; and (2) by adding at the end the following: (4) An appropriation for any costs and expenses associated with administering an acquisition by exchange involving real property or in-kind consideration, including services, with a fair market value of $3,095,000 or more. . (b) Effective date The amendments made by this section shall not apply to projects in which a procurement has already begun. 4. Zero-based space justification Section 3307(b) of title 40, United States Code, is amended— (1) in paragraph (5), by inserting before the semicolon the following: , including a cost comparison between leasing space or constructing space ; (2) in paragraph (7) by striking and at the end; (3) in paragraph (8) by striking the period and inserting ; and