Cal. Health & Safety Code § 50153

To further the goals of this division and to enable the success of a statewide housing program, it is essential, and the Legislature intends, that the agency and the department shall closely coordinate their activities to assure that the goals and purposes of this division are realized. To this end, the Secretary of the Business, Transportation, and Housing Agency and the director of the department have been given a role on the board which administers the agency and approves major contractual agreements, and a veto power over agency regulations in certain policy areas as specified in Section 50462, and the agency is required to coordinate its activities with the department. Subject to these restrictions, however, and when carrying out its own unique responsibilities, the agency is relatively free of regulation by other agencies of state government.