Cal. BPC § 5088

Any individual who is the holder of a current, active, and unrestricted license as a certified public accountant issued under the laws of any state and who applies to the board for a license as a certified public accountant under the provisions of Section 5087 may, until the time the application for a license is granted or denied, practice public accountancy in this state only under a practice privilege pursuant to the provisions of Article 5.1 (commencing with Section 5096), except that, for purposes of this section, the individual is not disqualified from a practice privilege during the period the application is pending by virtue of maintaining an office or principal place of business, or both, in this state. The board may by regulation provide for exemption, credit, or proration of fees to avoid duplication of fees.