Cal. Health & Safety Code § 18035.1
(a) As a part of the documents executed for every transaction by or through a dealer to sell or lease with the option to buy a new or used manufactured home or mobilehome, the dealer and purchaser shall sign a receipt for deposit, a copy of which shall be provided to the purchaser and a copy shall be retained by the dealer for not less than three years. It shall state at least the following in type not less than 6-point type size: