| # | Entity | Status | State |
|---|---|---|---|
| 1 | 69 093 640 941 HELEN STRONACH ARCHITECTS PTY LTD |
ABN Active | NSW 2299 |
| 2 | 13 019 199 577 HELEN THERESE PARER HELEN PARER ARCHITECT |
ABN Cancelled | QLD 4102 |
| 3 | 18 817 759 927 HELEN NEILL HELEN NEILL ARCHITECTS |
ABN Cancelled | VIC 3056 |
| 4 | 50 552 762 949 TONY WALTER AND SUSAN HELEN MCLAIN TONY WALTER and SUSAN HELEN MCLAIN Architects |
ABN Active | NSW 2041 |
| 5 | 62 756 021 380 HELEN LINDSAY PEARCE HELEN PEARCE LANDSCAPE ARCHITECT |
ABN Active | NSW 2113 |
| 6 | 63 092 523 427 HELEN DOROTHY VAUGHAN Helen Vaughan Architect |
ABN Active | SA 5063 |
| 7 | 68 254 885 935 HELEN MARY DESHON SMITH HELEN SMITH ARCHITECT |
ABN Cancelled | QLD 4156 |
| 8 | 14 887 720 771 HELEN REBECCA WELLMAN Helen Wellman Landscape Architect |
ABN Active | VIC 3132 |