California Code, Civil Code - CIV § 1801.4

The provisions of this chapter shall not apply to any contract or series of contracts providing for: (a) the construction, sale, or construction and sale of an entire residence, including a mobilehome, or all or part of a structure designed for commerical  1 or industrial occupancy, with or without a parcel of real property or an interest therein, (b) for the sale of a lot or parcel of real property, including any site preparation incidental to such sale, (c) the sale of any aircraft required to be registered under the Federal Aviation Act of 1958, or (d) the sale of any vessel as defined in subdivision (a) of Section 9840 of the Vehicle Code if the cash price of such vessel, including accessories and equipment sold in conjunction therewith, exceeds twenty-five thousand dollars ($25,000).