California Code, Business and Professions Code - BPC § 23820

The department may make all rules consistent with the provisions of Section 22 of Article XX of the Constitution, or the provisions of this division, necessary to carry into effect the provisions of this article, and to restrict the issuance of alcoholic beverage licenses, including seasonal licenses, but not including beer, beer and wine wholesaler's, and winegrower's licenses, to a number in any county as the department shall determine is in the interest of public welfare and morals, convenience, or necessity.