Cal. Code Regs. tit. 25, § 6124
(a) General.
(b) Citizen Participation.
(c) Consultation with Other Housing Agencies and Organizations.
The head of the displacing public entity may consult or contract with the department, a local housing authority, or other agency or organization having experience in the administration or conduct of housing programs to provide technical assistance and advice in the development of the replacement housing plan.