Company lists · Data refreshed September 2026

Top 25 Infrastructure development companies based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 525 companies tracked

RevenueBase identified 525 infrastructure development companies headquartered in Australia as of September 2026 and tracks 47,025 professional contacts across them, including 12,263 with verified work emails. Sydney is the largest hub.

This list covers infrastructure development 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 20, 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 20, 2026 86% judged on-target in blind review

525Companies

47,025Contacts tracked

12,263Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest infrastructure development companies based in Australia

Ranked by team size

Top 25 of 525 infrastructure development companies based in Australia, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure development 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 20, 2026	10001+	10,666 contacts →
	Indirect evidence “Enabling communities to thrive.” Source: RevenueBase Database · checked Sep 20, 2026
2	UGL	Indirect evidence	North Sydney, AustraliaHQ checked Sep 20, 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 20, 2026
3	Seymour Whyte	Partial evidence	Eight Mile Plains, AustraliaHQ checked Sep 20, 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 20, 2026
4	ICON	Indirect evidence	Richmond, AustraliaHQ checked Sep 20, 2026	501-1,000	777 contacts →
	Indirect evidence “Icon is a globally connected, integrated construction group trusted to build what matters most.” Source: RevenueBase Database · checked Sep 20, 2026
5	Winslow	Indirect evidence	Essendon Fields, AustraliaHQ checked Sep 20, 2026	1,001-5,000	580 contacts →
	Indirect 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 20, 2026
6	Abergeldie Complex Infrastructure	Indirect evidence	Regents Park, AustraliaHQ checked Sep 20, 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 20, 2026
7	Gamuda Australia	Strong evidence	North Sydney, AustraliaHQ checked Sep 20, 2026	201-500	458 contacts →
	Strong 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 20, 2026
8	Nacap PTY LTD	Partial evidence	Doncaster, AustraliaHQ checked Sep 20, 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 20, 2026
9	Shadforth	Partial evidence	Forest Glen, AustraliaHQ checked Sep 20, 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 20, 2026
10	Bildgroup	Indirect evidence	Campbellfield, AustraliaHQ checked Sep 20, 2026	501-1,000	291 contacts →
	Indirect evidence “We're BildGroup and we're built differently.” Source: RevenueBase Database · checked Sep 20, 2026
11	Plenary Group	Strong evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	201-500	249 contacts →
	Strong evidence “Plenary is a leading developer, investor and manager of infrastructure and real assets, specialising in public-private partnerships, precinct developments and community…” Source: RevenueBase Database · checked Sep 20, 2026
12	Freyssinet Australia	Indirect evidence	Macquarie Park, AustraliaHQ checked Sep 20, 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 20, 2026
13	ACE Contractors Group Pty. LTD	Indirect evidence	Nunawading, AustraliaHQ checked Sep 20, 2026	201-500	205 contacts →
	Indirect evidence “Ace Contractors Group Pty.” Source: RevenueBase Database · checked Sep 20, 2026
14	Pensar	Partial evidence	Hamilton, AustraliaHQ checked Sep 20, 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 20, 2026
15	Shamrock Civil Engineering	Partial evidence	Brisbane, AustraliaHQ checked Sep 20, 2026	51-200	185 contacts →
	Partial 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 20, 2026
16	Quickway	Partial evidence	Silverwater, AustraliaHQ checked Sep 20, 2026	201-500	176 contacts →
	Partial evidence “Since 2006 we have been delivering high quality work on transport and utilities infrastructure projects of varying complexity across Australia.” Source: RevenueBase Database · checked Sep 20, 2026
17	Mccosker Contracting PTY LTD	Indirect evidence	Gladstone, AustraliaHQ checked Sep 20, 2026	201-500	163 contacts →
	Indirect evidence “McCosker have extensive experience delivering integrated civil construction projects, with expertise and vast experience in all aspects of bulk and detailed earthworks, structural…” Source: RevenueBase Database · checked Sep 20, 2026
18	Melchor	Partial evidence	Osborne Park, AustraliaHQ checked Sep 20, 2026	201-500	160 contacts →
	Partial evidence “Melchor offers an innovative and integrated approach to delivering large infrastructure and industrial projects in Perth Metro and remote locations.” Source: RevenueBase Database · checked Sep 20, 2026
19	LEED	Partial evidence	Kent Town, AustraliaHQ checked Sep 20, 2026	201-500	133 contacts →
	Partial evidence “Leed is a dynamic, award-winning, privately-owned multi-disciplinary engineering and construction company, specialising in complex infrastructure projects.” Source: RevenueBase Database · checked Sep 20, 2026
20	Robson Civil Projects	Indirect evidence	Somersby, AustraliaHQ checked Sep 20, 2026	201-500	132 contacts →
	Indirect evidence “Robson Civil Projects Pty Ltd is a privately owned business with a solid reputation that has been in operation for over 60 years.” Source: RevenueBase Database · checked Sep 20, 2026
21	Civil Infrastructure Group	Partial evidence	Campbellfield, AustraliaHQ checked Sep 20, 2026	51-200	99 contacts →
	Partial evidence “Civil Infrastructure Group (CIG) was formed in 2016 to provide specialist construction services to the civil infrastructure industry in Victoria.” Source: RevenueBase Database · checked Sep 20, 2026
22	CMP Consulting Group	Indirect evidence	Mulgrave, AustraliaHQ checked Sep 20, 2026	51-200	94 contacts →
	Indirect evidence “CMP Consulting Group is a multi-disciplinary Engineering firm specialising in design, project management and construction phase services for the Water Industry.” Source: RevenueBase Database · checked Sep 20, 2026
23	JAYDO	Partial evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	51-200	85 contacts →
	Partial evidence “Jaydo is a dedicated water infrastructure construction business where every member of our experienced team is committed to delivering outstanding value and service to our many…” Source: RevenueBase Database · checked Sep 20, 2026
24	Civcon Civil And Project Management	Indirect evidence	Subiaco, AustraliaHQ checked Sep 20, 2026	51-200	83 contacts →
	Indirect evidence “Civcon are a Western Australian Civil Construction and Project Management company.” Source: RevenueBase Database · checked Sep 20, 2026
25	TSA Management	Partial evidence	AustraliaHQ checked Sep 20, 2026	501-1,000	81 contacts →
	Partial evidence “We are a group of people who manage, consult and partner with industry professionals to radically improve public and private utilities and infrastructure through projects both big…” Source: RevenueBase Database · checked Sep 20, 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 development 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 development companies.
Partial evidence: Its own public description names part of infrastructure development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure development 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 525 infrastructure development companies based in Australia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 12,263 reachable decision-makers.

Free signup · no credit card

View the full list →

Infrastructure development companies based in Australia at a glance

As of Sep 20, 2026

26.1%Verified-email coverage

89.6Average contacts per company

11-50Median size (employees)

8.4%Largest-city concentration · Sydney

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

150

11-50

201

51-200

129

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 525 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 development 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 development 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 development 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 development 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, 12,263 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 20, 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 development companies by metro

Infrastructure development companies in Sydney44
Infrastructure development companies in Melbourne41

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 development 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 development companies are there based in Australia?

RevenueBase identified 525 infrastructure development 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 development companies?

Sydney leads with 44 headquartered companies, followed by Melbourne (41) and Brisbane (24).

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 12,263 verified decision-maker contacts tracked across these 525 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 525 infrastructure development companies based in Australia. Start with a free account, no credit card.

Download this list →

Related lists

Infrastructure development companies by geography

Browse the directory

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.