Real estate owned or REO is a class of property owned by a lender, typically a bank, after an unsuccessful sale at a foreclosure auction. A bank will typically set the opening bid at a foreclosure auction for at least the outstanding loan amount. If there are no bidders that are interested, then the bank will legally repossess the property. As soon as the bank repossess the property, it is listed on their books as REO - Real Estate Owned - and is categorized as an asset (non-performing).

After a repossession and the property becomes classified as REO (Real Estate Owned), the bank will go through the process of trying to sell the property on its own. It will remove some of the liens and other expenses on the home and try to resell it to the public, either through future auctions or direct marketing through a real estate broker. Generally speaking, bank REO (Real Estate Owned) properties are in poor shape in terms of repairs and maintenance; however, real estate investors will often go after these properties as banks are not in the business of owning homes and so, in some cases, the low price can more than compensate for the condition of the property.