Company lists · Data refreshed September 2026

Top 24 Infrastructure consulting firms based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 2,175 companies tracked

RevenueBase identified 2,175 infrastructure consulting firms headquartered in Australia as of September 2026 and tracks 82,168 professional contacts across them, including 32,984 with verified work emails and 5,135 with mobile numbers. Sydney is the largest hub.

This list covers infrastructure consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

2,175Companies

82,168Contacts tracked

32,984Verified emails

5,135Mobile numbers

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The 24 largest infrastructure consulting firms based in Australia

Ranked by team size

Top 24 of 2,175 infrastructure consulting firms based in Australia, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names infrastructure consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	GHDIndirect evidence	Sydney, AustraliaHQ checked Sep 3, 2026	10001+	14,747
	“We are committed to addressing the world’s biggest challenges in the areas of water, energy and communities.” Source: company website · checked Sep 3, 2026
2	DownerIndirect evidence	North Ryde, AustraliaHQ checked Sep 3, 2026	10001+	10,759
	“Enabling communities to thrive.” Source: company website · checked Sep 3, 2026
3	UGLIndirect evidence	North Sydney, AustraliaHQ checked Sep 3, 2026	5,001-10,000	6,022
	“UGL is CIMIC Group's specialist end-to-end engineering, services and operations provider.” Source: company website · checked Sep 3, 2026
4	SMECIndirect evidence	North Sydney, AustraliaHQ checked Sep 3, 2026	5,001-10,000	5,294
	“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…” Source: company website · checked Sep 3, 2026
5	Rider Levett Bucknall RLBIndirect evidence	Sydney, Australia	1,001-5,000	3,282
	“RLB.” Source: company website · checked Sep 3, 2026
6	WSP In AustraliaIndirect evidence	Sydney, AustraliaHQ checked Sep 3, 2026	10001+	3,138
	“We are one of the world’s leading professional services firms, uniting our engineering, advisory and science-based expertise to shape communities to advance humanity.” Source: company website · checked Sep 3, 2026
7	LycopodiumIndirect evidence	Perth, AustraliaHQ checked Sep 3, 2026	1,001-5,000	1,132
	“Lycopodium is an Australian headquartered engineering and project management consultancy which provides a complete range of services for the evaluation, development…” Source: company website · checked Sep 3, 2026
8	Robert Bird GroupIndirect evidence	Brisbane, AustraliaHQ checked Sep 3, 2026	501-1,000	871
	“Robert Bird Group (RBG), member of the Surbana Jurong Group, is a specialist structural, civil and construction engineering consultancy with over 800 employees across 12 offices…” Source: company website · checked Sep 3, 2026
9	Bg&eIndirect evidence	Millers Point, AustraliaHQ checked Sep 3, 2026	501-1,000	755
	“BG & E is a civil and structural engineering consultancy, celebrated for our innovative, award-winning designs that prioritise practicality and constructability.” Source: company website · checked Sep 3, 2026
10	Sinclair Knight MerzIndirect evidence	St Leonards, AustraliaHQ checked Sep 3, 2026	5,001-10,000	613
	“Sinclair Knight Merz was acquired by Jacobs in 2013.” Source: company website · checked Sep 3, 2026
11	WT AustraliaIndirect evidence	Sydney, AustraliaHQ checked Sep 3, 2026	201-500	539
	“At WT, we empower our clients to grow, inspiring confidence through independent advice and inventive thinking to create sustainable value across all aspects of the built…” Source: company website · checked Sep 3, 2026
12	FYFEIndirect evidence	Adelaide, AustraliaHQ checked Sep 3, 2026	501-1,000	471
	“Fyfe is an Australian professional services firm that delivers value through integrated engineering, environmental, planning and surveying services.” Source: company website · checked Sep 3, 2026
13	TTWPartial evidence	North Sydney, AustraliaHQ checked Sep 3, 2026	201-500	463
	“As award-winning consulting engineers, for over 65 years we’ve partnered with architects, developers, builders and project managers to tackle the most complex projects and…” Source: company website · checked Sep 3, 2026
14	Gamuda AustraliaPartial evidence	North Sydney, AustraliaHQ checked Sep 3, 2026	201-500	455
	“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: company website · checked Sep 3, 2026
15	Acor ConsultantsPartial evidence	Sydney, AustraliaHQ checked Sep 3, 2026	501-1,000	429
	“Founded in 1997, ACOR Consultants began as a group of engineers with a unique set of personal and professional values providing specialist consulting services.” Source: company website · checked Sep 3, 2026
16	GPA EngineeringIndirect evidence	Unley, AustraliaHQ checked Sep 3, 2026	201-500	341
	“A highly experienced, multidisciplinary engineering and management firm, GPA has consulted and provided engineering, procurement and construction management (EPCM) services, since…” Source: company website · checked Sep 3, 2026
17	Umwelt Environmental & Social ConsultantsIndirect evidence	Teralba, AustraliaHQ checked Sep 3, 2026	201-500	326
	“Umwelt has been trusted by clients and communities for over 30 years.” Source: company website · checked Sep 3, 2026
18	Lucid Consulting AustraliaIndirect evidence	Adelaide, AustraliaHQ checked Sep 3, 2026	201-500	324
	“At Lucid, our purpose is simple: creating a better world.” Source: company website · checked Sep 3, 2026
19	Egis In ANZPartial evidence	Melbourne, AustraliaHQ checked Sep 3, 2026	10001+	319
	“Egis is an international player active in architecture, consulting, construction engineering and mobility services.” Source: company website · checked Sep 3, 2026
20	Pitt&sherryIndirect evidence	Melbourne, AustraliaHQ checked Sep 3, 2026	201-500	315
	“pitt & sherry is an Australian-owned engineering and environmental consultancy.” Source: company website · checked Sep 3, 2026
21	Woolpert Asia-PacificIndirect evidence	Sydney, AustraliaHQ checked Sep 3, 2026	1,001-5,000	291
	“Woolpert Asia-Pacific embodies all that is Woolpert, with an added focus on this region of the world.” Source: company website · checked Sep 3, 2026
22	ADG EngineersIndirect evidence	Toowong, AustraliaHQ checked Sep 3, 2026	201-500	287
	“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: company website · checked Sep 3, 2026
23	RP InfrastructurePartial evidence	Sydney, AustraliaHQ checked Sep 3, 2026	201-500	272
	“RP Infrastructure is one of Australia’s largest independent property and infrastructure consultancies, now incorporating DCWC.” Source: company website · checked Sep 3, 2026
24	EnturaPartial evidence	Hobart, AustraliaHQ checked Sep 3, 2026	201-500	272
	“Entura is one of the world’s most experienced specialist power and water consulting firms.” Source: company website · checked Sep 3, 2026

Showing 24 of 2,175 infrastructure consulting firms based in Australia

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Infrastructure consulting firms based in Australia at a glance

As of Sep 3, 2026

1-10Median size (employees)

SydneyLargest hub · 340 HQs

5,135Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

1,285

11-50

619

51-200

189

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

31–60

2,843

61–90

19,183

90–180

10,741

180+

217

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 consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among infrastructure consulting firms, 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 an evidence 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, 32,984 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 3, 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 consulting firms by metro

Frequently asked

How many infrastructure consulting firms are there based in Australia?

RevenueBase identified 2,175 infrastructure consulting firms 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?

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

Which city has the most infrastructure consulting firms?

Sydney leads with 340 headquartered companies, followed by Melbourne (243) and Brisbane (194).

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 32,984 verified decision-maker contacts tracked across these 2,175 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 3, 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.