Cal. Business and Professions Code § 7417

Except as otherwise provided in this article, a license that has expired for failure of the licensee to renew within the time fixed by this article may be renewed at any time within five years following its expiration upon application and payment of all accrued and unpaid renewal fees and delinquency fees. If the license is renewed after its expiration, the licensee, as a condition precedent to renewal, shall also pay the delinquency fee and meet current continuing education requirements, if applicable, prescribed by this chapter. Renewal under this section shall be effective on the date on which the application is filed, or on the date on which the accrued renewal fees are paid, or on the date on which the delinquency fee, if any, is paid, whichever occurs last. If so renewed, the license shall continue in effect through the expiration date provided in this article which next occurs following the effective date of the renewal, when it shall expire if it is not again renewed.