| # | Entity | Status | State |
|---|---|---|---|
| 1 | 64 156 233 279 CLASS A BUILDING SERVICES PTY. LTD. |
ABN Active | VIC 3340 |
| 2 | 96 001 527 813 A CLASS BUILDING SERVICES PTY LIMITED |
ABN Active | NSW 2044 |
| 3 | 78 880 703 887 WILLIAMS FAMILY TRUST A CLASS BUILDING SERVICES |
ABN Cancelled | NSW 2044 |
| 4 | 96 001 527 813 A CLASS BUILDING SERVICES PTY LIMITED A CLASS BUILDING SERVICE PTY LIMITED |
ABN Active | NSW 2044 |
| 5 | 78 880 703 887 WILLIAMS FAMILY TRUST A CLASS BUILDING SERVICES |
ABN Cancelled | NSW 2044 |