Civ. Code, § 1102.3a

(a) The transferor of any manufactured home or mobilehome subject to this article shall deliver to the prospective transferee the written statement required by this article, as follows:

(1) In the case of a sale, or a lease with an option to purchase, of a manufactured home or mobilehome, involving an agent, as defined in Section 18046 of the Health and Safety Code, as soon as practicable, but no later than the close of escrow for the purchase of the manufactured home or mobilehome.

(2) In the case of a sale, or lease with an option to purchase, of a manufactured home or mobilehome, not involving an agent, as defined in Section 18046 of the Health and Safety Code, at the time of execution of any document by the prospective transferee with the transferor for the purchase of the manufactured home or mobilehome.

(b) With respect to any transfer subject to this section, the transferor shall indicate compliance with this article either on the transfer disclosure statement, any addendum thereto, or on a separate document.

(c) If any disclosure, or any material amendment of any disclosure, required to be made pursuant to subdivision (b) of Section 1102, is delivered after the execution of an offer to purchase, the transferee shall have three days after delivery in person or five days after delivery by deposit in the mail, to terminate his or her offer by delivery of a written notice of termination to the transferor.