Company lists · Data refreshed September 2026

Top 25 Geotechnical consulting firms based in Australia

Name: Geotechnical 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 1,225 companies tracked

RevenueBase identified 1,225 geotechnical consulting firms headquartered in Australia as of September 2026 and tracks 22,764 professional contacts across them, including 10,269 with verified work emails and 1,156 with mobile numbers. Sydney is the largest hub.

This list covers geotechnical 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 3, 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 3, 2026 86% judged on-target in blind review

1,225Companies

22,764Contacts tracked

10,269Verified emails

1,156Mobile numbers

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The 25 largest geotechnical consulting firms based in Australia

Ranked by team size

Top 25 of 1,225 geotechnical consulting firms based in Australia, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to geotechnical 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	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 3, 2026
2	Robert Bird Group	Indirect evidence	Melbourne, Australia	501-1,000	871 contacts →
	Indirect 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 3, 2026
3	Bg&e	Indirect evidence	North Adelaide, Australia	501-1,000	755 contacts →
	Indirect 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 3, 2026
4	FYFE	Indirect evidence	Alice Springs, Australia	501-1,000	471 contacts →
	Indirect evidence “Fyfe is an Australian professional services firm that delivers value through integrated engineering, environmental, planning and surveying services.” Source: RevenueBase Database · checked Sep 3, 2026
5	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 3, 2026
6	TTW	Partial evidence	North Sydney, Australia	201-500	463 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 3, 2026
7	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 3, 2026
8	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 3, 2026
9	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 3, 2026
10	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 3, 2026
11	Intera Incorporated	Partial evidence	Perth, Australia	201-500	261 contacts →
	Partial evidence “Established in 1974, INTERA is a geosciences and engineering consulting firm focused on providing water resources and supply, environmental, mining, radioactive waste isolation…” Source: RevenueBase Database · checked Sep 3, 2026
12	CPC Engineering	Indirect evidence	West Perth, Australia	201-500	229 contacts →
	Indirect evidence “A reputation built over 50 years of expertise and integrity, delivering engineering design, construction and maintenance services to the minerals resource sector.” Source: RevenueBase Database · checked Sep 3, 2026
13	PSM	Indirect evidence	Geelong, Australia	51-200	222 contacts →
	Indirect evidence “PSM provides specialised design and investigation services for engineering in rock, soil and water.” Source: RevenueBase Database · checked Sep 3, 2026
14	ATC Williams	Partial evidence	Newmarket, Australia	201-500	220 contacts →
	Partial evidence “ATC Williams is a consulting engineering company specialising in providing custom solutions for tailings, water, waste, and resource recovery projects.” Source: RevenueBase Database · checked Sep 3, 2026
15	FMG Engineering	Indirect evidence	Wayville, Australia	51-200	199 contacts →
	Indirect evidence “FMG Engineering is an award winning multi-disciplinary Engineering Consultancy providing services and solutions to the development, property and urban infrastructure sectors.” Source: RevenueBase Database · checked Sep 3, 2026
16	Edge Consulting Engineers	Indirect evidence	Tweed Heads South, Australia	51-200	177 contacts →
	Indirect evidence “We're an engineering consultancy, specialising in civil, geo-environmental and structural engineering.” Source: RevenueBase Database · checked Sep 3, 2026
17	MEC	Partial evidence	West Perth, Australia	51-200	162 contacts →
	Partial evidence “MEC is a leading global technical consulting firm dedicated to servicing the mining industry.” Source: RevenueBase Database · checked Sep 3, 2026
18	Avopiling Foundation Specialists	Indirect evidence	Chatswood, Australia	51-200	152 contacts →
	Indirect evidence “Avopiling is a proudly Australian owned and operated company.” Source: RevenueBase Database · checked Sep 3, 2026
19	Civil & Structural Engineering Consultants PVT LTD	Indirect evidence	Melbourne, Australia	201-500	152 contacts →
	Indirect evidence “Civil and Structural Engineering Consultants (Pvt) Ltd, more commonly known as ‘CSE Consultants’ is a state of the art Engineering consultancy firm comprising some of the…” Source: RevenueBase Database · checked Sep 3, 2026
20	Partum Engineering	Partial evidence	Hobart, Australia	201-500	150 contacts →
	Partial evidence “Partum is an Australian based company providing engineering design and project consulting advice.” Source: RevenueBase Database · checked Sep 3, 2026
21	VAN DER Meer Consulting	Partial evidence	Melbourne, Australia	51-200	136 contacts →
	Partial evidence “van der Meer Consulting is a leading engineering consultancy providing a diverse range of specialist structural and civil design services across multiple sectors.” Source: RevenueBase Database · checked Sep 3, 2026
22	Engeo NZ & AU	Strong evidence	Yatala, Australia	51-200	121 contacts →
	Strong evidence “ENGEO Ltd (formally Geoscience Consulting) is a specialist consultancy group providing Engineering Geological, Geophysical, Environmental and Geotechnical Engineering services.” Source: RevenueBase Database · checked Sep 3, 2026
23	Mining ONE Consultants	Partial evidence	Adelaide, Australia	51-200	117 contacts →
	Partial evidence “Mining One was established in August 2005 to provide technical expertise in the fields of geotechnical engineering, resource geology, mining engineering, processing, numerical…” Source: RevenueBase Database · checked Sep 3, 2026
24	Benthic - Utec	Partial evidence	Perth, Australia	51-200	115 contacts →
	Partial evidence “Benthic is a global leader in offshore marine geotechnical investigation, survey, analysis and design.” Source: RevenueBase Database · checked Sep 3, 2026
25	RED Earth Engineering A Geosyntec Company	Partial evidence	Spring Hill, Australia	51-200	114 contacts →
	Partial evidence “Red Earth Engineering (REE) is a specialist consultancy offering services in geotechnical, environmental and civil engineering with specialist application to Tailings Dams and…” Source: RevenueBase Database · checked Sep 3, 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: geotechnical 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 geotechnical consulting firms.
Partial evidence: Its own public description names part of geotechnical consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geotechnical 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 1,225 geotechnical consulting firms based in Australia

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Geotechnical consulting firms based in Australia at a glance

As of Sep 3, 2026

45.1%Verified-email coverage

5.1%Mobile-number coverage

18.6Average contacts per company

1-10Median size (employees)

7.4%Largest-city concentration · Sydney

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

706

11-50

373

51-200

103

201-500

501-1,000

1,001-5,000

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 geotechnical 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 “geotechnical 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 geotechnical 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 geotechnical 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, 10,269 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.

Geotechnical 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 geotechnical 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 geotechnical consulting firms are there based in Australia?

RevenueBase identified 1,225 geotechnical 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?

Tonkin Taylor, headquartered in Southbank, tops this list with the largest team on record.

Which city has the most geotechnical consulting firms?

Sydney leads with 91 headquartered companies, followed by Melbourne (79) and Brisbane (69).

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 10,269 verified decision-maker contacts tracked across these 1,225 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 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.