This paper clarifies the foundation process and projects of the Kagoshima City Housing Association (KCHA) from 1945 to 1966. We evaluate the importance of KCHA as a working organ for the housing policy, also the characteristics of their architectural works. A commercial union took the initiative in KCHA's foundation, and the revival through the commercial activation, not only by the housing supply, was the particularity of KCHA's performance. Staff of the architectural section of the Kagoshima City Office involved to the advanced design projects, such as shop-houses, apartments, suburban residential developments with detached houses.