The present invention refers to real estate selling the metal network contents are requested construction design and design due to design game selects buyer based on drawing, through a character and a character may of the up and the down layers by buyer through bid the construction using network of a Company for intermediating real estate over design game method are provided to, by seller estate selling for receiving information request, at least one construction design Company drawing and design whether participation design game from the steps of receiving, at least one of participation of bidding made by buyer bid auction based on selecting a buyer, said unit, and construction by buyer winning bid at least one information request is subject to centrifugal separation the lower part the auction bids construction Company by includes selecting, seller a process neither by estate evaluation may presented amount, buyer designed via a network drawing in a construction design Company block for constructing bridge building a construction Company character sequence extremely in and time the sculpture, an underground place can be windmill.