As a terminal embodiment of the present invention is used by real estate agents, the location of the property came up for sale, selling price, from photos, videos, geupmae whether receiving any one or more of Commercial Information, real estate brokers to transfer by wire or wirelessly to a billboard terminal; It may comprise; and billboard for displaying the information items received from the real estate agent terminal. Commercial real estate channeled the information system, the real estate agent receives the information from the terminal to generate a Commercial Commercial information expressed window, provide information Commercial Commercial information published on the Web page of the real estate agent server; And accesses the sale information the web page through the Internet network user terminal is expressed window displays the sale information; includes, the real estate agent terminal, may be characterized in that it sends the sale information to provide the Commercial information server .