Environmental design has explained the content of plan to the expert or non-professional people thru computer graphics to make them understand it easily from old times. In the mean time, participation of local residents for the environmental design field has been raised. Many people have a tendency to participate local development plan for their residential area. Thus, real-time simulation has recently used in many places in order to correspond with the request of residents in residential public forum. However, this real-time simulation has been only targeted on participants in particular place such as residential public forum.