The bureau is under the supervision and control of the Director of Consumer Affairs. The duty of enforcing and administering this part is vested in the chief, and he or she is responsible to the Director of Consumer Affairs therefor. The chief shall adopt and enforce rules and regulations as are determined reasonably necessary to carry out the purposes of this part. Those rules and regulations shall be adopted pursuant to Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code. Regulations adopted by the former Director of the Office of Real Estate Appraisers shall continue to apply to the bureau and its licensees.