California Code, Health and Safety Code - HSC § 19990.6

The provisions of Section 17920.9, the building standards published in the State Building Standards Code relating to foam building systems, and the other rules and regulations adopted pursuant to Section 17920.9, shall be applicable to the sale, offering for sale, or use in the construction of any factory-built housing of any foam building system, and to any factory-built housing in which any such system is used as a component.