You may want to talk with companies that coordinate temporary rentals in homes that may not be selling. There are very few of these. They coordinate the rental and in exchange for lesser rent, the person is living in the home they keep it heated etc. and kept up but if it sells they have to move quickly. The client does not get to settle in based on the possibility that it sells and so for someone who can not live on a temporary basis this would not work. Good luck.