Housing cooperatives are a distinct form of home ownership that may have many characteristics that differ from residential arrangements such as single family family home ownership, condominiums, and renting. With limited equity, the co-op has rules regarding pricing of shares when sold. The idea behind limited equity is to maintain affordable housing. A subset of the limited equity model is the no-equity model, which looks very much like renting, with a very low purchase price (comparable to a rental security deposit) and a monthly fee in lieu of rent. When selling, all that is recouped is that very low purchase price.