Civil Code § 1102
ARTICLE 1.5. Disclosures Upon Transfer of Residential Property
(a) Except as provided in Section 1102.2, this article applies to any transfer by sale, exchange, real property sales contract as defined in Section 2985, lease with an option to purchase, any other option to purchase, or ground lease coupled with improvements of any single-family residential property.
(b) For purposes of this article, the definitions contained in Chapter 1 (commencing with Section 10000) of Part 1 of Division 4 of the Business and Professions Code shall apply.
(c) Any waiver of the requirements of this article is void as against public policy.