On Wednesday, U.S. Senator Katie Britt, R-Alabama, joined a bipartisan group of Senate colleagues in introducing the Housing Supply Expansion Act of 2025.
The new legislation would remove a federal regulation on “manufactured housing”—prefabricated homes that are built in a factory setting before being transported to the site of use—that currently requires such homes to retain a permanent steel chassis even after installation to ensure future portability.
Critics of the permanent chassis requirement argue that it restricts architectural flexibility, limiting the floor plans available to homeowners. While manufactured homes are already typically more cost-effective than site-built houses due to their more efficient construction method, some suggest that removing the chassis requirement could also further reduce the cost of manufactured homes.
Under the Housing Supply Expansion Act, states would be allowed to opt into treating manufactured homes without a permanent chassis the same as those that retain a permanent chassis. To do so, states would be required to submit a certificate to the Secretary of Housing and Urban Development within a year of the law’s enactment.
Britt celebrated the legislation’s introduction in an official press release Wednesday.
“The Housing Supply Expansion Act of 2025 updates current law to reflect modern housing needs and reduces red tape to make housing more affordable for Americans,” Britt said. “I remain committed to advancing innovative solutions that increase our nation’s housing stock and help more hardworking Americans become homeowners. I’m proud to join my colleagues in this commonsense, bipartisan legislation.”
“By allowing for off-chassis manufactured homes, the bill would not only expand consumer access to more efficient and cost-effective designs, but also provide greater architectural flexibility for more modern designs that better integrate these homes into existing neighborhoods,” the press release added.
