Tennessee Code Title 62. Professions, Businesses and Trades § 62-32-317

(a) Each certification, license or registration granted by the commissioner shall expire on the last day of the twenty-fourth month following its issuance or renewal and shall become invalid on that date unless renewed.

(b) Renewal notices shall be mailed ninety (90) days prior to the expiration date of the certification. The renewal must be received in the office of the commissioner prior to the expiration of the certification.

(c) It is the duty of the commissioner to notify by mail every person certified under this part of the date of expiration of the person's certificate of certification and the amount of fee required for its renewal. The notice shall be mailed in accordance with this section.

(d) Applications for certification and renewal of certification shall list all persons required to be licensed in accordance with § 62-32-312(a).

(e) The fee to be paid for the renewal of a certification after the expiration date shall be increased ten percent (10%) for each month or fraction of a month that payment for renewal is delayed; provided, that the maximum fee for a delayed renewal shall not exceed twice the normal fee.

(f) No alarm systems contractor shall be qualified to receive a renewal certification when the alarm systems contractor has been in default in complying with this part for a period of three (3) months, and, in such event, the alarm systems contractor, in order to qualify under the law, shall make a new application as in the case of the issuance of the original license.