There are no extraordinary qualifications to hold the office of county commissioner. However, a person must comply with the qualifications, explained under the General Information under County Offices tab, for holding office in this state.

County commissioners must reside within and be qualified voters of the district they represent. T.C.A. § 5-5-102. County employees otherwise qualified to serve may hold office as a legislative body member, except that a director of schools who was not a member of the county legislative body on June 18, 2005, is not qualified. T.C.A. § 5-5-102. However, no person elected or appointed as county mayor, sheriff, trustee, register, county clerk, assessor of property, or any other countywide office filled by popular vote or by the legislative body may be elected to the legislative body. T.C.A. § 5-5-102. Additionally, a member of a county legislative body shall resign their seat on such body if they accept an appointment for a vacancy required by the Tennessee Constitution to be filled by the county legislative body. T.C.A. § 5-5-111.

After receiving a certificate of election from the county election commission, a person elected as a county commissioner must take two oaths prior to taking office: the constitutional oath and the oath of office (otherwise known as the fidelity oath). Oaths of office are covered under the General Information tab of the County Offices topic.