PROBLEM TO BE SOLVED : To grasp a state in a real-life state in a dwelling (dealing object) in a more realistic form.SOLUTION : A real estate server 1 presents the dwelling (dealing object) as a three-dimensional model (hereinafter referred to as 3D image model) reflecting the actual state (including the environment) by use of a design for the dwelling, map information, environmental information (temperature, latitude) and image information (actual image, noise) to be browsable in a user terminal 4 through a network 2 such as the Internet. A customer confirms the appearance of the desired dwelling (dealing object), the circumferential environment and the like in the state reflecting the present state, or confirm the state of a desired season by designating the season on a Web page by the user terminal 4. The presence or thickness of a heat insulating material in a wall or the presence or state of an earthquake resisting member, which cannot be known from the appearance can be confirmed on the Web page.