The "Housing Tariff Exclusion Act" aims to address the severe housing affordability crisis in the United States by reducing the cost of home construction. Congress finds that tariffs on key building materials significantly increase these costs, hindering the necessary investment in new housing supply. To achieve this, the bill mandates the Secretary of Commerce to establish a process for U.S. entities to request exclusions from certain duties on products used in residential construction. These "covered duties" are defined as any duty exceeding the rate in effect on January 19, 2025, specifically excluding antidumping, countervailing, or Section 201 duties. Exclusions would be granted for items designated as critical homebuilding products , which are explicitly listed by Harmonized Tariff Schedule of the United States (HTSUS) codes. For other "covered articles," an exclusion would be granted if the Secretary determines that the duty increases home construction costs and the exclusion can be administered by U.S. Customs and Border Protection. The bill requires timely adjudication of these requests, with decisions due within 15 days for critical homebuilding products and 60 days for other covered articles. Approved exclusions would apply retroactively to past entries, allowing for reliquidation. The Secretary must also ensure transparency by publishing adjudication results online and submitting quarterly reports to Congress.