Cal. Bus. & Prof. Code § 23426

For the purposes of this article “club” also means any golf club which owns, maintains, or operates a regular golf links together with a clubhouse thereon; or any swimming and tennis club which maintains a standard AAU swimming pool and not less than two regulation tennis courts, together with the necessary facilities and clubhouse, which has members paying regular monthly dues; or any swimming club which maintains a standard AAU swimming pool and not less than two regulation tennis courts, together with the necessary facilities and clubhouse, or any tennis club which maintains not less than five regulation tennis courts, together with the necessary facilities and clubhouse, and which swimming club or tennis club has members paying regular monthly dues.