This study clarifies the roles of district planning system and building agreement as management rules of living environment at planned detached houses area and evaluation of them by residents. Most of the detached houses area, which are planned with careful consideration on landscape and living environment, are applied either district planning system or building agreement. The residents give preferable evaluation on the district planning system or building agreement. They feel that it is going to be more important to introduce new rules on renovation and rehabilitation of houses and way of living. Accordingly, the rules should cover wider fields regarding living environment.