Cal. Health & Safety Code § 35812

No financial institution shall consider the racial, ethnic, religious, or national origin composition of a neighborhood or geographic area surrounding a housing accommodation or whether or not such composition is undergoing change, or is expected to undergo change, in appraising a housing accommodation or in determining whether or not, and under what terms and conditions, to provide financial assistance for the purpose of purchasing, constructing, rehabilitating, improving, or refinancing a housing accommodation. No financial institution shall utilize appraisal practices that are inconsistent with the provisions of this part.