Cal. Health & Saf. Code § 50666
In concentrated rehabilitation areas designated pursuant to Section 51302, a person or family of low or moderate income who is the owner of an owner-occupied residential structure of one to four units may receive a deferred-payment rehabilitation loan for the excess of the cost of meeting rehabilitation standards over the amount of the neighborhood improvement loan the administering agency, local public entity, or qualified mortgage lender is able to provide without exceeding the owner's ability to afford the monthly payments required. Owners of rental housing may receive deferred-payment rehabilitation loans if necessary to avoid increases in monthly debt service which would result in rent increases causing permanent displacement of persons of low income residing in the residential structure prior to rehabilitation and if the owner contracts during the term of the loan not to raise residential rentals except as permitted by regulations of the agency pursuant to subdivision (g) of Section 51307. Owners of rental housing may also receive deferred-payment rehabilitation loans in the amount, if any, necessary to avoid such increases in monthly debt service as would make it economically infeasible to accept subsidies available to provide affordable rents to persons of low income, if the owner agrees to accept such subsidies.
Ca. Health and Saf. Code § 50666