Tennessee Code Title 62. Professions, Businesses and Trades § 62-2-307

(a) Certificates of registration shall expire two (2) years following the date of their issuance or renewal and are invalid on that date unless renewed.

(b) It is the duty of the board to notify every person registered under this chapter of the date of the expiration of that person's certificate and the amount of the fee required for its renewal for two (2) years. The notice shall be mailed at least one (1) month in advance of the date of the expiration of the certificate.

(c) Renewal may be effected at any time during the thirty (30) days preceding the certificate expiration date by the payment of the fee determined by and payable to the board.

(d) Certificates of registration shall be subject to late renewal for six (6) months following their expiration date by payment of the renewal fee plus a penalty as set by the board for each month or fraction of a month that elapses before payment is tendered.

(e) Any person wishing to renew a certificate later than six (6) months after its expiration date shall reapply for certification. The board may, in its discretion, waive any further examination of the applicant and any further education and experience beyond that obtained at the time of the applicant's original registration in this state.

(f) Notwithstanding any provision in this chapter to the contrary, the board has the authority to establish, by rule and regulation, procedures and criteria pursuant to which persons who are retired may continue to use the titles of “architect,” “engineer,” “landscape architect” or “registered interior designer” without the payment of a registration renewal fee.