With the rapid steps of society development, it is needless to say that how important the quality of housing environment is to help people to spend a safe and pleasant elderly life. Unfortunately, the examples can be seen frequently that because of the housing problems elder people keep staying in hospital, and give too much burdens to the caregivers even the housing mess sometimes lead to lot of conflict between family relationships. Aged housing, unlike remodeling projects has the requirement of having to demolish the existing structure before a building can be built. In the process, there is a large quantity of construction waste produced, which must be disposed of in an environment-friendly way. Currently, reconstruction and remodeling are conducted to improve the performance of aged housing. Remodeling is the acts which expand a part of building and repair major parts for improving the performance of aged apartment housing. This paper used literature investigations to introduce the status of Japanese aged housing remodeling, and also the representative cases were analyzed by using a preceding research theory Murtha & Lee's user benefit criteria which is a highly comprehensive and useful listing of user benefits in the environmental design.