The town of Thetford in Norfolk had a similar problem when many of the "London Overspill" housing units were not used by people from that area. They ended up leasing them to Air Force families at RAF Mildenhall, and RAF Lakenheath bases, and to RAF people from RAF Lyneham, a local RAF base. This made everyone happy since the homes were far better than the ex-RAF housing on those two bases,and the local housing authority was able to gain some revenues from what would have been vacant buildings.

When their need for the housing units became more pressing, they could simply terminate the leases as the occupants returned to the US.

Dave