) of the Internal Revenue Code of 1986 is amended—

(1) by striking “$1.75” in subclause (I) and inserting “$9.79”, and

(2) by striking “$2,000,000” in subclause (II) and inserting “$11,340,000”.

(b) Inflation adjustments.—Section 42(h)(3)(H) is amended—

(1) by striking “In the case of a calendar year after 2002, the $2,000,000 and $1.75 amounts in subparagraph (C)” in clause (i) and inserting “In the case of a calendar year after 2025, the $16,542,968 and $9.79 amounts in subparagraph (C)”,

(2) by striking “calendar year 2001” in clause (i)(II) and inserting “calendar year 2024”,

(3) by striking “$2,000,000” in clause (ii)(I) and inserting “$11,340,000”, and

(4) by striking “$1.75” in clause (ii)(II) and inserting “$9.79”.

(c) Effective date.—The amendments made by this section shall apply to calendar years beginning after December 31, 2024.

(a) Increased credit amounts.—

(1) IN GENERAL.—Section 42(d)(5) of the Internal Revenue Code of 1986 is amended by adding at the end the following new subparagraphs:

“(C) INCREASE IN CREDIT FOR PREVAILING WAGE BUILDINGS.—

“(i) IN GENERAL.—In the case of any building which pays applicable laborers at rates not less than the prevailing rates for construction, alteration, or repair of a similar character in the locality in which such facility is located as most recently determined by the Secretary of Labor, in accordance with subchapter IV of chapter 31 of title 40, United States Code, and which is designated by the housing credit agency as requiring the increase in credit under this subparagraph in order for such payments to be financially feasible as part of a qualified low-income housing project—

“(I) in the case of a new building, the eligible basis of such building shall be increased by 50 percent of such basis determined without regard to this subparagraph and subparagraphs (B), (D), (E), (F), and (G), and

“(II) in the case of an existing building, the rehabilitation expenditures taken into account under subsection (e) shall be increased by 50 percent of such expenditures determined without regard to this subparagraph and subparagraphs (B), (D), (E), (F), and (G).

“(ii) APPLICABLE LABORERS.—For purposes of this clause, the term ‘applicable laborers’ means, with respect to any building, any laborers employed by the taxpayer, or any contractor or subcontractor, in the construction, alteration, or repair of the building.

“(D) INCREASE IN CREDIT FOR BUILDINGS POWERED BY RENEWABLE ENERGY.—

“(i) IN GENERAL.—In the case of any building which utilizes renewable energy (as defined in section 203(b)(2) of the Energy Policy Act of 2005), and which is designated by the housing credit agency as requiring the increase in credit under this subparagraph in order for such renewable energy use to be financially feasible as part of a qualified low-income housing project—

“(I) in the case of a new building, the eligible basis of such building shall be increased by the applicable percentage of such basis determined without regard to this subparagraph and subparagraphs (B), (C), (E), (F), and (G), and

“(II) in the case of an existing building, the rehabilitation expenditures taken into account under subsection (e) shall be increased by the applicable percentage of such expenditures determined without regard to this subparagraph and subparagraphs (B), (C), (E), (F), and (G).

“(ii) APPLICABLE PERCENTAGE.—For purposes of this subparagraph, the applicable percentage is 50 percent of the percentage of the energy utilized by such building which is from renewable energy (as so defined).

“(E) INCREASE IN CREDIT FOR BUILDINGS NEAR PUBLIC TRANSPORTATION.—

“(i) IN GENERAL.—In the case of any building which is located in a public transportation zone and which is designated by the housing credit agency as requiring the increase in credit under this subparagraph in order for such building to be financially feasible as part of a qualified low-income housing project—

“(I) in the case of a new building, the eligible basis of such building shall be increased by 25 percent of such basis determined without regard to this subparagraph and subparagraphs (B), (C), (D), (F), and (G), and

“(II) in the case of an existing building, the rehabilitation expenditures taken into account under subsection (e) shall be increased by 25 percent of such expenditures determined without regard to this subparagraph and subparagraphs (B), (C), (D), (F), and (G).

“(ii) PUBLIC TRANSPORTATION ZONE.—For purposes of this subparagraph, a building is located in a public transportation zone if—

“(I) the building is within one-half mile of an existing commuter rail, light rail, or subway station,

“(II) the building is within one-quarter mile of one or more existing public bus stops, or

“(III) the building is located in a census tract—

“(aa) designated by the Administrator of the Environmental Protection Agency as having above average walkability, or

“(bb) which is adjacent to 2 or more such census tracts described in item (aa).

“(F) INCREASE IN CREDIT FOR BUILDINGS SERVING HOUSEHOLDS WITH PEOPLE WITH DISABILITIES.—

“(i) IN GENERAL.—In the case of any building which has low-income units that meet the applicable design standards for occupancy by persons with mental, physical, sensory, or developmental disabilities, and which is designated by the housing credit agency as requiring the increase in credit under this subparagraph in order for such building to be financially feasible as part of a qualified low-income housing project—

“(I) in the case of a new building, the eligible basis of such building shall be increased by the applicable percentage of such basis determined without regard to this subparagraph and subparagraphs (B), (C), (D), (D), and (G), and

“(II) in the case of an existing building, the rehabilitation expenditures taken into account under subsection (e) shall be increased by the applicable percentage of such expenditures determined without regard to this subparagraph and subparagraphs (B), (C), (D), (E), and (G).

“(ii) DESIGN STANDARDS.—For purposes of clause (i), the term ‘applicable design standards’ means the principles and standards of adaptable design as detailed in the Uniform Federal Accessibility Standards, or any successor standard designated by the Secretary.

