Sitzler Pty Ltd
Sitzler Pty Ltd: $2,375,653,696 in recorded Commonwealth contract awards across 10 contracts and 2 agencies.
Updated 2026-10-23. Source: AusTender, Department of Finance. Latest contract notice per amendment lineage.. Award values are not expenditure. One contract is counted at its latest recorded notice value; amendments are not added together. Coverage is limited to the available notices.
Agencies contracted
- Department of Defence — 9 contracts, $2,369,069,144
- CSIRO — 1 contracts, $6,584,553
| Agency | 0–$610m | Actions | ||
|---|---|---|---|---|
| Building Works | Department of Defence | $227.7m | 28 May 2026 | |
| Construction Services | Department of Defence | $239.3m | 12 Mar 2026 | |
| Facilities Services | Department of Defence | $74.9m | 16 Feb 2026 | |
| Boolardy Homestead Airstrip upgrade project. | CSIRO | $6.6m | 2 Jul 2025 | |
| Contractor Management Services | Department of Defence | $455.2m | 15 Apr 2025 | |
| Construction Support Services | Department of Defence | $362.4m | 17 May 2023 | |
| Construction Works | Department of Defence | $249.1m | 21 Mar 2023 | |
| Building Construction and Support Services | Department of Defence | $146m | 21 Oct 2021 | |
| Building Construction and Support Services | Department of Defence | $610m | 19 Oct 2021 | |
| Development Funding for Transferred Scope | Department of Defence | $4.5m | 6 Dec 2018 |
Notice details for the largest awards
- 4600021721 — Building Construction and Support Services. $609,996,312. Start date: 2021-10-19. Published: 2025-08-12. Agency: Department of Defence. AusTender notice CN3823572.
- 4600093119 — Contractor Management Services. $455,180,659. Start date: 2025-04-15. Published: 2026-05-29. Agency: Department of Defence. AusTender notice CN4153716.
- 4600052643 — Construction Support Services. $362,398,272. Start date: 2023-05-17. Published: 2026-05-18. Agency: Department of Defence. AusTender notice CN3971262.
- 4600049807 — Construction Works. $249,069,809. Start date: 2023-03-21. Published: 2025-10-08. Agency: Department of Defence. AusTender notice CN3955997.
- 4600094306 — Construction Services. $239,327,825. Start date: 2026-03-12. Published: 2026-08-24. Agency: Department of Defence. AusTender notice CN4230365.
- 4600094687 — Building Works. $227,675,846. Start date: 2026-05-28. Published: 2026-06-29. Agency: Department of Defence. AusTender notice CN4255306.
- 4600021671 — Building Construction and Support Services. $145,981,318. Start date: 2021-10-21. Published: 2025-08-08. Agency: Department of Defence. AusTender notice CN3823566.
- 4600094059 — Facilities Services. $74,940,250. Start date: 2026-02-16. Published: 2026-03-03. Agency: Department of Defence. AusTender notice CN4223307.
- 2345 — Boolardy Homestead Airstrip upgrade project. . $6,584,553. Start date: 2025-07-02. Published: 2025-10-16. Agency: CSIRO. AusTender notice CN4179453.
- 4600007651 — Development Funding for Transferred Scope. $4,498,852. Start date: 2018-12-06. Published: 2026-03-03. Agency: Department of Defence. AusTender notice CN3744031.
Other suppliers to these agencies
Department of Defence
- FMS Account Reserve Bank of Australia — $28,683,939,974 in recorded awards from this agency
- Thales Australia — $9,919,811,901 in recorded awards from this agency
- Boeing Defence Australia Ltd — $8,370,721,458 in recorded awards from this agency
- ASC Pty Ltd — $7,314,716,221 in recorded awards from this agency
- Austal Defence Shipbuilding Australia Pty Ltd — $7,140,145,315 in recorded awards from this agency
- BAE Systems Australia Ltd — $6,437,893,737 in recorded awards from this agency
- Hanwha Defense Australia Pty Ltd — $6,149,786,234 in recorded awards from this agency
- Rheinmetall Defence Australia Pty Ltd — $4,712,777,563 in recorded awards from this agency
- Ventia Australia Pty Ltd — $4,684,107,122 in recorded awards from this agency
- Raytheon Australia Pty Ltd — $4,493,779,306 in recorded awards from this agency
CSIRO
- Besix Watpac — $567,415,819 in recorded awards from this agency
- Cyan Vessel Operations Pty Ltd — $110,474,957 in recorded awards from this agency
- Dell Australia — $79,206,386 in recorded awards from this agency
- Simec ZEN Energy Retail Pty Ltd — $75,745,973 in recorded awards from this agency
- Telstra Secure Billing — $68,633,990 in recorded awards from this agency
- Perth Energy Pty Ltd — $52,834,885 in recorded awards from this agency
- Form Projects (ACT) Pty Ltd — $38,530,716 in recorded awards from this agency
- Data#3 Ltd — $38,396,379 in recorded awards from this agency
- Aurecon Australasia Pty Ltd — $31,431,213 in recorded awards from this agency
- Duratec Australia — $29,108,615 in recorded awards from this agency
An association does not prove influence.