Company lists · Data verified August 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 Verified Aug 28, 2026 3,950 companies tracked

There are 3,950 engineering consulting firms headquartered in Australia (RevenueBase, August 2026). RevenueBase 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. Data current as of August 28, 2026.

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 verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	GHD	Sydney	10001+	14,747	6,832
2	Rider Levett Bucknall RLB	Sydney	1,001-5,000	3,282	9
3	WSP In Australia	Canberra	10001+	3,138	1,936
4	Bouygues Travaux Publics	Sydney	10001+	1,861	669
5	Linesight	Melbourne	1,001-5,000	1,709	1,246
6	Lycopodium	Newcastle	1,001-5,000	1,132	636
7	Tonkin Taylor	Southbank	1,001-5,000	952	799
8	Robert Bird Group	Melbourne	501-1,000	871	340
9	Bg&e	North Adelaide	501-1,000	755	531
10	WT Australia	Newcastle	201-500	539	364
11	Northrop Consulting Engineers	Brisbane	501-1,000	521	429
12	FYFE	Alice Springs	501-1,000	471	272
13	Douglas Partners	Rouse Hill	501-1,000	465	340
14	RSGX	Wedgefield	1,001-5,000	450	247
15	Acor Consultants	Darwin City	501-1,000	429	257
16	Construction Sciences	Childers	1,001-5,000	423	300
17	NGI	Perth	201-500	421	220
18	Spiire	Brisbane	201-500	368	269
19	GPA Engineering	Berrimah	201-500	341	264
20	Umwelt Environmental & Social Consultants	Melbourne	201-500	326	234
21	Lucid Consulting Australia	Canberra	201-500	324	275
22	CMW Geosciences	Townsville	201-500	301	52
23	Woolpert Asia-Pacific	Fortitude Valley	1,001-5,000	291	116
24	ADG Engineers	Melbourne	201-500	287	193
25	2h Offshore	Melbourne	201-500	281	190

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 Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 410 HQs

5,876Contacts with mobile numbers

0Emails re-verified in last 30 days

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+

Engineering consulting firms by metro

Metro	Companies
Engineering consulting firms in Sydney	410
Engineering consulting firms in Melbourne	359
Engineering consulting firms in Brisbane	294
Engineering consulting firms in Perth	250
Engineering consulting firms in Adelaide	93
Engineering consulting firms in Gold Coast	49
Engineering consulting firms in Newcastle	49

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “engineering consulting firms”, with match quality audited by blind human judging, and headquartered in Australia.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many engineering consulting firms are there based in Australia?

There are 3,950 engineering consulting firms headquartered in Australia as of August 2026 (RevenueBase).

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 is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.