California Code, Business and Professions Code - BPC § 7166

The provisions of Article 10 shall not apply to contracts for the construction of swimming pools to be built for the use and enjoyment of other than a single-family unit upon or contiguous to premises occupied only by a single-family unit, nor shall they apply to the construction of swimming pools built as part of an original building plan by the same contractor who builds a single-family dwelling unit on the premises.