“(iii) APPLICABLE PERCENTAGE.—For purposes of this subparagraph, the term ‘applicable percentage’ means the number of percentage points (not to exceed 50 percentage points) by which—

“(I) the ratio (expressed as a percentage and rounded to the nearest percent) of the number of low-income units in the building that meet the applicable design standards for occupancy by persons with mental, physical, sensory, or developmental disabilities bears to the total number of units in the building, exceeds

“(II) 5 percentage points.

“(G) INCREASE IN CREDIT FOR BUILDINGS SERVING EXTREMELY LOW-INCOME FAMILIES.—

“(i) IN GENERAL.—In the case of any building in which 20 percent of the units are occupied by extremely low-income families and which is designated by the housing credit agency as requiring the increase in credit under this subparagraph in order for such building to be financially feasible as part of a qualified low-income housing project—

“(I) in the case of a new building, the eligible basis of such building shall be increased by 50 percent of such basis determined without regard to this subparagraph and subparagraphs (B), (C), (D), (E), and (F), and

“(II) in the case of an existing building, the rehabilitation expenditures taken into account under subsection (e) shall be increased by 50 percent of such expenditures determined without regard to this subparagraph and subparagraphs (B), (C), (D), (E), and (F).

“(ii) EXTREMELY LOW-INCOME FAMILIES.— For purposes of this subparagraph, the term ‘extremely low-income families’ means families whose annual incomes do not exceed 30 percent of the area median gross income, as determined in consultation with the Secretary of Health and Human Services.

“(H) LIMITATION.—Notwithstanding subparagraphs (B), (C), (D), (E), (F), and (G)—

“(i) the eligible basis of any building shall not exceed an amount equal to 250 percent of such basis determined without regard to subparagraphs (B), (C), (D), (E), (F), and (G), and

“(ii) the rehabilitation expenditures taken into account under subsection (e) shall not exceed 250 percent of such expenditures determined without regard to subparagraphs (B), (C), (D), (E), (F), and (G).”.

(2) CONFORMING AMENDMENTS.—Section 42(d)(5)(B)(i) of such Code is amended—

(A) by striking “shall be 130 percent of” each place it appears in subclauses (I) and (II) and inserting “shall be increased by 30 percent of”, and

(B) by striking “this subparagraph” each place it appears in subclauses (I) and (II) and inserting “this subparagraph and subparagraphs (B), (C), (D), (E), (F), and (G)”.

(3) EFFECTIVE DATE.—The amendments made by this subsection shall apply to buildings placed in service after the date of the enactment of this Act.

(b) Set-Aside for certain projects.—

(1) IN GENERAL.—Section 42(h) of the Internal Revenue Code of 1986 is amended by adding at the end the following new paragraph:

“(9) PORTION OF STATE CEILING SET-ASIDE FOR CERTAIN PROJECTS.—

“(A) IN GENERAL.—Not more than two-thirds of the State housing credit ceiling for any State for any calendar year shall be allocated to projects other than qualified low-income housing projects described in subparagraphs (C), (D), (E), (F), and (G) of subsection (d)(5).

“(B) STATE MAY NOT OVERRIDE SET-ASIDE.—Nothing in subparagraph (F) of paragraph (3) shall be construed to permit a State not to comply with subparagraph (A) of this paragraph.”.

(2) EFFECTIVE DATE.—The amendments made by this subsection shall apply to calendar years beginning after the date of the enactment of this Act.

(a) In general.—Section 42(h)(4) of the Internal Revenue Code of 1986 is amended by striking subparagraph (B) and inserting the following:

“(B) SPECIAL RULE WHERE MINIMUM PERCENT OF BUILDINGS IS FINANCED WITH TAX-EXEMPT BONDS SUBJECT TO VOLUME CAP.—For purposes of subparagraph (A), paragraph (1) shall not apply to any portion of the credit allowable under subsection (a) with respect to a building if—

“(i) 50 percent or more of the aggregate basis of such building and the land on which the building is located is financed by 1 or more obligations described in subparagraph (A), or

“(ii) (I) 15 percent or more of the aggregate basis of such building and the land on which the building is located is financed by 1 or more qualified obligations, and

“(II) 1 or more of such qualified obligations—

“(aa) are part of an issue the issue date of which is after December 31, 2023, and

“(bb) provide the financing for not less than 5 percent of the aggregate basis of such building and the land on which the building is located.

“(C) QUALIFIED OBLIGATION.—For purposes of subparagraph (B)(ii), the term ‘qualified obligation’ means an obligation which is described in subparagraph (A) and which is part of an issue the issue date of which is before January 1, 2026.”.

(b) Effective date.—

(1) IN GENERAL.—The amendment made by this section shall apply to buildings placed in service in taxable years beginning after December 31, 2023.

(2) REHABILITATION EXPENDITURES TREATED AS SEPARATE NEW BUILDING.—In the case of any building with respect to which any expenditures are treated as a separate new building under section 42(e) of the Internal Revenue Code of 1986, for purposes of paragraph (1), both the existing building and the separate new building shall be treated as having been placed in service on the date such expenditures are treated as placed in service under section 42(e)(4) of such Code.

(a) In general.—Section 42(h)(6)(D)(ii)(II) of the Internal Revenue Code of 1986 is amended by striking “15 years” and inserting “35 years”.

(b) Effective date.—The amendment made by this section shall apply to agreements entered into in taxable years beginning after the date of the enactment of this Act.