PURPOSE : A real estate portal system is provided to enable a user to receive all the information on a real estate in real time, and to make a transaction or an auction with other users by using a real time simulation with multimedia technologies.CONSTITUTION : The system comprises steps of offering a real time internet broadcasting, enabling the user to search for a wanted real estate information from specified web database by using an exclusive search engine, offering membership management system, giving an electronic approval system when it is traded of real estate or rented of real estate, enabling the user to exchange data with law experts via an internet chatting service or an e-mail, offering state of real estate transaction or auction, calculating an extra dividend of the suction results, enabling the user to make an auction simulation before the auction of the real estate, counting the present amount of money of the user' s own real estate, enabling the user to simulate a trade simulation of the real estate, and making a fair sharing of a membership fee.COPYRIGHT 2001 KIPO