; and (II) no new structure will be erected on the property acquired other than— (aa) a public facility that is open on all sides and functionally related to a designated open space; (bb) a restroom; or (cc) a structure that the Administrator approves in writing before the commencement of a construction of the structure; and (iv) the recipient may make no subsequent application for disaster assistance for any purpose and no such assistance will be provided to the applicant from any Federal source; (E) may not use the amounts— (i) to construct buildings or expand existing buildings, unless the activity is for the purpose of flood mitigation; (ii) to improve any structure, unless the recipient has obtained flood insurance coverage, which shall be maintained for the useful life of the structure, in an amount that is not less than the lesser of— (I) the eligible project costs with respect to the structure; and (II) the maximum insurable limit for the structure under the national flood insurance program coverage for the structure; (iii) to improve a residential property with an appraised value that is not less than 125 percent of the limitation on the maximum original principal obligation of a conventional mortgage that may be purchased by the Federal National Mortgage Association or the Federal Home Loan Mortgage Corporation in the area in which the property is located, as established under section 302(b)(2) of the Federal National Mortgage Association Charter Act ( 12 U.S.C. 1717(b)(2) ) and section 305(a)(2) of the Federal Home Loan Mortgage Corporation Act ( 12 U.S.C. 1454(a)(2) ); (iv) for the direct benefit of a homeowner if the annual household adjusted gross income of the homeowner during the previous fiscal year was not less than $200,000, as annually adjusted by the Administrator to reflect changes in the Consumer Price Index for All Urban Consumers, as published by the Bureau of Labor Statistics of the Department of Labor and rounded to the nearest $25