Cal. Health & Safety Code § 37918

The local agency may employ engineering, architectural, accounting, collection, or other services, including services in connection with the servicing of loans made to participating parties, as may be necessary in the judgment of the local agency for the successful financing of such residential rehabilitation. The local agency may pay the reasonable costs of consulting engineers, architects, accountants, and construction experts, if, in the judgment of the local agency, such services are necessary to the successful financing of any residential rehabilitation and if the local agency is not able to provide such services. The local agency may employ and fix the compensation of financing consultants, bond counsel, and other advisers as may be necessary in its judgment to provide for the issuance and sale of any bonds or bond anticipation notes of the local agency.