[Problem] to provide a property object to retrieve the user' s account. [Solution] the present application is related to the information retrieval system, the user specifies a portion of the debt balance, the user' s real estate prices for estimating section, the user can be a financing loan amount acquisition section, and the remainder of the debtor, the price of the real estate, the loan amount based on, said user information retrieval section having the proposed real estate. Figure 6 [drawing]