Cal. Bus. & Prof. Code § 5610.5

The income of a professional architectural corporation attributable to professional services rendered while a shareholder is a disqualified person, as defined in the Moscone-Knox Professional Corporation Act (Part 4 (commencing with Section 13400) of Division 3 of Title 1 of the Corporations Code), shall not in any manner accrue to the benefit of that shareholder or their shares in the professional architectural corporation.