Except for owners described in paragraph (2) and owners of improved property within the area on the map referred to in
section 460u–3 of this title, dated December 1980, and numbered 626–91014, as area II–B, any owner or owners of record of improved property may retain a right of use and occupancy of said improved property for noncommercial residential purposes for a term (A) ending on his or her death or the death of his or her spouse, whichever occurs last, or (B) for a fixed term not to extend beyond
September 30, 2010, or such lesser term as the owner or owners may elect at the time of acquisition by the Secretary. In the case of improved property within the boundaries of the map dated December 1980 and numbered 626–91014 the retention of a retained right under clause numbered (A) shall only be available to homeowners of record as of
October 1, 1980, who have attained the age of majority as of that date and make a bona fide written offer not later than
October 1, 1985, to sell to the Secretary. Where any such owner retains a right of use and occupancy as herein provided, such right during its existence may be conveyed or leased for noncommercial residential purposes. The Secretary shall pay to the owner the fair market value of the property on the date of such acquisition, less the fair market value on such date of the right retained by the owner.