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, 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

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. Evidence rates how directly each company's own description names geotechnical 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	Tonkin TaylorIndirect evidence	Southbank, Australia	1,001-5,000	952
	“At Tonkin + Taylor, we’re dedicated to creating and sustaining a better world together.” Source: company website · checked Sep 3, 2026
2	Robert Bird GroupIndirect evidence	Melbourne, Australia	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
3	Bg&eIndirect evidence	North Adelaide, Australia	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
4	FYFEIndirect evidence	Alice Springs, Australia	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
5	Douglas PartnersPartial evidence	Rouse Hill, Australia	501-1,000	465
	“Welcome to Douglas Partners Pty Ltd, a leading engineering consultancy specialising in geotechnics, rock mechanics, environment, groundwater, earthworks and geophysics.” Source: company website · checked Sep 3, 2026
6	TTWPartial evidence	North Sydney, Australia	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
7	Acor ConsultantsPartial evidence	Darwin City, Australia	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
8	Construction SciencesStrong evidence	Childers, Australia	1,001-5,000	423
	“Construction Sciences is a construction materials testing, geotechnical engineering, environmental consulting and specialised testing firm.” Source: company website · checked Sep 3, 2026
9	NGIPartial evidence	Perth, Australia	201-500	421
	“NGI – The Norwegian Geotechnical Institute – is an independent research centre in the field of geotechnical engineering and the engineering geosciences.” Source: company website · checked Sep 3, 2026
10	CMW GeosciencesPartial evidence	Townsville, Australia	201-500	301
	“CMW Geosciences is a specialist geotechnical consultancy delivering first-class geotech engineering services throughout Australia and New Zealand.” Source: company website · checked Sep 3, 2026
11	Intera IncorporatedPartial evidence	Perth, Australia	201-500	261
	“Established in 1974, INTERA is a geosciences and engineering consulting firm focused on providing water resources and supply, environmental, mining, radioactive waste isolation…” Source: company website · checked Sep 3, 2026
12	CPC EngineeringIndirect evidence	West Perth, Australia	201-500	229
	“A reputation built over 50 years of expertise and integrity, delivering engineering design, construction and maintenance services to the minerals resource sector.” Source: company website · checked Sep 3, 2026
13	PSMIndirect evidence	Geelong, Australia	51-200	222
	“PSM provides specialised design and investigation services for engineering in rock, soil and water.” Source: company website · checked Sep 3, 2026
14	ATC WilliamsPartial evidence	Newmarket, Australia	201-500	220
	“ATC Williams is a consulting engineering company specialising in providing custom solutions for tailings, water, waste, and resource recovery projects.” Source: company website · checked Sep 3, 2026
15	FMG EngineeringIndirect evidence	Wayville, