Cal. Business and Professions Code § 1658.3

Nothing in this article shall limit or authorize the board to limit the number of additional places of practice authorized by the board, which are in operation on October 1, 1961, and which conform to the provisions of this article, nor prevent or limit a licensee from acquiring from his parent, by sale, transfer, assignment, gift, succession, bequest, or operation of law, whether heretofore or hereafter made, prior to January 1, 1968 or the effective date of the amendments to this section enacted by the Legislature at the 1967 Regular Session, whichever date occurs later, and from operating any additional office or offices of his parent so acquired.