California Code, Business and Professions Code - BPC § 7153.3

(a) To renew a home improvement salesperson registration, which has not expired, the registrant shall before the time at which the registration would otherwise expire, apply for renewal on a form prescribed by the registrar and pay a renewal fee prescribed by this chapter.  Renewal of an unexpired registration shall continue the registration in effect for the two-year period following the expiration date of the registration, when it shall expire if it is not again renewed.

(b) An application for renewal of registration is delinquent if the application is not postmarked or received via electronic transmission as authorized by Section 7156.6 by the date on which the registration would otherwise expire.  A registration may, however, still be renewed at any time within three years after its expiration upon the filing of an application for renewal on a form prescribed by the registrar and the payment of the renewal fee prescribed by this chapter and a delinquent renewal penalty equal to 50 percent of the renewal fee.  If a registration is not renewed within three years, the person shall make a new application for registration pursuant to Section 7153.1.

(d) This section shall become operative on July 1, 2017.