Company lists · Data refreshed September 2026

Top 25 Engineering consulting firms based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 3,950 companies tracked

RevenueBase identified 3,950 engineering consulting firms headquartered in Australia as of September 2026 and tracks 94,384 professional contacts across them, including 40,924 with verified work emails and 5,876 with mobile numbers. Sydney is the largest hub.

This list covers engineering 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

3,950Companies

94,384Contacts tracked

40,924Verified emails

5,876Mobile numbers

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The 25 largest engineering consulting firms based in Australia

Ranked by team size

Top 25 of 3,950 engineering consulting firms based in Australia, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to engineering consulting firms: 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	GHD	Indirect evidence	Sydney, Australia	10001+	14,747 contacts →
	Indirect evidence “We are committed to addressing the world’s biggest challenges in the areas of water, energy and communities.” Source: RevenueBase Database · checked Sep 2, 2026
2	Rider Levett Bucknall RLB	Indirect evidence	Sydney, Australia	1,001-5,000	3,282 contacts →
	Indirect evidence “RLB.” Source: RevenueBase Database · checked Sep 2, 2026
3	WSP In Australia	Partial evidence	Canberra, Australia	10001+	3,138 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 2, 2026
4	Bouygues Travaux Publics	Indirect evidence	Sydney, Australia	10001+	1,861 contacts →
	Indirect evidence “CONSTRUIRE DES INFRASTRUCTURES DURABLES Bouygues TP est l’un des leaders mondiaux dans les domaines de l’aménagement du territoire et de la construction d’infrastructures durables.” Source: RevenueBase Database · checked Sep 2, 2026
5	Linesight	Indirect evidence	Melbourne, Australia	1,001-5,000	1,709 contacts →
	Indirect evidence “Linesight provides professional consultancy services, management support and strategic advice to the global construction industry.” Source: RevenueBase Database · checked Sep 2, 2026
6	Lycopodium	Partial evidence	Newcastle, Australia	1,001-5,000	1,132 contacts →
	Partial evidence “Lycopodium is an Australian headquartered engineering and project management consultancy which provides a complete range of services for the evaluation, development…” Source: RevenueBase Database · checked Sep 2, 2026
7	Tonkin Taylor	Indirect evidence	Southbank, Australia	1,001-5,000	952 contacts →
	Indirect evidence “At Tonkin + Taylor, we’re dedicated to creating and sustaining a better world together.” Source: RevenueBase Database · checked Sep 2, 2026
8	Robert Bird Group	Partial evidence	Melbourne, Australia	501-1,000	871 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 2, 2026
9	Bg&e	Partial evidence	North Adelaide, Australia	501-1,000	755 contacts →
	Partial evidence “BG & E is a civil and structural engineering consultancy, celebrated for our innovative, award-winning designs that prioritise practicality and constructability.” Source: RevenueBase Database · checked Sep 2, 2026
10	WT Australia	Indirect evidence	Newcastle, Australia	201-500	539 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 2, 2026
11	Northrop Consulting Engineers	Partial evidence	Brisbane, Australia	501-1,000	521 contacts →
	Partial evidence “We partner with builders, architects, project managers and developers to deliver pragmatic engineering solutions for the land and built environment.” Source: RevenueBase Database · checked Sep 2, 2026
12	FYFE	Partial evidence	Alice Springs, Australia	501-1,000	471 contacts →
	Partial evidence “Fyfe is an Australian professional services firm that delivers value through integrated engineering, environmental, planning and surveying services.” Source: RevenueBase Database · checked Sep 2, 2026
13	Douglas Partners	Partial evidence	Rouse Hill, Australia	501-1,000	465 contacts →
	Partial evidence “Welcome to Douglas Partners Pty Ltd, a leading engineering consultancy specialising in geotechnics, rock mechanics, environment, groundwater, earthworks and geophysics.” Source: RevenueBase Database · checked Sep 2, 2026
14	RSGX	Partial evidence	Wedgefield, Australia	1,001-5,000	450 contacts →
	Partial evidence “RSGx is a trusted partner, providing innovative mechanical and electrical construction and engineering solutions with a focus on powering energy transition.” Source: RevenueBase Database · checked Sep 2, 2026
15	Acor Consultants	Partial evidence	Darwin City, Australia	501-1,000	429 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 2, 2026
16	Construction Sciences	Strong evidence	Childers, Australia	1,001-5,000	423 contacts →
