; (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 in an amount at least equal to the lesser of the eligible project costs or the maximum insurable limit for the structure under the national flood insurance program coverage for the structure, which coverage shall be maintained for the useful life of 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; or (v) to acquire real property or an interest in real property unless the property is purchased from a willing seller