Tenn. Code § 7-84-704
This part is intended to afford an alternative method for the making of improvements by municipalities, the creation of special improvement districts for infrastructure development districts of the various municipalities, the levy of assessments and the issuance of bonds by municipalities, and does not deprive any municipality of the right to make improvements, create special improvement districts, levy assessments or other special taxes, or issue bonds under authority of any other law of this state, including chapters 32 and 33 of this title and parts 1-6 of this chapter; provided, that this part constitutes full authority for the making of improvements, creation of infrastructure development districts, levy of assessments, and issuance of bonds under the Local Government Public Obligations Act of 1986, compiled in title 9, chapter 21, to the extent applicable, by such municipalities who choose to act under this part.
T.C.A. § 7-84-704