| # | Entity | Status | State |
|---|---|---|---|
| 1 | 41 002 474 035 O C P ARCHITECTS PTY LTD |
ABN Active | NSW 2010 |
| 2 | 73 520 395 474 JOHN PAUL O'NEILL o' neill architects |
ABN Cancelled | NSW 2107 |
| 3 | 82 003 043 249 QUINN O'HANLON ARCHITECTS PTY LTD QUINN O HANLON PTY LIMITED ARCHITECTS |
ABN Active | NSW 2111 |
| 4 | 74 810 988 708 TEODORO VERBI T-O Architects |
ABN Active | SA 5008 |
| 5 | 75 154 292 510 IDA & ASSOCIATES GROUP PTY LTD O & H Architects |
ABN Active | NSW 2060 |