California Code, Government Code - GOV § 65914.202

Notwithstanding any other law, any ordinance adopted by local governments that is located within an area impacted by a disaster that precludes the placement and use of a manufactured home, mobilehome, or recreational vehicle on a private lot outside of a mobilehome park or special occupancy park for use during the reconstruction or repair of any home damaged or destroyed in the disaster shall be unenforceable on a residential parcel that had a structure damaged or destroyed by the disaster for a period of three years following the disaster declaration.