1. Short title This Act may be cited as the Department of Defense Check Before You Rent Act . 2. Certification related to certain acquisitions or leases of real property for use of Department of Defense (a) Certification Section 2662(a) of title 10, United States Code, is amended— (1) in paragraph (2), by striking the period at the end of the first sentence and inserting the following: , as well as the certification described in paragraph (5). ; and (2) by adding at the end the following: (5) For purposes of paragraph (2), the certification described in this paragraph with respect to an acquisition or lease of real property is a certification that the Secretary concerned— (A) evaluated the feasibility of using space in property under the jurisdiction of the Department of Defense to satisfy the purposes of the acquisition or lease; and (B) determined that— (i) space in property under the jurisdiction of the Department of Defense is not reasonably available to be used to satisfy the purposes of the acquisition or lease; (ii) acquiring the property or entering into the lease would be more cost effective than the use of the Department of Defense property; or (iii) the use of the Department of Defense property would interfere with the ongoing military mission of the property. . (b) Effective date The amendment made by subsection (a) shall apply with respect to transactions occurring during fiscal year 2018 and each succeeding fiscal year.