Tenn. Code Ann. § 13-11-118: Uneconomic remnant - Donation of property

(a) If the acquisition of only a portion of a property being acquired for a program or project with federal financial assistance would leave the owner with an uneconomic remnant, the state agency, local agency, or person concerned shall offer to acquire that remnant. For the purposes of this chapter, an uneconomic remnant is a parcel of real property in which the owner is left with an interest after the partial acquisition of the owner's property, and which the head of the displacing agency concerned has determined has little or no value or utility to the owner.

(b) A person whose real property is being acquired for a program or project with federal financial assistance, may, after the person has been fully informed of the person's right to receive just compensation for such property, donate such property, any part thereof, any interest therein, or any compensation paid therefor, to a state agency, local agency, or person, as such person who owns the real property shall determine.