Company lists · Data refreshed September 2026

Top 25 Infrastructure companies based in Sydney, Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 101 companies tracked

RevenueBase identified 101 infrastructure companies headquartered in Sydney, Australia as of September 2026 and tracks 5,143 professional contacts across them, including 2,712 with verified work emails. Sydney is the largest hub.

This list covers infrastructure companies headquartered in Sydney, 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

101Companies

5,143Contacts tracked

2,712Verified emails

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The 25 largest infrastructure companies based in Sydney, Australia

Ranked by team size

Top 25 of 101 infrastructure companies based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure 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	APA Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	1,001-5,000	2,679 contacts →
	Indirect evidence “At APA, we’re taking on one of Australia’s greatest challenges: the energy transition.” Source: RevenueBase Database · checked Sep 15, 2026
2	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
3	Connellgriffin	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	184 contacts →
	Strong evidence “ConnellGriffin is a commercial advisory firm operating within the infrastructure industry.” Source: RevenueBase Database · checked Sep 15, 2026
4	E3 Advisory	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	103 contacts →
	Strong evidence “E3 Advisory, now part of WSP, is a leading infrastructure advisory firm delivering independent, strategic advice across Australia’s infrastructure landscape.” Source: RevenueBase Database · checked Sep 15, 2026
5	Capella Capital	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	73 contacts →
	Strong evidence “Imagine more with Australia’s leading public infrastructure developer, financial advisor and asset manager Since 2009, Capella Capital, together with our partners, has secured…” Source: RevenueBase Database · checked Sep 15, 2026
6	Turnbull Engineering	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	73 contacts →
	Strong evidence “Turnbull is a select team of highly motivated engineering professionals specialising in the design of civil infrastructure, including transport, energy and water and mining assets.” Source: RevenueBase Database · checked Sep 15, 2026
7	Chalouhi	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	67 contacts →
	Indirect evidence “Chalouhi is a leading civil engineering and construction company with extensive experience in the industry.” Source: RevenueBase Database · checked Sep 15, 2026
8	Brefni	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	65 contacts →
	Strong evidence “Brefni delivers sustainable civil infrastructure across Australia's public and private sectors - on time, on budget, and built to last.” Source: RevenueBase Database · checked Sep 15, 2026
9	Burton Contractors PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	65 contacts →
	Indirect evidence “Burton Contractors is a multi-disciplined Civil Engineering Contractor approaching 200 employees and a fleet of more than 100 pieces of plant.” Source: RevenueBase Database · checked Sep 15, 2026
10	Waveconn	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	11-50	56 contacts →
	Strong evidence “Waveconn is an agile and flexible digital infrastructure business that is excited to play a role in the future of telecommunications.” Source: RevenueBase Database · checked Sep 15, 2026
11	Fibreconx	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	11-50	36 contacts →
	Strong evidence “Headline: Australia's Leading Wholesale-Only Dark Fibre Digital Infrastructure Provider About Us: At FibreconX, we are the backbone of AI Infrastructure with our state-of-the-art…” Source: RevenueBase Database · checked Sep 15, 2026
12	Transfield Holdings	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	36 contacts →
	Strong evidence “Transfield is a privately owned holding company with a portfolio of businesses focused on infrastructure, renewable energy and industrial services.” Source: RevenueBase Database · checked Sep 15, 2026
13	Specialised Force	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	35 contacts →
	Indirect evidence “Specialised Force Pty Ltd has been operating and expanding throughout Australia since 1982.” Source: RevenueBase Database · checked Sep 15, 2026
14	Elecnor Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	201-500	28 contacts →
	Indirect evidence “Elecnor Australia is a major player in the energy market in Australia, offering power generation and transmission services through large-scale projects such as solar farms, wind…” Source: RevenueBase Database · checked Sep 15, 2026
15	Infravue	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	11-50	17 contacts →
	Strong evidence “Infravue connects organisations to a wealth of expertise and knowledge to help inform them on their infrastructure investment decisions.” Source: RevenueBase Database · checked Sep 15, 2026
16	Bellgrove Advisory	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	11-50	16 contacts →
	Strong evidence “Bellgrove Advisory was established in 2013 as an independent infrastructure advisory consultancy with the aim of helping to build sustainable infrastructure that supports our…” Source: RevenueBase Database · checked Sep 15, 2026
17	Whyte Civil	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	15 contacts →
	Indirect evidence “Whyte Civil Pty Ltd is a civil construction company based in Sydney, Australia, delivering a comprehensive range of in-ground building services and civil construction along with…” Source: RevenueBase Database · checked Sep 15, 2026
18	Australian Utilities Management	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	14 contacts →
	Indirect evidence “Australian Utilities Management is a multi-disciplinary company with more than 20 years industry experience.” Source: RevenueBase Database · checked Sep 15, 2026
19	Antoun	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	14 contacts →
	Indirect evidence “We are an internationally diverse construction and engineering business that focuses on bringing advanced technologies and innovative solutions to our clients and the broader…” Source: RevenueBase Database · checked Sep 15, 2026
20	Scott Electrical Services	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	11-50	12 contacts →
	Strong evidence “Scott Electrical Services Pty Ltd is a Sydney based company that has been trading since 2004 and specialises in energy and electrical infrastructure projects around NSW and…” Source: RevenueBase Database · checked Sep 15, 2026
21	Civil Structures Studio	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	1-10	11 contacts →
	Indirect evidence “Civil Structures Studio (CSS) is a collaboration of passionate and experienced individuals who revel in delivering complex structural engineering projects.” Source: RevenueBase Database · checked Sep 15, 2026
22	Certus Projects	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	11-50	11 contacts →
	Strong evidence “Certus Projects is an engineering contractor with the infrastructure sector.” Source: RevenueBase Database · checked Sep 15, 2026
23	Ready Group	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	11-50	11 contacts →
	Strong evidence “At Ready Group, we are committed to building a sustainable future for Australia's growing infrastructure.” Source: RevenueBase Database · checked Sep 15, 2026
24	Avista Strategy	Strong evidence	Sydney, AustraliaHQ checked Sep 15, 2026	11-50	10 contacts →
	Strong evidence “We are a strategic consultancy for the infrastructure industry, born out of the sense that there was a better way.” Source: RevenueBase Database · checked Sep 15, 2026
25	MCE Management Commercial Engineering	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	11-50	9 contacts →
	Indirect evidence “MCE – Management • Commercial • Engineering was established in 2014 and is based in Sydney, Canberra, Queensland and Melbourne.” 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 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 companies.
Partial evidence: Its own public description names part of infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure 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 101 infrastructure companies based in Sydney, Australia

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Infrastructure companies based in Sydney, Australia at a glance

As of Sep 15, 2026

52.7%Verified-email coverage

50.9Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Sydney

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole Australia list rather than for Sydney, so it is reported there. Company counts and contact totals on this page are exact for Sydney, over 101 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 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 Sydney, Australia whose own description of what they do matches “infrastructure 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 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 companies, and records with no verified work email. Companies headquartered outside Sydney 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, 2,712 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 companies by metro in Australia

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 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 companies are there based in Sydney, Australia?

RevenueBase identified 101 infrastructure companies headquartered in Sydney, 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?

APA Group, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most infrastructure companies?

Sydney leads with 101 headquartered companies, followed by Melbourne (78) and Brisbane (50).

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 2,712 verified decision-maker contacts tracked across these 101 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.