Tennessee Code Title 13. Public Planning and Housing § 13-11-109

(a) If a program or project undertaken by a state agency or with federal financial assistance cannot proceed on a timely basis because comparable replacement dwellings are not available, and the head of the displacing agency determines that such dwellings cannot otherwise be made available, the head of the displacing agency may take such action as is necessary or appropriate to provide such dwellings by use of funds authorized for such program or project. The head of the displacing agency may use this section to exceed the maximum amounts which may be paid under §§ 13-11-106 and 13-11-107, on a case-by-case basis for good cause as determined in accordance with such criteria as the governor or the governor's designee shall prescribe.

(b) No person shall be required to move from such person's dwelling on account of any program or project undertaken by a state agency or with federal financial assistance, unless the head of the displacing agency is satisfied that comparable replacement housing is available to such person.