California legislation · 2025-2026 Regular Session
California AB1815: Factory-built housing: building standards and local requirements.
Status: Chaptered, September 29, 2026
What the bill says
An act to amend Sections 19967, 19969.3, 19971, 19975.1, 19981, 19993, and 25227 of, and to add Sections 19966.1, 19971.1, and 19993.1 to, the Health and Safety Code, to amend Section 6012.7 of the Revenue and Taxation Code, and to amend Sections 321 and 387 of the Vehicle Code, relating to housing. housing Factory-built housing: building standards and local requirements. Existing law, the California Building Standards Law, establishes the California Building Standards Commission within the Government Operations Agency…
From the chaptered text, September 29, 2026:
An act to amend Sections 19967, 19969.3, 19971, 19975.1, 19981, 19993, and 25227 of, and to add Sections 19966.1, 19971.1, and 19993.1 to, the Health and Safety Code, to amend Section 6012.7 of the Revenue and Taxation Code, and to amend Sections 321 and 387 of the Vehicle Code, relating to housing. housing Factory-built housing: building standards and local requirements. Existing law, the California Building Standards Law, establishes the California Building Standards Commission within the Government Operations Agency. Existing law requires the commission to approve and adopt building standards and to codify those standards in the California Building Standards Code. Existing law, the California Factory-Built Housing Law, generally regulates the design, manufacture, and installation of factory-built housing, as defined and specified. That law specifically and entirely reserves to local jurisdictions certain local requirements, including local use zone requirements, snow load requirements, and wind pressure requirements. That law provides that any person who violates any of those provisions and other specified law is guilty of a misdemeanor, as specified. This bill also would prohibit a city, county, city and county, or district from imposing or enforcing local building standards applicable to a factory-built housing structure, as defined, that exceed or differ from the applicable mandatory standards contained in the California Building Standards Code. The bill would authorize a city or county …