PROBLEM TO BE SOLVED : To provide a real estate auction information providing system for providing information about real estate at auction, particularly information about the rate of divergence between the minimum sale price and the sale price of real estate at auction.SOLUTION : The real estate auction information providing system includes a sale unit information storage part for storing sale unit identification information, minimum sale price information and sale price information in association, and a bid information storage part for storing the sale unit identification information and bid identification information in association. The storage parts are searched to extract the minimum sale price information and sale result information to calculate the rate of divergence.COPYRIGHT : (C)2006, JPO&NCIPI