PROBLEM TO BE SOLVED : To provide a highly convenient real estate business information providing processing system with which a nationwide user can easily obtain his/her desired property information all the time even without performing field survey.SOLUTION : Basic data such as a effective road land price and a price formula in regard to a piece of real estate are stored in a database DB. Member stores 3 throughout the nation occasionally input survey data about properties in their regions in the database DB. The organization headquarters 1 requests a member store 3 to take a survey in accordance with a consultation from a user 2. When the user 2 inputs a request condition of a property, data are retrieved through a homepage HP and results are displayed.