1. A method performed by a computer system communicating with at least one client computer across a network, the method comprising: creating a database of information related to at least one real estate property, the database created from selectively aggregating information from multiple sources, including at least a satellite map image of the geographic region from a satellite map, and real estate data for the at least one real estate property; providing data displayable as a client interface to the client computer across a network; receiving from the client computer a request for mapped display data including the real estate data overlaid on the satellite map image of the at least one real estate property; creating the mapped display data by visually defining the at least one real estate property on the satellite map image and layering the real estate data thereupon; sending the mapped display data to the client interface requesting the mapped display; sending data displayable to the client computer on the client interface, the data displayable on the client interface being interactive to initiate one or more specific transactions related to the at least one real estate property; receiving from the client interface a request to be provided a physical tour of the at least one real estate property; enabling a real estate agent to respond to the request to provide the physical tour based at least on a comparison of a transaction history of the real estate agent to the geographic area of the at least one real estate property; and storing information associated with the request.