Veh. Code, § 11620

(a) Every occupational license issued under this chapter shall be valid for a period of one year from midnight of the last day of the month of issuance. Except as provided in subdivision (c), renewal of an occupational license for the ensuing year may be obtained by the person to whom the occupational license was issued upon application to the department and payment of the fee provided in this code.

(b) Every application for the renewal of an occupational license which expires pursuant to this section shall be made by the person to whom issued not more than 90 days prior to the expiration date, and shall be made by presenting the completed application form provided by the department and by payment of the full annual renewal fee for the occupational license.

(c) If the application for renewal of the occupational license is not made by midnight of the expiration date, the application may be made within 30 days following expiration of the license by paying the annual renewal fee and a penalty fee equal to the amount of the original application fee for each occupational license held.

(d) In no event may the licensee renew the occupational license after the expiration of the 30-day period authorized in subdivision (c).