Cal. Health & Safety Code § 129175

Should a borrower be more than 10 days delinquent in paying the premium charges or inspection fees for insurance under this chapter, the department shall notify the borrower in writing. If that payment remains delinquent more than 30 days after the sending of the department’s notice to the borrower, the department shall make every reasonable effort to notify the lender in writing. If that delinquency continues, on the 31st day after sending of the department’s notice to the lender, the insurance shall be terminated and become null and void.