Company lists · Data refreshed September 2026

Top 25 Infrastructure construction companies based in Australia

Name: Infrastructure construction companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 1,113 companies tracked

RevenueBase identified 1,113 infrastructure construction companies headquartered in Australia as of September 2026 and tracks 70,444 professional contacts across them, including 20,297 with verified work emails. Sydney is the largest hub.

This list covers infrastructure construction companies headquartered in Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 15, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 15, 2026 86% judged on-target in blind review

1,113Companies

70,444Contacts tracked

20,297Verified emails

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The 25 largest infrastructure construction companies based in Australia

Ranked by team size

Top 25 of 1,113 infrastructure construction companies based in Australia, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure construction companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Downer	Indirect evidence	North Ryde, AustraliaHQ checked Sep 15, 2026	10001+	10,666 contacts →
	Indirect evidence “Enabling communities to thrive.” Source: RevenueBase Database · checked Sep 15, 2026
2	UGL	Indirect evidence	North Sydney, AustraliaHQ checked Sep 15, 2026	5,001-10,000	5,965 contacts →
	Indirect evidence “UGL is CIMIC Group's specialist end-to-end engineering, services and operations provider.” Source: RevenueBase Database · checked Sep 15, 2026
3	CPB Contractors	Partial evidence	North Sydney, AustraliaHQ checked Sep 15, 2026	10001+	5,171 contacts →
	Partial evidence “CPB Contractors is a leading major contractor, trusted to build critical and complex infrastructure across Australia and New Zealand for a more connected, sustainable future.” Source: RevenueBase Database · checked Sep 15, 2026
4	BORAL	Partial evidence	North Ryde, AustraliaHQ checked Sep 15, 2026	5,001-10,000	3,204 contacts →
	Partial evidence “Boral is the largest vertically-integrated construction materials company in Australia.” Source: RevenueBase Database · checked Sep 15, 2026
5	SRG Global	Partial evidence	Perth, AustraliaHQ checked Sep 15, 2026	1,001-5,000	2,289 contacts →
	Partial evidence “SRG Global is a diversified infrastructure services company.” Source: RevenueBase Database · checked Sep 15, 2026
6	Seymour Whyte	Partial evidence	Eight Mile Plains, AustraliaHQ checked Sep 15, 2026	501-1,000	818 contacts →
	Partial evidence “Seymour Whyte is a multi award-winning civil contractor that delivers major essential infrastructure across Australia.” Source: RevenueBase Database · checked Sep 15, 2026
7	Georgiou	Partial evidence	Wa \| Qld \| Nsw \| Nt, AustraliaHQ checked Sep 15, 2026	501-1,000	810 contacts →
	Partial evidence “Georgiou is a proudly Australian founded civil and building construction company with a reputation for excellence in delivering complex, multi-disciplined projects.” Source: RevenueBase Database · checked Sep 15, 2026
8	ICON	Partial evidence	Richmond, AustraliaHQ checked Sep 15, 2026	501-1,000	777 contacts →
	Partial evidence “Icon is a globally connected, integrated construction group trusted to build what matters most.” Source: RevenueBase Database · checked Sep 15, 2026
9	DT Infrastructure	Strong evidence	Brisbane City, AustraliaHQ checked Sep 15, 2026	1,001-5,000	699 contacts →
	Strong evidence “DT Infrastructure is a fresh name in Australia’s construction industry.” Source: RevenueBase Database · checked Sep 15, 2026
10	Winslow	Partial evidence	Essendon Fields, AustraliaHQ checked Sep 15, 2026	1,001-5,000	580 contacts →
	Partial evidence “Winslow has become one of Australia’s leading civil construction contractors with offices in Victoria, Queensland, Northen NSW and South Australia.” Source: RevenueBase Database · checked Sep 15, 2026
11	Symal Group	Partial evidence	South Melbourne, AustraliaHQ checked Sep 15, 2026	1,001-5,000	563 contacts →
	Partial evidence “We’ve always been a construction company that believes in driving positive change – for clients, the communities we work in, and of course, our people – wherever they are in…” Source: RevenueBase Database · checked Sep 15, 2026
12	Abergeldie Complex Infrastructure	Indirect evidence	Regents Park, AustraliaHQ checked Sep 15, 2026	501-1,000	543 contacts →
	Indirect evidence “Abergeldie is a locally owned contractor with 30 years industry experience in Australia and New Zealand.” Source: RevenueBase Database · checked Sep 15, 2026
13	Hanson Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	5,001-10,000	459 contacts →
	Indirect evidence “Hanson Australia is now Heidelberg Materials.” Source: RevenueBase Database · checked Sep 15, 2026
14	Gamuda Australia	Partial evidence	North Sydney, AustraliaHQ checked Sep 15, 2026	201-500	458 contacts →
	Partial evidence “Established in 1976 and listed on the Kuala Lumpur Stock Exchange (KLSE) in 1992, Gamuda delivers innovative world-class infrastructure, concessions and communities development.” Source: RevenueBase Database · checked Sep 15, 2026
15	Nacap PTY LTD	Partial evidence	Doncaster, AustraliaHQ checked Sep 15, 2026	201-500	441 contacts →
	Partial evidence “Nacap is a leading energy infrastructure contractor with four decades of global experience in delivering large-scale and complex energy infrastructure projects to power…” Source: RevenueBase Database · checked Sep 15, 2026
16	Shadforth	Partial evidence	Forest Glen, AustraliaHQ checked Sep 15, 2026	501-1,000	388 contacts →
