In this paper, a potential possibility of housing condition improvement by existing housing stock utilization was analyzed using linear programming method. The result is as follows; (1) Today, the potential possibility of housing condition improvement by housing stock re-distribution has become considerable level, and it is still increasing. In the case of 1998, the people's satisfaction ratio for housing floor area can increase from 53.4% to 62.6% at maximum by housing stock re-distribution. (2) By trial calculation, it takes 150 billion yen for improving all households who are living under the minimum housing standard.
