Cal. Health & Safety Code § 18025.6

When a standard for manufactured homes which was adopted pursuant to the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. Sec. 5401 et seq.), is repealed by the United States Department of Housing and Urban Development and no new preemptive federal standard is adopted as a replacement standard, the department may continue to enforce the federal standard for manufactured homes to be sold in this state, for a period of one year from the operative date of the repeal or until the department adopts a regulation to replace the repealed federal standard, whichever occurs first. The replacement standard, if any, may be adopted as an emergency regulation.