California Code, Business and Professions Code - BPC § 23428.24

For the purposes of this article “club” also means any bona fide nonprofit social organization which has more than 350 members and which has as the owner, lessee, or occupant thereof operated an establishment for its members and which has been in existence for more than five years and whose purpose is to foster and develop social relations among its members and to foster pride in the national origin of its members by promoting appreciation of such national origin and its contribution to the American social order.

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 such person's color, race, religion, ancestry, national origin, sex, or age.