The present invention relates to a group purchasing method through selling inducement of unsold real estate, which induces selling by providing information on the basis of determining the investment value on the unsold real estate and can make the unsold real estate for sales, whose selling is induced, be sold at a discount price through group purchasing. Accordingly, the present invention has the effect of being able to activate unsold real estate trading by inducing trading of the unsold real estate by posting comparison information of sold real estate information and unsold real estate information or information between unsold real estates to be judged by a member easily and rapidly, and can achieve trading at a low price by group purchasing of the unsold real estate.COPYRIGHT KIPO 2014