| Company | Timeline | Status | |
| Phil Dusek Limited Director • Architect | 24 May 2017←8 Years→Current | Active | |
| Portwood Estates Limited Director • Arch Consultant | 24 Aug 2007←6 Months→3 Mar 2008 | Dissolved | |
| Dusek Design Associates Limited Director • Architect | 17 Dec 2002←14 Years→2 May 2017 | Active | |
