The object of this research is HS housing complex owned by Ube-city.As for the Ube city-owned residence about 30 percent of the whole is wooden and semi- fireproof building, and rebuilds and abolition are considered. Updating of these stocks will become the main enterprise for ten years from now on.Moreover, the durability of public housing built in the 1970s is will be exhausted, and rebuilds of vast quantity of stocks will be difficult in view of the amount of enterprises in recent years. Therefore, Ube-city also has to recommend the improvement of the stock in 1970s.This research analyzes living style of elderly households in small space public houses, and shows the extraction at the time of the dwelling improvement.