1. Kozo Keikaku Engineering Inc.
2. Building Research Institute
3. Nikken Sekkei Ltd.
4. Konoike Construction Co., Ltd.
5. Takenaka Corporation
6. P.S. Mitsubishi Construction Co., Ltd.
7. Fujita Corporation
8. Sumitomo Mitsui Construction Co., Ltd.
9. Bridgestone Corporation
10. Ichijo Housing Company Co., Ltd.
11. Daiwa House Industry Co., Ltd.
12. Urban Renaissance Agency