PURPOSE : A system for discounting real estate and accumulating information of real estate using the Internet is provided to develop a real estate effectively by joining a consumer related to a real estate purchase as a member, supplying the optimum information wanted by the member through a question DB, a question analysis processor, and supplying accumulated question information for a real estate developer.CONSTITUTION : General information with respect to an investment process is explained to a consumer. If the member answers a question, an information supply web outputs a real estate adapted to a question result on a screen. Real estates are collected in advance and a database is constructed based on the collected real estates. The collected questions are supplied for a real estate developer. If the member displays a purchase intention with respect to a wanted real estate, the discount is applied for the member. The member uses E-money for purchasing other real estate.? KIPO 2003