Existing law requires the Office of the State Fire Marshal to develop and make available on its internet website a Wildland-Urban Interface Fire Safety Building Standards Compliance training intended for use in the training of local building officials, builders, and fire service personnel, as specified. Existing law requires the Office of the State Fire Marshal to develop and update a Wildland-Urban Interface Products listing of products and construction assemblies that comply with prescribed regulations regarding building in a wildland-urban interface area. Existing law authorizes the Office of the State Fire Marshal to expend funds from the Building Standards Administration Special Revolving Fund, upon an appropriation by the Legislature, for the purposes of researching and developing the products listing and the educational and training provisions. Existing law requires the Office of the State Fire Marshal to establish the State Fire Marshal's Wildfire Mitigation Advisory Committee. This bill would require, on or before January 1, 2027, the State Fire Marshal's Wildfire Mitigation Advisory Committee to develop a home hardening certification program that identifies home hardening measures, including defensible space, that can be implemented during renovation or property improvement projects, or both, to substantially reduce the risk of loss during a fire and bring existing building stock into alignment with state building standards for wildland-urban interface areas. The bill would authorize the Office of the State Fire Marshal to expend funds from the Building Standards Administration Special Revolving Fund, upon an appropriation by the Legislature, for the purposes of developing the home hardening certification program. This bill would incorporate additional changes to Section 13159.5 of the Health and Safety Code proposed by SB 514 to be operative only if this bill and SB 514 are enacted and this bill is enacted last.