California Code, Health and Safety Code - HSC § 52079

(a) No more than 10 percent of the proceeds of any revenue bonds issued pursuant to this chapter may be used to develop the commercial property for lease.

(b) The commercial property developed will be located on the same parcel or on a parcel adjacent to a multifamily rental housing development.

(c) As a condition of the financing, any lease payments collected in excess of payments necessary for debt service, operating expenses and any required reserves related to that property, shall be used to reduce rents on units reserved for occupancy by lower income households and very low income households in a multifamily rental housing development.