Tenn. Code Ann. § 63-29-104

The terms of office of the members of the council shall be staggered four-year terms. In making the initial appointments, the commissioner shall appoint four (4) members to four-year terms, three (3) members to three-year terms and two (2) members to two-year terms. All subsequent terms shall be for a period of four (4) years. No member shall be appointed for more than two (2) consecutive terms.