PURPOSE : A method for mediating real estate for sale is provided to easily search buyers and seller according to sale conditions registered in immovable property sales or conditional sales.CONSTITUTION : A method for mediating real estate for sale comprises the following steps : firstly searching buyers and seller matching with the information stored in database based on the main sale information (S20) when a command searching the sale is inputted by users (S10); secondly searching the buyers and seller matching with the inputted additional sale information among the additional sale information stored in the database based on the inputted additional sale information when a second searching command is inputted (S30); and calculating the difference of additional selling information and additional buying information of buyers and seller which are firstly searched in immovable property sale database or cash flowing database and searching second buyers or sellers to complement the same (S50) when buyers and seller corresponding to additional sale conditions do not exist (S40).[Reference numerals] (AA) Start; (BB) Yes; (CC) No; (DD) Input a command searching the sale; (S10) Input a command searching the sale; (S20) Firstly search buyers and sellers; (S30) Secondly search buyers and sellers; (S40) Are buyers and sellers present?; (S50) Search a second seller or a second buyerCOPYRIGHT KIPO 2013