40 U.S.C. § 1302: Lease of buildings

Except as otherwise specifically provided by law, the leasing of buildings and property of the Federal Government shall be for a money consideration only. The lease may not include any provision for the alteration, repair, or improvement of the buildings or property as a part of the consideration for the rent to be paid for the use and occupation of the buildings or property. Money derived from the rent shall be deposited in the Treasury as miscellaneous receipts.