Tennessee Code Title 7. Consolidated Governments and Local Governmental Functions and Entities § 7-86-127

(a) Unless expressly provided otherwise by law, the authority to name public and private roads and streets, including roads and streets located within residential developments, and to assign property numbers relating to the roads and streets, is exclusively vested in the legislative bodies of counties for unincorporated areas, and municipalities within their incorporated boundaries; provided, that the exercise of this authority must be in a manner acceptable to the United States postal service.

(b) The legislative bodies of any county or municipality may delegate the authority provided under this section to the emergency communications district, if there be one; provided, that the legislative body shall approve road or street name changes made by the district under such terms as the legislative body may determine.

(c) Any county or city, including districts with delegated authority, may establish and impose reasonable fees and enforce policies relating to the changing of names of roads and streets, and may establish and enforce policies for the assignment and posting requirements of property numbers.

(d) The legislative bodies of all counties and municipalities, or their designees, shall provide their local county election commissions an updated list of any modifications or changes to all house, road, or street names or numbers every six (6) months.

(e) This section may not be construed to require a local government to maintain any portion of a road that the local government has not accepted.