The present invention refers to QR code based real estate brokerage service search device and method relates to ball number, registration number [...] QR code and holding more particularly real estate owner, the owner of the real estate for real estate information includes a link to a real estate transaction number to real estate attach QR code [...] QR code based real estate brokerage service number to reliability and conveniently supporting a ball device and method are disclosed. The present invention refers to real estate owner registration by issuing a proprietor unique QR code register to assist the realty conveniently caused by false offerings is used to transmit user found real contact or Internet search process when mediating office or holder without the need for the owner of the real estate conveniently attached to obtain information about the real estate interest immediately through QR code as well as owner of real estate related information can support directly to a system for registering and capable of correcting a number [...] real estate owner registration according to the realty information acquisition for real estate information for securing the trustworthiness of same time down command to the user disclosed.