| Company | Timeline | Status | |
| Overstone Build Limited Director • Director  | 30 Aug 2023←2 Years 2 Months→Current  | Active  | |
| Overstone Management Limited Director • Builder  | 30 Apr 2013←12 Years→Current  | Active  | |
| Mullbuild Limited Director • Builder  | 3 Mar 2006←3 Years→7 Dec 2009  | Active  | |
J&M Mullarkey Property Limited Director • Building Contractor  | 21 Feb 2005←12 Years→12 Dec 2017  | Dissolved  | |
| Overstone Building Services Limited Director • Building Contractor  | 10 Apr 2003←21 Years→26 Nov 2024  | Dissolved  | |
