Tenn. Code Ann. § 7-32-119

The cost of any improvement contemplated in this chapter shall include the expense of the preliminary and other surveys, the inspection and superintendence of the work, the preparation of plans and specifications, the printing and publishing of notices, resolutions, and ordinances required, including notice of assessment, preparing bonds, interest on bonds, and any other expense necessary for the completion of the improvement; provided, that the cost of any guaranty or maintenance of any work constructed under the terms of this chapter shall not be assessed against the property abutting on or adjacent to street or streets or other ways improved.