(a) In general

Section 603(6) of the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. 5402(6)) is amended by striking on a permanent chassis and inserting with or without a permanent chassis.

(b) Manufactured home certifications

Section 604 of the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. 5403) is amended by adding at the end the following:

(i) Manufactured home certifications

(1) In general

(A) Initial certification

Subject to subparagraph (B), not later than 1 year after the date of enactment of the Housing Supply Expansion Act of 2025, a State shall submit to the Secretary an initial certification that the laws and regulations of the State—

(i)

treat a manufactured home, including a manufactured home without a permanent chassis, in parity with a manufactured home (as defined and regulated by the State); and

(ii)

subject a manufactured home without a permanent chassis to the same laws and regulations of the State as a manufactured home built on a permanent chassis with respect to financing, title, insurance, manufacture, sale, taxes, transportation, installation, and other areas as the secretary determines, after consultation with and approval by the consensus committee, are necessary to give effect to the purpose of this section.

(B) State plan submission

Any State plan submitted under subparagraph (C) shall contain the required State certification under subparagraph (A) or paragraph (3) and, if contained therein, no additional or State certification under subparagraph (A) or paragraph (3).

(C) Extended deadline

With respect to a State with a legislature that meets biennially, the deadline for the submission of the initial certification required under subparagraph (A) shall be 2 years after the date of enactment of the Housing Supply Expansion Act of 2025.

(D) Late certification

(i) No waiver

The Secretary may not waive the prohibition described in paragraph (5)(B) with respect to a certification submitted after the deadline under subparagraph (A) or paragraph (3) unless the Secretary approves the late certification.

(ii) Rule of construction

Nothing in this subsection shall be construed to prevent a State from submitting the initial certification required under subparagraph (A) after the required deadline under that subparagraph.

(2) Form of State certification not presented in a State plan

The initial certification required under paragraph (1)(A), if not submitted with a State plan under paragraph (1)(B), shall contain, in a form prescribed by the Secretary, an attestation by an official that the State has taken the steps necessary to ensure the veracity of the certification required under paragraph (1)(A), including, as necessary, by—

(A)

amending the definition of manufactured home in the laws and regulations of the State; and

(B)

directing State agencies to amend the definition of manufactured home in regulations.

(3) Annual recertification

Not later than a date to be determined by the Secretary each year, a State shall submit to the Secretary an additional certification that—

(A)

confirms the accuracy of the initial certification submitted under subparagraph (A) or (B) of paragraph (1); and

(B)

certifies that any new laws or regulations enacted or adopted by the State since the date of the previous certification does not change the veracity of the initial certification submitted under paragraph (1)(A).

(4) List

The Secretary shall publish and maintain in the Federal Register and on the website of the Department of Housing and Urban Development a list of States that are up-to-date with the submission of initial and subsequent certifications required under this subsection.

(5) Prohibition

(A) Definition

In this paragraph, the term covered manufactured home means a home that is—

(i)

not considered a manufactured home under the laws and regulations of a State because the home is constructed without a permanent chassis;

(ii)

considered a manufactured home under the definition of the term in section 603; and

(iii)

constructed after the date of enactment of the Housing Supply Expansion Act of 2025.

(B) Building, installation, and sale

If a State does not submit a certification under paragraph (1)(A) or (3) by the date on which those certifications are required to be submitted—

(i)

with respect to a State in which the State administers the installation of manufactured homes, the State shall prohibit the manufacture, installation, or sale of a covered manufactured home within the State; and

(ii)

with respect to a State in which the Secretary administers the installation of manufactured homes, the State and the Secretary shall prohibit the manufacture, installation, or sale of a covered manufactured home within the State.

(c) Other Federal laws regulating manufactured homes

The Secretary of Housing and Urban Development may coordinate with the heads of other Federal agencies to ensure that Federal agencies treat a manufactured home (as defined in Federal laws and regulations other than section 603 of the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. 5402)) in the same manner as a manufactured home (as defined in section 603 of the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. 5402)), as amended by this Act.

(d) Assistance to States

Section 609 of the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. 5408) is amended—

(e) Preemption

Nothing in this section or the amendments made by this section shall be construed as limiting the scope of Federal preemption under section 604(d) of the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. 5403(d)).