The purpose of this study was to clarify how to open the private house as a communication space for elderly people by through the investigations 15 private houses in Kyoto-city. The minimum sharing way to open the front room facing the road, to use the same toilet and entrance with the manager’s family. The more convenient open way for not only elderly people but also multigeneration participant is to offer the special room, toilet, entrance for participant. Considering the elderly people for physical stress, it is better to preparing to enter into open area in the house with shoes.