Tenn. Code Ann. § 67-4-2904: New development declared to be a locally taxable privilege

(a) Engaging in the act of development within a county, except as excluded by this part, is declared to be a privilege upon which a county, by resolution or ordinance of its governing body, may levy a tax, subject to the conditions and limitations contained in this part.

(b) The resolution or ordinance levying the tax must be adopted by a two-thirds (2/3) vote of the entire membership of the county legislative body at two (2) consecutive, regularly scheduled meetings. The resolution or ordinance adopted at the first meeting must be identical to the resolution or ordinance voted upon at the second meeting.