| Company | Timeline | Status | |
| Celadon Estates Limited Director • Director | 28 Apr 2020←5 Years→Current | Active | |
| Koukan Developments Ltd Director • Director | 27 Mar 2019←6 Years→Current | Active | |
Koukan Limited Director • Director | 18 Oct 2007←7 Years→5 May 2015 | Dissolved | |
| Rie Nijo Architecture Limited Director • Director | 18 Oct 2007←18 Years→Current | Active | |
