This study clarifies the transformation process of the building arrangement and gardens on the detached housing area. The study area is the planned housing area in Kami-Kotoen, Nishinomiya. In this area has developed since about 50 years, has not been decided the district plan and the building agreement, has maintained its living environment. The main information obtained is as follows: (1) This area has the four phases of the transformation process. (2)The extended and rebuild time relate with the change of family member. (3)The site arrangement has the site use divided nine parts, based on the original house.
