Australia · Commonwealth contract register · Supplier record

DOWNER DEFENCE SERVICES PTY LTD

Line: Professional engineering services (81100000)Register loaded to September 2026Compiled 16 October 2026

DOWNER DEFENCE SERVICES PTY LTD — Australia · Commonwealth contract register · Supplier record: 121 contracts, all years (A$457,019,650 · Sep 2021 – Sep 2026); A$256M since January 2024 (42 contracts · 2 agencies); 5th rank in the line (of 424 suppliers · 7.44%); 37 agencies never served (A$318M on the line without DOWNER DEFENCE SERVICES PTY LTD).

Assay record ASY-AU-0BS7S4U129 · Cite as: Assay Systems, “DOWNER DEFENCE SERVICES PTY LTD: 42 government contracts in Australia since 2024”, https://assay-systems.com/register/au/downer-defence-services-pty-ltd/

121
contracts, all years
A$457,019,650 · Sep 2021 – Sep 2026
A$256M
since January 2024
42 contracts · 2 agencies
5th
rank in the line
of 424 suppliers · 7.44%
37
agencies never served
A$318M on the line without DOWNER DEFENCE SERVICES PTY LTD

Own record by year

2021 onward
A$18.3M
A$71.3M
A$111M
A$115M
A$141M
A$620K
202120222023202420252026

Who buys from DOWNER DEFENCE SERVICES PTY LTD

since January 2024
2agencies
A$256Mpaid
100.0%top buyer
Department of Defence100.0%
A$255,988,858
Australian Naval Nuclear Power Safety Regulator0.0%
A$15,556

Before 2024 only: Australian Submarine Agency, Department of Home Affairs.

The line

since January 2024
A$3.4Bline value
1,063contracts
40agencies
424suppliers
77.0%held by top ten

Professional engineering services (81100000)

A$749M
A$2.0B
A$592M
202420252026Jan–Sep
5thof 424 suppliers
A$249,599,747DOWNER DEFENCE SERVICES PTY LTD in the line
7.44%share of the line
8.2%of A$3,028,632,433 spent by Department of Defence

Agencies that buy the line and never bought from DOWNER DEFENCE SERVICES PTY LTD

37agencies
198contracts
A$317,516,698since January 2024
National Capital Authority7 contracts
A$167,499,726
Australian Nuclear Science and Technology Organisation8 contracts
A$59,749,792
Department of Foreign Affairs and Trade15 contracts
A$20,249,878
Australian Signals Directorate8 contracts
A$14,102,773
Department of Climate Change, Energy, the Environment and Water50 contracts
A$11,017,153
Department of Industry, Science and Resources21 contracts
A$9,708,396
Comcare1 contract
A$4,803,283
Department of Foreign Affairs and Trade - Australian Aid Program4 contracts
A$4,683,150
Services Australia1 contract
A$3,278,484
Australian Institute of Marine Science3 contracts
A$2,377,485
Director of National Parks1 contract
A$2,154,304
Geoscience Australia4 contracts
A$2,086,704
Australian Electoral Commission1 contract
A$2,000,000
Australian Taxation Office2 contracts
A$1,703,238
Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts5 contracts
A$1,513,055
Department of Finance4 contracts
A$1,461,126
Attorney-General's Department9 contracts
A$1,236,865
Department of Infrastructure, Transport, Regional Development, Communications and the Arts4 contracts
A$1,226,322
Department of Parliamentary Services6 contracts
A$1,043,104
Australian Federal Police5 contracts
A$918,511
Australian Bureau of Statistics2 contracts
A$910,000
Australian Maritime Safety Authority1 contract
A$693,000
Australian War Memorial1 contract
A$506,330
Bureau of Meteorology7 contracts
A$488,594
Department of Agriculture, Fisheries and Forestry5 contracts
A$457,514
Great Barrier Reef Marine Park Authority5 contracts
A$356,765
National Indigenous Australians Agency1 contract
A$285,588
Australian Radiation Protection and Nuclear Safety Agency4 contracts
A$219,180
Clean Energy Regulator1 contract
A$190,080
Department of the Treasury3 contracts
A$160,545
Australian Criminal Intelligence Commission1 contract
A$132,330
Royal Australian Mint2 contracts
A$80,553
Department of the Prime Minister and Cabinet1 contract
A$65,000
Australian Securities and Investments Commission1 contract
A$61,596
Australian Transaction Reports and Analysis Centre1 contract
A$37,400
Department of Veterans' Affairs2 contracts
A$33,905
National Anti-Corruption Commission1 contract
A$24,970

How the line is bought

by value, since 2024
53%limited tender
0of these to DOWNER DEFENCE SERVICES PTY LTD
Limited tender, no open approach to market845 contracts
A$1,764,449,019 · 52.6%
Open tender218 contracts
A$1,588,882,442 · 47.4%

Contracts reaching their end dates

Oct 2026 – October 2027
193contracts
A$717,769,955end by October 2027
60end in June 2027 · A$211M
47in agencies never served · A$33.9M
A$30.2M
A$45.6M
A$52.6M
A$76.6M
A$33.7M
A$106M
A$28.4M
A$50.4M
A$211M
A$35.6M
A$4.0M
A$43.7M
Oct 2625 contractsNov 2611 contractsDec 2646 contractsJan 275 contractsFeb 274 contractsMar 2714 contractsApr 273 contractsMay 2710 contractsJun 2760 contractsJul 279 contractsAug 275 contractsSep 271 contract

Fastest-growing supplier in the line

same line
+704%growth

90155020303

2024 to Sep 2026
A$555,252,448
2022–2023
A$69,022,410

The extract

Every buying office, every contract holder, value, number and end date behind the figures above.

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Source: AusTender Contract Notice Export, Department of Finance, Commonwealth of Australia, via data.gov.au, licensed under Creative Commons Attribution 3.0 Australia; accessed 25 September 2026.Assay Systems has changed the data.