Cal. Health & Saf. Code § 51227.7
It shall be a goal of the agency that not less than 80 percent of the dollar amount of financing from proceeds of bonds issued after December 31, 1979, be used to fund loans for the new construction or substantial rehabilitation of housing. In no event shall the agency allocate less than 60 percent of the dollar amount of its financing from bond proceeds to fund loans (1) for new construction and substantial rehabilitation and (2) to make available subsidized rental units. This requirement shall apply to loans made after December 31, 1979, and shall be cumulative.
As used in this section, "substantial rehabilitation" means rehabilitation in which the costs of rehabilitation equal or exceed 20 percent of the value of the structure after rehabilitation.
Ca. Health and Saf. Code § 51227.7