This bill authorizes $15 billion in federal funding over ten years (2025-2034) to address affordable housing shortages in high-cost areas, distributed across three existing housing assistance programs: the Home Investment Partnerships Program, Community Development Block Grants, and the Housing Trust Fund. The funding targets jurisdictions where the federal government has already identified abnormally high housing costs relative to local income levels. Additionally, the bill requires the Department of Housing and Urban Development to conduct a comprehensive assessment of how "area median income" is calculated and reported, examining whether current calculation methods adequately reflect housing affordability challenges in urban areas and whether alternative approaches like ZIP code-level calculations could better target assistance to low-income families. The department must submit a detailed report with findings and recommendations to Congress within two years of the bill's enactment. The legislation specifically examines how suburban counties in New York may be skewing affordable housing calculations for New York City.