Cal. Health and Safety Code § 51402

(a) Notwithstanding any other provision of this division, the agency may establish a mortgage loan program. Under the mortgage loan program, the agency may acquire or make first or second mortgage loans for the construction, purchase, improvement, or rehabilitation of residences or multifamily rental housing. (b) The agency may invest in, make, purchase, take assignments of, or otherwise acquire or make commitments to invest in, make, purchase, take assignments, or otherwise acquire any mortgage loan or partial interest or participation therein. The agency may sell, assign, or otherwise dispose of, or enter into commitments to sell, assign, or otherwise dispose of, any obligation, mortgage loan, or partial interest or participation therein, or create pools of obligations, mortgage loans, or partial interest or participations held by the agency, and issue and sell securities backed by pools. The agency may require the seller of obligations, residential mortgage loans, or partial interest or participations purchased by the agency, to use the proceeds of the sale for the purpose of financing mortgage loans, except when the proceeds arise from the sale of new loans, initiated for the purpose of sale to the agency or others. The agency may pledge mortgage loans, acquired pursuant to the mortgage loan program, to pay the principal, interest, and redemption premium, if any, on taxable securities issued by the agency for the mortgage loan program. (c) Any multifamily rental housing financed by the agency pursuant to this chapter shall be subject to the same occupancy standards specified in Section 51335.