California bills · 2025-2026 Regular Session
California AB 557
California Factory-Built Housing Law.
- Introduced
- In committee
- Passed House
- Passed Senate
- To Governor
- Became law
Sponsors
- McKinnor (Democratic)
Summary
Official abstract published by the California legislature· summary
Existing law, the California Factory-Built Housing Law, requires all factory-built housing after a specified date that is sold or offered for sale to first users within the state to bear insignia of approval issued by the department, deems that housing to comply with the requirements of all ordinances or regulations enacted by any city, city and county, county, or district that may be applicable to the construction of housing, as specified, and prohibits a city, city and county, county, and district from requiring submittal of plans for any factory-built housing manufactured, or to be manufactured pursuant to these provisions, as specified. Existing law requires the department to provide by regulation for the qualification and disqualification of design approval agencies to perform approval of factory-built housing plans and specifications and makes approval by these agencies the equivalent of department approval. The law provides that any person who violates any of these provisions and other specified law is guilty of a misdemeanor, as specified.
This bill would require plans or specifications of factory-built housing approved pursuant to these provisions to be approved by unit serial number and would authorize the approved plans or specifications to be used in subsequent development projects unless building standards relating to factory-built housing are modified, as specified. The bill would require the department and the design approval agencies to limit their review to the portions of a plan or specification that has not already received approval, as specified. By expanding the scope of an existing crime, this bill would impose a state-mandated local program.
The California Constitution requires the state to reimburse local agencies and school districts for certain costs mandated by the state. Statutory provisions establish procedures for making that reimbursement.
This bill would provide that no reimbursement is required by this act for a specified reason.
The bill would include findings that changes proposed by this bill address a matter of statewide concern rather than a municipal affair and, therefore, apply to all cities, including charter cities.
Text versions
- 04/24/25 - Amended Assembly· Apr 24, 2025
- 03/24/25 - Amended Assembly· Mar 24, 2025
- 02/12/25 - Introduced· Feb 12, 2025
- AB557
Roll-call votes
State vote data last updated Oct 15, 2026, 4:19 PM.
| Date | Vote | Result | Your legislators |
|---|---|---|---|
| Jun 2, 2025 House | AB 557 McKinnor Assembly Third Reading | pass | Set your home in California to see |
| May 23, 2025 House | Do pass. | pass | Set your home in California to see |
| Apr 24, 2025 House | Do pass and be re-referred to the Committee on [Local Government] | pass | Set your home in California to see |
Actions
- Jul 9, 2025 · Senate
In committee: Set, first hearing. Hearing canceled at the request of author. - Jun 11, 2025 · Senate
Referred to Com. on HOUSING. - Jun 3, 2025 · Senate
In Senate. Read first time. To Com. on RLS. for assignment. - Jun 2, 2025 · House
Read third time. Passed. Ordered to the Senate. (Ayes 76. Noes 0. Page 1837.) - May 27, 2025 · House
Read second time. Ordered to third reading. - May 23, 2025 · House
From committee: Do pass. (Ayes 13. Noes 0.) (May 23). - May 21, 2025 · House
Joint Rule 62(a), file notice suspended. (Page 1627.) - May 21, 2025 · House
In committee: Set, first hearing. Referred to APPR. suspense file. - May 14, 2025 · House
In committee: Hearing postponed by committee. - Apr 28, 2025 · House
Re-referred to Com. on APPR. pursuant to Assembly Rule 96. - Apr 28, 2025 · House
Re-referred to Com. on L. GOV. - Apr 24, 2025 · House
From committee chair, with author's amendments: Amend, and re-refer to Com. on L. GOV. Read second time and amended. - Apr 24, 2025 · House
From committee: Do pass and re-refer to Com. on L. GOV. (Ayes 11. Noes 0.) (April 24). Re-referred to Com. on L. GOV. - Apr 24, 2025 · House
(Pending re-refer to Com. on L. GOV.) - Apr 24, 2025 · House
Assembly Rule 56 suspended. (Page 1265.) - Mar 25, 2025 · House
Re-referred to Com. on H. & C.D. - Mar 24, 2025 · House
From committee chair, with author's amendments: Amend, and re-refer to Com. on H. & C.D. Read second time and amended. - Mar 24, 2025 · House
Referred to Coms. on H. & C.D. and L. GOV. - Feb 13, 2025 · House
From printer. May be heard in committee March 15. - Feb 12, 2025 · House
Read first time. To print.