16 U.S.C. § 410vv–6: Reservation of use and occupancy

In acquiring land within the historic zone, the Secretary may permit an owner of improved residential property within the boundaries of the historic zone to retain a right of use and occupancy of such property for noncommercial residential purposes for a term not to exceed 25 years or a term ending at the death of the owner, or the owner’s spouse, whichever occurs last. The owner shall elect the term to be reserved.