This paper studies the effects of space composition at privatehouse-turned group homes on residents' aspects of living in context of the actual daily lives thereat, comparing residents' staying places at group homes with different space composition in respect with the relation between private rooms and common space, and between different types of multiple common spaces. We found the relation between the space composition and residents' aspects of living as follows. In group homes with "integrated" space composition where there is a series of, or integrated common space offered as a main staying place for residents in the daytime, the staff is easy to watch all residents and the sense of unity as a group is nurtured among residents, while the grouping of residents and the sense of privacy is not easy to achieve. In the case of "segmented" or "divided" space composition where multiple common spaces are used, residents can enjoy the greater variation of life and more secured individual lifestyles compared to the "integrated" space composition as the residents have some freedom of choice of staying places.Asuka YAMADA 74 638 781-790 2009