| # | Entity | Status | State |
|---|---|---|---|
| 1 | 15 153 826 576 O'Brien Building (Aust) Pty Ltd |
ABN Active | VIC 3280 |
| 2 | 18 154 775 041 O'Brien Building & Construction Pty Ltd |
ABN Active | QLD 4575 |
| 3 | 26 076 366 768 B.P. O'BRIEN BUILDING SERVICES PTY LTD |
ABN Active | NSW 2074 |
| 4 | 36 676 949 894 O'BRIEN BUILD PTY LTD |
ABN Active | NSW 2480 |
| 5 | 37 641 383 431 O'BRIEN BUILD PTY LTD |
ABN Cancelled | NSW 2299 |
| 6 | 46 135 970 697 KJ & S O'BRIEN BUILDING CONTRACTORS PTY LTD |
ABN Cancelled | QLD 4812 |
| 7 | 50 662 316 378 O'BRIEN BUILDING & MAINTENANCE KI PTY LTD |
ABN Active | SA 5223 |
| 8 | 50 664 115 324 OBRIEN BUILDING YORKE PENINSULA PTY LTD |
ABN Active | SA 5575 |
| 9 | 64 109 425 809 O'BRIEN BUILDING CONTRACTORS PTY LTD |
ABN Cancelled | QLD 4053 |
| 10 | 84 088 200 659 O'BRIEN BUILDING PTY LTD |
ABN Active | NSW 2337 |
| 11 | 90 115 116 900 O'BRIEN & STAINES BUILDING PTY LTD |
ABN Active | NSW 2580 |
| 12 | 92 389 256 263 ANDERSON FAMILY TRUST & O'BRIEN BUILDING & CONSTRUCTION PTY LTD |
ABN Cancelled | QLD 4154 |