Unless your area is extremely undesirable there is always demand for room rentals. People love the flexibility of renting rooms month by month. There are no utilities to turn on, no huge deposits, and no year long leases tieing you down. Head over to Craigslist and check out the room share ads, its free to post and a great way to rent rooms out. Generally speaking a room can rent anywhere from 300-900 per month depending on the area.