Company lists · Data refreshed September 2026

Top 25 Infrastructure conglomerates based in Australia

RevenueBase identified 859 company matches for infrastructure conglomerates associated with Australia as of September 2026 and tracks 75,395 professional contacts across them, including 20,980 with verified work emails. Sydney is the largest hub.

This list covers company matches for infrastructure conglomerates associated with Australia, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
859Companies
75,395Contacts tracked
20,980Verified emails
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The 25 largest infrastructure conglomerates based in Australia

Ranked by team size
Top 25 of 859 company matches for infrastructure conglomerates based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNorth Ryde, AustraliaHQ recorded Sep 20, 202610001+10,666 contacts →

Exact match

“Enabling communities to thrive.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchNorth Sydney, AustraliaHQ recorded Sep 20, 20265,001-10,0005,965 contacts →

Exact match

“UGL is CIMIC Group's specialist end-to-end engineering, services and operations provider.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchNorth Sydney, AustraliaHQ recorded Sep 20, 20265,001-10,0005,231 contacts →

Exact match

“SMEC is a global engineering, management and development consultancy with a 70-year history of delivering advanced solutions on a global scale across urban development…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchNorth Sydney, AustraliaHQ recorded Sep 20, 202610001+5,171 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchNorth Ryde, AustraliaHQ recorded Sep 20, 20265,001-10,0003,204 contacts →

Exact match

“Boral is the largest vertically-integrated construction materials company in Australia.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchPerth, AustraliaHQ recorded Sep 20, 20261,001-5,0002,289 contacts →

Exact match

“SRG Global is a diversified infrastructure services company.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchDocklands, AustraliaHQ recorded Sep 20, 20261,001-5,0001,823 contacts →

Exact match

“Service Stream plays a vital role, working with our clients in keeping communities connected to essential network services across Australia.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchEight Mile Plains, AustraliaHQ recorded Sep 20, 2026501-1,000818 contacts →

Exact match

“Seymour Whyte is a multi award-winning civil contractor that delivers major essential infrastructure across Australia.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchRichmond, AustraliaHQ recorded Sep 20, 2026501-1,000777 contacts →

Exact match

“Icon is a globally connected, integrated construction group trusted to build what matters most.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchBrisbane City, AustraliaHQ recorded Sep 20, 20261,001-5,000699 contacts →

Exact match

“DT Infrastructure is a fresh name in Australia’s construction industry.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchAdelaide, AustraliaHQ recorded Sep 20, 2026501-1,000586 contacts →

Exact match

“We like to think of ourselves as one of the leading Engineering and Project Management companies across Australia and New Zealand.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchRegents Park, AustraliaHQ recorded Sep 20, 2026501-1,000543 contacts →

Exact match

“Abergeldie is a locally owned contractor with 30 years industry experience in Australia and New Zealand.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchPort Melbourne, AustraliaHQ recorded Sep 20, 20261,001-5,000537 contacts →

Exact match

“Delta Group offer diversified and integrated contracting capabilities that shape the urban and industrial landscapes of tomorrow.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchRichmond, AustraliaHQ recorded Sep 20, 20265,001-10,000521 contacts →

Exact match

“For more than 125 years, Aveng has evolved in character, capacity and reach and continues to make its mark across the globe.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchNorth Sydney, AustraliaHQ recorded Sep 20, 2026201-500458 contacts →

Exact match

“Established in 1976 and listed on the Kuala Lumpur Stock Exchange (KLSE) in 1992, Gamuda delivers innovative world-class infrastructure, concessions and communities development.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchDoncaster, AustraliaHQ recorded Sep 20, 2026201-500441 contacts →

Exact match

“Nacap is a leading energy infrastructure contractor with four decades of global experience in delivering large-scale and complex energy infrastructure projects to power…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchAustraliaHQ recorded Sep 20, 20261,001-5,000360 contacts →

Exact match

“Martinus is an Australian owned, industry leading, full-service railway infrastructure company that builds and maintains large scale railways and intermodals across Australia, New…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchUnley, AustraliaHQ recorded Sep 20, 2026201-500346 contacts →

Exact match

“A highly experienced, multidisciplinary engineering and management firm, GPA has consulted and provided engineering, procurement and construction management (EPCM) services, since…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchMilton, AustraliaHQ recorded Sep 20, 2026501-1,000296 contacts →

Exact match

“Humes is a division of Holcim Australia and the nation's leading civil precast concrete manufacturer.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchToowong, AustraliaHQ recorded Sep 20, 2026201-500290 contacts →

Exact match

“ADG, proudly part of AtkinsRéalis since December 2025, combines decades of multi-sector experience with a diverse range of established and emerging engineering disciplines…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchMelbourne, AustraliaHQ recorded Sep 20, 2026201-500249 contacts →

Exact match

“Plenary is a leading developer, investor and manager of infrastructure and real assets, specialising in public-private partnerships, precinct developments and community…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchPerth, AustraliaHQ recorded Sep 20, 202651-200240 contacts →

Exact match

“ATCO's Australian operations are headquartered in Perth, Western Australia and specialises in creating innovative, customer focused energy and infrastructure solutions.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchNorth Sydney, AustraliaHQ recorded Sep 20, 2026201-500232 contacts →

Exact match

“SYSTRA ANZ is a world leading consulting and engineering firm specialising in transportation, security & technology.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchMacquarie Park, AustraliaHQ recorded Sep 20, 2026201-500220 contacts →

Exact match

“Freyssinet is a versatile contractor that offers innovative solutions spanning from design to implementation for Specialist Civil Engineering and Structure Remediation projects.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchMaroochydore, AustraliaHQ recorded Sep 20, 2026501-1,000213 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 859 infrastructure conglomerates based in Australia

See the full list, filter by size, metro and specialty, and access 20,980 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Infrastructure conglomerates based in Australia at a glance

As of Sep 20, 2026
27.8%Verified-email coverage
87.8Average contacts per company
11-50Median size (employees)
9.1%Largest-city concentration · Sydney
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
260
11-50
326
51-200
175
201-500
51
501-1,000
17
1,001-5,000
13
5,001-10,000
7
10001+
7

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 859 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Australia whose business descriptions match “infrastructure conglomerates” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 20,980 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “infrastructure conglomerates”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many infrastructure conglomerates are there based in Australia?

RevenueBase identified 859 company matches for infrastructure conglomerates associated with Australia as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Downer tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most infrastructure conglomerates?

Sydney leads with 78 company records, followed by Melbourne (73) and Brisbane (61).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 20,980 professional contacts with verified work emails tracked across these 859 companies; direct dials are available where recorded.

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.

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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 SmartSearch, 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.