Tenn. Code Ann. § 7-82-203: Cost of establishment proceedings

All costs incident to the publication and posting of notices, and to the public hearing and determination, and all costs of the proceedings, including the costs of filing and entering the order, shall be borne by the parties filing the petition, and the county mayor may, in such county mayor's discretion, require the execution by the parties filing the petition of a cost bond in an amount and with good securities to guarantee the payment of such costs.