Tenn. Code § 6-54-133
Any municipality may create a design review commission (DRC) having the authority to develop general guidelines for the exterior appearance of nonresidential property, multiple family residential property, and any entrance to a nonresidential development within the municipality. The municipal governing body may designate the planning commission as the DRC. When the municipality creates a separate DRC, the mayor shall appoint the members of the DRC from residents of the municipality and shall strive to ensure that the membership is representative of the municipality as a whole, including, if possible, members with either architectural or engineering knowledge, or any other person having experience in nonresidential building. Any property owner affected by the guidelines may appeal a decision of the DRC to the municipality's planning commission or, if there is no planning commission or if the municipality has designated the planning commission as the DRC, to the municipality's governing body.
T.C.A. § 6-54-133