| DECON LIMITED | Private company limited by shares | Dissolved |
| DECON LIMITED | Private company limited by shares | Dissolved |
| DECON LIMITED | Private company limited by shares | Live |
| DECON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| DECON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Deconest Limited | Private company limited by shares | Live |
| DECONN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Deconovum Limited | Private company limited by shares | Live |
| DECONSIN LIMITED | Private company limited by shares | Dissolved |
| Deconstruct Limited | | Live |
| CITIZEN DECONSTRUCTED PTY LIMITED | Private company limited by shares | Dissolved |
| AH LEE DECONSTRUCTION COMPANY LIMITED | Private company limited by shares | Live |
| DECONTECTROL TECHNOLOGY LIMITED | Private company limited by shares | Live |