Cal. Health and Safety Code § 18032.5

(a) The Legislature hereby finds and declares all of the following: (1) California’s energy efficiency standards for new residential buildings have provided significant savings to homeowners and renters. (2) As a result of past federal preemption of the field and the exemption of manufactured homes from building standards under California law, California’s energy efficiency residential building standards have not been applied to manufactured housing. (3) The Energy Policy Act of 1992 (P.L. 102-486) authorizes the Secretary of the United States Department of Housing and Urban Development to adopt regulations establishing thermal insulation and energy efficiency standards for manufactured housing. If the secretary has not issued, within one year after October 24, 1992, the date of the enactment of the act, final regulations that establish standards that take effect before January 1, 1995, states may establish specified energy efficiency standards for manufactured housing. (4) The 1992–93 California Energy Plan, endorsed by the Governor, recommends that the federal government adopt significantly more stringent, cost-effective energy efficiency standards for manufactured housing, or, in the alternative, allow states to adopt these standards. (5) It is in the interest of this state to participate in any federal rulemaking proceeding establishing energy efficiency standards for manufactured housing, and, in the absence of timely final federal regulations, it is in the interest of this state to adopt its own energy efficiency standards for manufactured housing as authorized under federal law. (b) The Department of Housing and Community Development, in consultation with the State Energy Resources Conservation and Development Commission, shall develop and implement cost-effective energy efficiency standards for manufactured housing, to take effect before January 1, 1995. These standards shall include, but are not limited to, lighting, insulation, climate control systems, and other design and construction features that increase efficiency in energy use for manufactured housing. The standards shall be cost-effective when taken in their entirety, and when amortized over the economic life of the structure. The department shall have responsibility for enforcing the standards. The standards shall be developed in consultation with members of the manufactured housing industry. (c) This section shall become operative only if the Secretary of the United States Department of Housing and Urban Development does not issue, on or before October 24, 1993, final regulations that establish thermal insulation and energy efficiency standards for manufactured housing that take effect before January 1, 1995. If the secretary does issue those final regulations, this section shall remain in effect only until January 1, 1995, and as of that date is repealed, unless a later enacted statute, which is enacted before January 1, 1995, deletes or extends that date.