| Company | Timeline | Status | |
| Trefresa Farm Limited Director • Company Director | 9 Feb 2018←2 Years 4 Months→19 Jun 2020 | Dissolved | |
| JW Epic Limited Director • Company Director | 8 Feb 2018←2 Years 4 Months→19 Jun 2020 | Active | |
| Waldemar Gardens Properties Limited Director • Architect | 7 Oct 2015←10 Years→Current | Active | |
| J & J Cowen Properties Limited Director • Architect | 20 Aug 2015←10 Years→Current | Active | |
| Jo Cowen Architects Ltd Director • Architect | 30 Oct 2013←12 Years→Current | Active | |
| Studio Jo Cowen Ltd Director • Director | 17 Oct 2013←12 Years→Current | Active | |
