PURPOSE : A real estate searching system connecting a real estate transaction with loan reverse auction and a transaction method thereof are provided to implement a stable transaction by supplying real estate information and loan information according to conditions of a client through a matching module.CONSTITUTION : An inquiry about real estate transaction information is requested(S25). An inquiry about customer information is requested to extract loan conditions(S26). A database server of a management server and a real estate transaction information condition-analysis module are connected with each other. A real estate can be transacted according to the loan conditions is searched through inquiry and search conditions(S27).[Reference numerals] (AA) Start; (BB) Member store member; (CC) General customer member; (DD) There is a desired selling product; (EE) There is not a desired selling product; (FF) B stage; (GG) Yes; (HH) No; (S21) Member type; (S22) Log-in; (S23) Customer information input; (S24) Log-in; (S25) Search item selection - a selling product type : selling, a lease - a product kind : an apartment, an officetel, a villa, others; (S26) Inputting customer information for extracting loan conditions -income, occupation, credit management states; (S27) Searching for a tradable real estate; (S28) Outputting a search result; (S29) Searching for detailed conditions - burden interest ranges - real estate types, regions, financial institution kinds - interest rates, real estate trading money; (S30) Outputting a detailed search result; (S31) Research or not; (S32) Reservation notification registrationCOPYRIGHT KIPO 2013