California Code, Business and Professions Code - BPC § 8612

(a) The licenses of qualifying managers and company registrations shall be prominently displayed in the registered company's office, and no registration issued hereunder shall authorize the company to do business except from the location for which the registration was issued. Each registered company having a branch office or more than one branch office shall be required to display its branch office registration prominently in each branch office it maintains.

(b) When a registered company opens a branch office it shall notify the registrar on a form prescribed by the board and issued by the registrar in accordance with rules and regulations adopted by the board. The notification shall include the name of the individual designated as the branch supervisor and shall be submitted with the fee for a branch office prescribed by this chapter.