PURPOSE : To guide a real estate object also by retrieving real-estate object information meeting a real estate object condition and a transaction condition from the data base of a center to display them on an automatic transaction processor (ATM) when a user inputs the real-estate object condition from the ATM. CONSTITUTION : When the real-estate transaction mode is set by the transaction request from a customer, region codes or the like are displayed on a CRT display part 6 to wait for input of customer' s region code. After all data are inputted, inputted data are transmitted to a center 27 through a transmission controller 26, and the center 27 retrieves real-estate object information and the transaction condition corresponding to these data, and retrieval results are received by the ATM through the transmission control part 26. When retrieval results are received, the presence or the absence of real-estate object information and the transaction condition corresponding to inputted data is decided, and real-estate object information and the transaction condition are displayed on the CRT display part 6 in case of the presence. Thus both of payment/ depositing and the guide to real estates are possible with one ATM.