| # | Entity | Status | State |
|---|---|---|---|
| 1 | 35 603 003 596 SOUTH HILLS CONSULTING ENGINEERS PTY. LTD. |
ABN Cancelled | NSW 2220 |
| 2 | 73 150 376 140 HILLS CONSULTING ENGINEERS PTY. LTD. |
ABN Active | NSW 2150 |
| 3 | 73 168 884 311 HILL AND CANNING CONSULTING ENGINEERS PTY. LTD. |
ABN Active | VIC 3123 |
| 4 | 16 060 190 084 PREM CHAND Hills Consulting Engineers |
ABN Cancelled | NSW 2147 |
| 5 | 66 099 997 985 EDGE CONSULTING ENGINEERS PTY LTD PETER HILL CONSULTING ENGINEERS PTY LTD |
ABN Active | WA 6028 |
| 6 | 69 089 166 431 PETER R C & CATHERINE K HILL PETER HILL CONSULTING ENGINEERS |
ABN Cancelled | WA 6028 |
| 7 | 77 433 417 903 NOROL H HILL Norol Hill Consulting Engineer |
ABN Cancelled | NSW 2319 |