Tennessee Code Title 67. Taxes and Licenses § 67-5-210

(a) Subject to the general requirements of § 67-5-212, real property owned and used by a nonprofit economic or charitable development organization shall be eligible for property tax exemption as a charitable use of property when the provisions of this section are met. Real property owned by a nonprofit entity that is exempt from federal income taxation under § 501(a) of the Internal Revenue Code (25 U.S.C. § 501(a)) as an organization described in § 501(c)(3) (§ 26U.S.C. § 501(c)(3)), and that is engaged in economic development, shall be eligible for property tax exemption to the extent the property is used:

(b) This section shall apply only to a nonprofit entity that has been in continual operation for not less than ten (10) years from May 18, 2015, and that has executed an economic development mission for not less than ten (10) years from May 18, 2015.

(c) Any owner of real property claiming exemption under this section shall be required to file an application for exemption with the state board of equalization on the same form and in the same manner prescribed in § 67-5-212(b).

(d) This section shall apply only in a county containing a research hospital, as defined by § 63-6-204(f)(7)(I).