Australia · Commonwealth contract register · Supplier record

Caldwo Pty Ltd

Line: Environmental management (77100000)Register loaded to September 2026Compiled 6 October 2026

Caldwo Pty Ltd — Australia · Commonwealth contract register · Supplier record: 1 contracts, all years (A$467,170 · Sep 2025 – Sep 2025); A$467K since January 2024 (1 contract · 1 agency); 361st rank in the line (of 627 suppliers · 0.01%); 23 agencies never served (A$728M on the line without Caldwo Pty Ltd).

Assay record ASY-AU-12SUXZL0KW · Cite as: Assay Systems, “Caldwo Pty Ltd in the AusTender register”, https://assay-systems.com/register/au/caldwo-pty-ltd/

1
contracts, all years
A$467,170 · Sep 2025 – Sep 2025
A$467K
since January 2024
1 contract · 1 agency
361st
rank in the line
of 627 suppliers · 0.01%
23
agencies never served
A$728M on the line without Caldwo Pty Ltd

Own record by year

2025 onward
A$467K
20252026

Who buys from Caldwo Pty Ltd

since January 2024
1agencies
A$467Kpaid
100.0%top buyer
Department of Climate Change, Energy, the Environment and Water100.0%
A$467,170

The line

since January 2024
A$3.6Bline value
1,497contracts
24agencies
627suppliers
46.7%held by top ten

Environmental management (77100000)

A$1.1B
A$1.4B
A$1.0B
202420252026Jan–Sep
361stof 627 suppliers
A$467,170Caldwo Pty Ltd in the line
0.01%share of the line
0.0%of A$2,850,742,984 spent by Department of Climate Change, Energy, the Environment and Water

Agencies that buy the line and never bought from Caldwo Pty Ltd

23agencies
383contracts
A$728,004,777since January 2024
Department of Defence138 contracts
A$378,039,806
Department of Agriculture, Fisheries and Forestry117 contracts
A$126,298,341
Great Barrier Reef Marine Park Authority28 contracts
A$70,484,617
Department of Foreign Affairs and Trade - Australian Aid Program5 contracts
A$65,179,042
Department of Industry, Science and Resources11 contracts
A$44,361,071
Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts18 contracts
A$12,710,125
CSIRO6 contracts
A$9,161,409
Director of National Parks6 contracts
A$6,188,568
Bureau of Meteorology17 contracts
A$5,120,746
Sydney Harbour Federation Trust1 contract
A$3,080,207
Murray-Darling Basin Authority4 contracts
A$3,070,242
Department of Finance5 contracts
A$1,289,769
Department of Infrastructure, Transport, Regional Development, Communications and the Arts7 contracts
A$909,110
Department of Veterans' Affairs1 contract
A$751,124
Australian Submarine Agency3 contracts
A$307,280
National Environmental Protection Agency1 contract
A$299,762
Department of the Prime Minister and Cabinet5 contracts
A$234,778
Royal Australian Mint2 contracts
A$156,181
Attorney-General's Department2 contracts
A$145,382
Australian Signals Directorate2 contracts
A$143,000
Department of Parliamentary Services2 contracts
A$29,161
Department of Foreign Affairs and Trade1 contract
A$27,930
Department of Home Affairs1 contract
A$17,127

How the line is bought

by value, since 2024
6%limited tender
0of these to Caldwo Pty Ltd
Open tender1,245 contracts
A$3,348,891,175 · 93.6%
Limited tender, no open approach to market252 contracts
A$229,856,585 · 6.4%

Contracts reaching their end dates

Oct 2026 – October 2027
240contracts
A$1,148,994,718end by October 2027
60end in June 2027 · A$112M
106in agencies never served · A$309M
A$227M
A$549M
A$109M
A$18.5M
A$19.5M
A$22.2M
A$17.7M
A$1.2M
A$112M
A$61.3M
A$11.2M
Oct 2658 contractsNov 2613 contractsDec 2630 contractsJan 2722 contractsFeb 2723 contractsMar 2714 contractsApr 277 contractsMay 274 contractsJun 2760 contractsJul 274 contractsAug 275 contracts

Suppliers next to it in the line

since January 2024
Belsal Pty Ltd1 contract · 1 agency
A$477,100
UNIVERSITY OF THE SUNSHINE COAST1 contract · 1 agency
A$471,514
Caldwo Pty Ltd
A$467,170
Bidgee Murray Water Pty Ltd1 contract · 1 agency
A$451,750

All 627 suppliers in the line

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.