California Code, Health and Safety Code - HSC § 1730

(b)(1) At least 45 days prior to the expiration of a license issued pursuant to this chapter, the department shall mail an application for renewal to the licensee.

(2) Any application for a license renewal shall be submitted with the necessary fee in accordance with subdivision (a). A license shall be deemed renewed upon payment of the necessary fee, commencing from the license's expiration date. If the requirements of this section are met, the department shall issue a license to the agency and its branches by the expiration date of the license to ensure the provider remains in good standing. The agency's license shall be mailed within 30 calendar days after the date the department receives the renewal fee.