Cal. Veh. Code § 11814

(a) Every original vehicle salesperson’s license issued, and every vehicle salesperson’s license renewed, pursuant to subdivision (b) shall be valid for a period of three years from the date of issuance unless canceled, suspended, or revoked by the department.
(b) Renewal of a vehicle salesperson’s license may be made prior to the expiration date. A vehicle salesperson may not renew their license after the date of expiration.
(c) A salesperson shall obtain a duplicate license when the original is either lost or mutilated.