4. Q. WHAT ARE THE RESTRICTIONS ON DEVELOPING WITH FACTORY BUILT HOUSING IN CALIFORNIA?

A. Manufactured housing (HUD code). Since the early 1990s, In California, over 50 percent of new manufactured homes sold are sited on lots in urban, suburban or rural neighborhoods. Facilitating this opportunity are state laws (Government Code Sections 65852.3 and 65852.4) which state that cities and counties cannot prohibit manufactured homes on permanent foundations from being located on any lot which is zoned for site-built single family residential homes. Local governments may only impose architectural requirements on the manufactured home itself which are limited to roof overhang, roofing material, and siding material, so long as the requirements, or any other lot development standards imposed on the manufactured home installation, do not exceed those required for a conventional home on the same lot. The state does not require manufactured homes to be installed on foundation systems, although local governments may impose this restriction on their own. Also, Homeowners Association covenants, conditions and restrictions (CC&R's) adopted on or after January 1, 1998, cannot forbid the sitting of a manufactured home on a residential lot, if the home can meet the same architectural standards imposed on any site-built homes in the subdivision.
B. Factory Built Housing (CBC code). Since the early 2000s, The same State level of entitlement indicated above, that has been effect for HUD code housing, is now applied to CBC code Modular Housing. The doors are open statewide for CBC code modular product to be placed not only on all residential settings, but also in multifamily and commercial settings i.e. wherever any site built product can be done!!  The only restrictions are the  factories ability to build and ship the product.