	Partial evidence “Shadforth continues to grow based on our reputation of “delivering quality infrastructure sooner”.” Source: RevenueBase Database · checked Sep 15, 2026
17	HUMES	Indirect evidence	Milton, AustraliaHQ checked Sep 15, 2026	501-1,000	296 contacts →
	Indirect evidence “Humes is a division of Holcim Australia and the nation's leading civil precast concrete manufacturer.” Source: RevenueBase Database · checked Sep 15, 2026
18	ADG Engineers	Indirect evidence	Toowong, AustraliaHQ checked Sep 15, 2026	201-500	290 contacts →
	Indirect evidence “ADG, proudly part of AtkinsRéalis since December 2025, combines decades of multi-sector experience with a diverse range of established and emerging engineering disciplines…” Source: RevenueBase Database · checked Sep 15, 2026
19	Daracon Group	Partial evidence	Beresfield, AustraliaHQ checked Sep 15, 2026	501-1,000	275 contacts →
	Partial evidence “Daracon Group has a history of quality and strong performance across a broad range of construction activities including road, rail, concrete structures, landscaping, quarrying…” Source: RevenueBase Database · checked Sep 15, 2026
20	Freyssinet Australia	Indirect evidence	Macquarie Park, AustraliaHQ checked Sep 15, 2026	201-500	220 contacts →
	Indirect evidence “Freyssinet is a versatile contractor that offers innovative solutions spanning from design to implementation for Specialist Civil Engineering and Structure Remediation projects.” Source: RevenueBase Database · checked Sep 15, 2026
21	Whittens	Strong evidence	Maroochydore, AustraliaHQ checked Sep 15, 2026	501-1,000	213 contacts →
	Strong evidence “As a specialist infrastructure, construction and services contractor, Whittens provides clients with a single source solution at every stage of the construction cycle, from early…” Source: RevenueBase Database · checked Sep 15, 2026
22	ACE Contractors Group Pty. LTD	Indirect evidence	Nunawading, AustraliaHQ checked Sep 15, 2026	201-500	205 contacts →
	Indirect evidence “Ace Contractors Group Pty.” Source: RevenueBase Database · checked Sep 15, 2026
23	Pensar	Partial evidence	Hamilton, AustraliaHQ checked Sep 15, 2026	201-500	198 contacts →
	Partial evidence “We offer insightful, original design thinking, implemented by a team with proven expertise to deliver flexible fit-for-purpose critical infrastructure solutions.” Source: RevenueBase Database · checked Sep 15, 2026
24	Total AMS	Indirect evidence	North Fremantle, AustraliaHQ checked Sep 15, 2026	201-500	198 contacts →
	Indirect evidence “For more than 25 years, TAMS has partnered with clients through collaborative delivery models, applying specialist expertise to construct and maintain critical marine and port…” Source: RevenueBase Database · checked Sep 15, 2026
25	Shamrock Civil Engineering	Strong evidence	Brisbane, AustraliaHQ checked Sep 15, 2026	51-200	185 contacts →
	Strong evidence “Shamrock Civil is a privately owned civil construction company, delivering services to the Defence & Government sectors, gas and mining, transport infrastructure and commercial.” Source: RevenueBase Database · checked Sep 15, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: infrastructure construction companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names infrastructure construction companies.
Partial evidence: Its own public description names part of infrastructure construction companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure construction companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,113 infrastructure construction companies based in Australia

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Infrastructure construction companies based in Australia at a glance

As of Sep 15, 2026

28.8%Verified-email coverage

63.3Average contacts per company

11-50Median size (employees)

6.9%Largest-city concentration · Sydney

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

295

11-50

471

51-200

253

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 1,113 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among infrastructure construction companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “infrastructure construction companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names infrastructure construction companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among infrastructure construction companies, and records with no verified work email. Companies headquartered outside Australia are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 20,297 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 15, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Infrastructure construction companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names infrastructure construction companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many infrastructure construction companies are there based in Australia?

RevenueBase identified 1,113 infrastructure construction companies headquartered in Australia as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Downer, headquartered in North Ryde, tops this list with the largest team on record.

Which city has the most infrastructure construction companies?

Sydney leads with 77 headquartered companies, followed by Melbourne (68) and Brisbane (41).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 20,297 verified decision-maker contacts tracked across these 1,113 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 15, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.