BPC §23426.5: (a) For purposes of this article, “club” also means any tennis club that maintains not less than four regulation tennis courts, together with the necessary facilities and clubhouse, has members paying

(a) For purposes of this article, “club” also means any tennis club that maintains not less than four regulation tennis courts, together with the necessary facilities and clubhouse, has members paying regular monthly dues, has been in existence for not less than 45 years, and is not associated with a common interest development as defined in Section 4100 or 6534 of the Civil Code, a community apartment project as defined in Section 11004 of this code, a project consisting of condominiums as defined in Section 783 of the Civil Code, or a mobilehome park as defined in Section 18214 of the Health and Safety Code. (b) It shall be unlawful for any club licensed pursuant to this section to make any discrimination, distinction, or restriction against any person on account of age or any characteristic listed or defined in subdivision (b) or (e) of Section 51 of the Civil Code.