The increase in housing costs in modern cities has caused problems with the housing stability of the younger generation. These problems led to a new perception of housing. The past generation regarded the 'house' as a means of ownership and a means of showing economic power, The current generation has begun to realize that they do not necessarily have to own a home, and that they can share and use the required part of the schedule. New alternative dwellings have begun to emerge where non-blood-related households are living together rather than blood-related households. In order to solve the social and physical problems, various generations-1 households, second generation households, elderly households, etc. began to face a life crisis through a common living space distinguished from personal space with a sense of community together with their neighbors. However, there is not much research on the extent and size of the private space and the shared space in the community housing other than the existing housing, and the program, the area and the management plan of the presently popular case are studied.