PURPOSE : A device and a method for displaying geographical information of real estates using colors are provided to display a classification of a house on a land registration map with the color and a design by displaying the land registration map on the Internet or a regional life information paper.CONSTITUTION : A land registration map storing part(20) stores the land registration map. A real-estate information database(22) stores real estate information received from members. A central controller(18) includes a program displaying the design to a land registration number according to a real estate process classification included in the real estate information by combining the land registration map stored in the land registration map storing part with the real estate information stored in the real estate information database. The design is one of the color, a character, a symbol, or the design, or is made by selectively combining the color, the character, the symbol, and the design. The real estate process classification is one of deal, monthly rental, deposit-based rental, or auction.? KIPO 2006