A certificate of registration shall be renewed biennially before December 1 of each even-numbered year by filing a biennial renewal application provided by the Board and paying the biennial renewal fee in § 31.104 (relating to schedule of fees). A certificate holder shall renew the certificate prior to the expiration date of the certificate. Applications for renewal must be submitted in accordance with this subchapter and in the manner and format prescribed by the Board. A renewed certificate of registration is valid for a period of 2 years. An initial certification of registration issued at any time after September 1 of an even-numbered year will not be subject to renewal until the next even-numbered year.
49 Pa. Code § 31.113