| Company | Timeline | Status | |
| Riverside Plaza Limited Director • Architect | 29 May 2003←10 Years→18 Oct 2013 | Active | |
| Garmony Limited Director • Architect | 8 Sep 1995←14 Years→31 Dec 2009 | Active | |
| Architects Benevolent Society Director • Architect | 27 Jun 1991←9 Years→14 Jun 2001 | Active | |
