PROBLEM TO BE SOLVED : To provide proper real estate information to a customer in regard to each real estate agent installed with a terminal device.SOLUTION : In the real estate searching system capable of providing pieces of real estate information between the real estate agents by using a telecommunication network, real estate drawing information D prepared by a real estate agent F2 is sent to an operating company of a server constructing the telecommunication network using type real estate searching system. In the server, a company information section AP2 is converted into a company information section AP2i corresponding to a real estate agent Fi requesting transfer of the real estate drawing information D, and it is sent to the terminal device Xi of the real estate agent Fi.