	Strong evidence “Construction Sciences is a construction materials testing, geotechnical engineering, environmental consulting and specialised testing firm.” Source: RevenueBase Database · checked Sep 2, 2026
17	NGI	Partial evidence	Perth, Australia	201-500	421 contacts →
	Partial evidence “NGI – The Norwegian Geotechnical Institute – is an independent research centre in the field of geotechnical engineering and the engineering geosciences.” Source: RevenueBase Database · checked Sep 2, 2026
18	Spiire	Indirect evidence	Brisbane, Australia	201-500	368 contacts →
	Indirect evidence “We are an integrated team of passionate civil engineers, landscape architects, surveyors, town planners, urban designers and water engineers providing specialist services to the…” Source: RevenueBase Database · checked Sep 2, 2026
19	GPA Engineering	Partial evidence	Berrimah, Australia	201-500	341 contacts →
	Partial evidence “A highly experienced, multidisciplinary engineering and management firm, GPA has consulted and provided engineering, procurement and construction management (EPCM) services, since…” Source: RevenueBase Database · checked Sep 2, 2026
20	Umwelt Environmental & Social Consultants	Indirect evidence	Melbourne, Australia	201-500	326 contacts →
	Indirect evidence “Umwelt has been trusted by clients and communities for over 30 years.” Source: RevenueBase Database · checked Sep 2, 2026
21	Lucid Consulting Australia	Indirect evidence	Canberra, Australia	201-500	324 contacts →
	Indirect evidence “At Lucid, our purpose is simple: creating a better world.” Source: RevenueBase Database · checked Sep 2, 2026
22	CMW Geosciences	Partial evidence	Townsville, Australia	201-500	301 contacts →
	Partial evidence “CMW Geosciences is a specialist geotechnical consultancy delivering first-class geotech engineering services throughout Australia and New Zealand.” Source: RevenueBase Database · checked Sep 2, 2026
23	Woolpert Asia-Pacific	Indirect evidence	Fortitude Valley, Australia	1,001-5,000	291 contacts →
	Indirect evidence “Woolpert Asia-Pacific embodies all that is Woolpert, with an added focus on this region of the world.” Source: RevenueBase Database · checked Sep 2, 2026
24	ADG Engineers	Partial evidence	Melbourne, Australia	201-500	287 contacts →
	Partial 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 2, 2026
25	2h Offshore	Partial evidence	Melbourne, Australia	201-500	281 contacts →
	Partial evidence “2H Offshore delivers leading-edge advanced systems engineering for all types of offshore structures in the oil and gas and renewable energy sectors.” Source: RevenueBase Database · checked Sep 2, 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: engineering consulting firms. 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 engineering consulting firms.
Partial evidence: Its own public description names part of engineering consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering consulting firms. 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 3,950 engineering consulting firms based in Australia

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Engineering consulting firms based in Australia at a glance

As of Sep 2, 2026

43.4%Verified-email coverage

6.2%Mobile-number coverage

23.9Average contacts per company

1-10Median size (employees)

10.4%Largest-city concentration · Sydney

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

2,230

11-50

1,197

51-200

357

201-500

501-1,000

1,001-5,000

10001+

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 engineering consulting firms, 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 “engineering consulting firms”. 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 engineering consulting firms), 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 engineering 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 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, 40,924 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 2, 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.

Engineering consulting firms 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 engineering consulting firms, 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 engineering consulting firms are there based in Australia?

RevenueBase identified 3,950 engineering 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 engineering consulting firms?

Sydney leads with 410 headquartered companies, followed by Melbourne (359) and Brisbane (294).

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 40,924 verified decision-maker contacts tracked across these 3,950 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 2, 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.