In the embodiment be evaluated based on the thread transactions such as real estate real estate real estate [...] obtaining attribute information positioned in the region predetermined thread transactions real estate information acquisition section; and attribute information of real estate transaction is estimated learning model real estate [...] obtained thread transactions generating learning model generation unit; and said real estate transaction is estimated learning model said attribute information be evaluated by applying said real estate real estate server estimating section estimating that we be evaluated; transaction case be evaluated for calculating the degree of real estate and real estate real estate candidate attribute information, said attribute value to an electrical signal to be evaluated similar degree said real estate transaction case similarity score between said candidate real estate analysis unit calculating real estate and real estate candidate; and having at least one real estate transaction case similarity score within a predefined range determining unit for determining a candidate transaction case real estate transaction case including real estate price estimation system and method relative to estimated.