Local governments cannot add their own building rules for factory-built housing
Cities, counties and districts cannot impose local building standards on factory-built housing that go beyond or differ from the state building code, unless a city or county files findings that local climate, geology or terrain requires a change.
Who it affects
Builders of factory-built housing, cities and counties
When
This law takes effect on January 1, 2027. California laws take effect on January 1 of the year after they are signed, unless the law says otherwise.
- : Signed into law
- : This law takes effect
Official text
California AB 1815: Factory-built housing: building standards and local requirements.
On California Legislative Information. The official text is what counts; read it before you act.
Not legal advice. Plain-English summaries to help you find what changes and when. Not legal advice: read the official text, and ask a lawyer about your situation.