Cal. Health & Safety Code § 50515.2
(a) Notwithstanding any other law, the department may extend the term of an existing multifamily housing loan made by the department under the original Rental Housing Construction Program established by Chapter 9 (commencing with Section 50735), the Special User Housing Rehabilitation Program established by Section 50670, or the Deferred Payment Rehabilitation Loan Program established by Chapter 6.5 (commencing with Section 50660) upon the request of any borrower subject to the following conditions:
(4)
(A) The borrower shall agree to a rent schedule that ensures that all assisted units are affordable to households earning no more than 60 percent of the area median income and that at least 35 percent of all assisted units shall be reserved for, affordable to, and occupied by, households earning less than or equal to the midlevel target used by the Multifamily Housing Program, unless the department finds both of the following:
(C) For the purposes of this paragraph, “midlevel target used by the Multifamily Housing Program” shall mean the following:
(d)
(2) Upon the request of a borrower the agency may extend the term of an existing loan for an agency project by a period that is equal to the remaining useful life of the project, as determined by the agency, but not more than 55 years and not less than 30 years from the date of agency approval, under terms that are substantially consistent with the purposes of this section, if all of the following conditions are met: