A real estate document is a legal document that is used to transfer ownership of a property or to establish the terms of a rental agreement. The two most common real estate documents are a LEASE and a DEED. A LEASE is a contract between a landlord and tenant that outlines the terms of the rental agreement, such as the length of the LEASE, the amount of rent, and any other conditions. A DEED is a legal document that transfers ownership of a property from one person to another.