Depending on the type of space you are renting, the location, and the market need for the type of space, you can rent your space for a few bucks or a lot of money. This is where the sites mentioned above can be useful. They will help you assess the value of the space as well as the market demand and going prices in your region. You will need to find a price that is reasonable and affordable by local standards. If someone can go with a larger company for a lower price, they are unlikely to go with a private person when looking for space to rent.