In modern society, it is necessary to develop sustainable housing to protect environment. There should be a study on long life housing that satisfies living condition which residents require. Long life housing research is already activating in many developed countries. Although activation of long life housing is urgent, domestically, immaturity of technology development and law and system are barrier to progression of long life housing. Increase of early construction expenses is also problematic in activation of long life housing. The purpose of this research is to clarify a necessity of long life housing, to provide high quality of sustainable residence and to protect environment. This research also suggests a need of change from previous housing to long life housing. Moreover, it will look at related law and system of domestic long life housing and compare it to international law and system. From this comparison, it will point out a need of improvement and suggest appropriate long life housing system.