Cal. Health & Saf. Code § 18613.5
The Department of Housing and Community Development, with the review and advice of the Seismic Safety Commission, shall adopt such rules and regulations as are necessary to ensure that purchasers of all manufactured homes and mobilehomes installed for human occupancy pursuant to Section 18613 are offered earthquake resistant bracing systems which meet generally accepted seismic safety standards for the reduction of damage and for the protection of the health and safety of the occupants. Such rules and regulations also shall include provisions for establishing a process and a fee schedule for the design review and certification by the department.
To the extent practical, the department shall be responsible for notifying owners of existing licensed manufactured homes and mobilehomes that a certification process has been established so that when considering purchase of a bracing system the owners can determine if the product or system is certified by the department.
The fees established by the department shall be sufficient to pay for the development of the design criteria and standards and the costs for the design review and certification of the products or systems.
Ca. Health and Saf. Code § 18613.5