To provide a system for calculating predicted transaction price of real estate capable of providing a highly objective predicted transaction price of real estate.

The system is constituted of plural client terminals 4 each of which is provided with a property information input means for inputting property information necessary for calculating the predicted transaction price of real estate and of a server provided with a predicted transaction price calculation means for calculating the predicted transaction price of the real estate on the basis of the inputted property information and connected to each of the client terminals 4 through a communication network 2. When property information necessary for calculating the predicted transaction price of the real estate is inputted to the property information input means, the price calculation means can calculate the predicted transaction price of the real estate. Since it is unnecessary for a seller to consult with a real estate trader, a highly objective predicted transaction price for the real estate can be obtained.