An intelligent real estate system including an intelligent real estate sign having embedded processing functionality and a wireless communication device capable of receiving wireless electronic queries and programming instructions and for communicating with local and remote information sources about a real estate property and with controlling agents for reporting status. Further included is an electronic lock box controlling access to the real estate property and having an embedded wireless communication device capable of receiving messages and control signals from the real estate sign and from a property owner/occupant and/or real estate agents for reporting status. An earth battery may also be included, at least partially contained within the real estate sign and supplying power to the real estate sign.