With respect to any housing or community facilities or services which the Secretary of Housing and Urban Development is authorized to provide, or any property which he is authorized to acquire, under this Act, the Secretary of Housing and Urban Development is authorized by contract or otherwise (without regard to section 6101 of title 41, section 322 of the Act of June 30, 1932 (47 Stat. 412), as amended,^[1] chapters 1 to 11 of title 40 and division C (except sections 3302, 3307(e), 3501(b), 3509, 3906, 4710, and 4711) of subtitle I of title 41, and prior to the approval of the Attorney General) to make plans, surveys, and investigations; to acquire (by purchase, donation, condemnation or otherwise), construct, erect, extend, remodel, operate, rent, lease, exchange, repair, deal with, insure, maintain, convey, sell for cash or credit, demolish, or otherwise dispose of any property, land, improvement, or interest therein; to provide approaches, utilities, and transportation facilities; to procure necessary materials, supplies, articles, equipment, and machinery; to make advance payments for leased property; to pursue to final disposition by way of compromise or otherwise, claims both for and against the United States (exclusive of claims in excess of $5,000 arising out of contracts for construction, repairs, and the purchase of supplies and materials, and claims involving administrative expenses) which are not in litigation and which have not been referred to the Department of Justice; and to convey without cost to States and political subdivisions and instrumentalities thereof property for streets and other public thoroughfares and easements for public purposes: Provided, That any instrument executed by the Secretary of Housing and Urban Development and purporting to convey any right, title or interest in any property acquired pursuant to this subchapter or subchapter X of this chapter shall be conclusive evidence of compliance with the provisions thereof insofar as title or other interest of any bona fide purchasers, lessees or transferees of such property is concerned. Notwithstanding any provisions of this Act, housing or community facilities constructed by the United States pursuant to the authority contained herein shall conform to the requirements of State and local laws, ordinances, rules, or regulations relating to health and sanitation, and, to the maximum extent practicable, taking into consideration the availability of materials and the requirements of national defense, any housing or community facilities, except housing or community facilities of a temporary character, constructed by the United States pursuant to the authority contained herein shall conform to the requirements of State or local laws, ordinances, rules, or regulations relating to building codes.