In a real estate brokerage method through a video-conference (VDC), a purchaser and a broker meet with each other through an on-line VDC. This method includes steps for providing a article search page to a communication terminal of a non-member that connects with a corresponding Internet site; entering identification information of the non-member and search condition information thereof into the article search page; and providing an article describing page having information of one or more articles satisfying the search condition to the communication terminal of the non-member. In case that the non-member requests an on-line VDC, the request is offered to a corresponding article register. After the article register checks information of a non-member who requested VDC, the article register can select a VDC execution button included in a page having buttons to determine whether VDC should be executed or not.