| # | Entity | Status | State |
|---|---|---|---|
| 1 | 26 154 391 563 O'Brien Electrical Contracting Pty Ltd |
ABN Active | QLD 4215 |
| 2 | 36 668 811 738 O'BRIENS RURAL CONTRACTING PTY LTD |
ABN Active | NSW 2343 |
| 3 | 43 624 281 992 OBRIEN CONTRACTING (ACT) PTY LTD |
ABN Active | ACT 2612 |
| 4 | 59 608 101 855 O'BRIEN CONTRACTING (WELLINGTON) PTY LTD |
ABN Active | NSW 2820 |
| 5 | 62 006 127 224 K.L. O'BRIEN CONTRACT WELDING PTY. LTD. |
ABN Cancelled | NSW 2262 |
| 6 | 79 007 162 923 O'BRIEN CONTRACTING PTY. LTD. |
ABN Active | VIC 3207 |
| 7 | 85 630 671 439 CORY O'BRIEN CIVIL CONTRACTING PTY LTD |
ABN Active | NSW 2529 |
| 8 | 79 007 162 923 O'BRIEN CONTRACTING PTY. LTD. O'BRIEN CONTRACTING PTY LTD |
ABN Active | VIC 3207 |