California Code, Civil Code - CIV § 1797.2

(a) The warranty provided for in this chapter shall apply to the manufacturer of the mobilehome or the manufactured home as well as to the contractor or dealer who sells the mobilehome or the manufactured home to the buyer. The warranty shall cover the electrical, plumbing, heating, cooling, fire safety, and structural systems, and all appliances of the mobilehome or manufactured home as installed or manufactured by the contractor, dealer, or manufacturer.

(b) Where a manufacturer sells a mobilehome or manufactured home directly to a city, city and county, or other public agency pursuant to the exception established in Section 18015.7, the manufacturer shall be responsible for providing the warranty required by this chapter.