net appreciation of the property
(14) Upon the disposition by the homeowner of any property assisted pursuant to this subsection, or where the homeowner rents the property (or the owner’s unit in the case of a two- to four-family residence) for a period longer than one year, the Secretary shall provide for the recapture of an amount equal to the lesser of (A) the amount of assistance actually received under this subsection, other than any amount provided under paragraph (6), or (B) an amount at least equal to 50 per centum of the net appreciation of the property, as determined by the Secretary. For the purpose of this paragraph, the term “net appreciation of the property” means any increase in the value of the property over the original purchase price, less the reasonable costs of sale, the reasonable costs of improvements made to the property, and any increase in the mortgage balance as of the time of sale over the original mortgage balance due to the mortgage being insured pursuant to section 1715z–10 1 of this title. In providing for such recapture, the Secretary shall include incentives for the homeowner to maintain the property in a marketable condition. Notwithstanding any other provision of law, any such assistance shall constitute a debt secured by the property to the extent that the Secretary may provide for such recapture.