For any building to be constructed for lease to, and for predominant use by, the Federal Government, the Administrator of General Services—

((1)) notwithstanding , shall not make any agreement or undertake any commitment which will result in the construction of the building until the Administrator has established detailed specification requirements for the building;

((2)) may acquire a leasehold interest in the building only by the use of competitive procedures required by sections 3105, 3301, and 3303 to 3305 of title 41;

((3)) shall include in the solicitation for any lease requiring a prospectus under section 3307 an evaluation factor considering the extent to which the offeror will promote energy efficiency and the use of renewable energy;

((4)) shall inspect every building during construction to establish that the specifications established for the building are complied with;

((5)) on completion of the building, shall evaluate the building to determine the extent of failure to comply with the specifications referred to in clause (1); and

((6)) shall ensure that any contract entered into for the building shall contain provisions permitting a reduction of rent during any period when the building is not in compliance with the specifications.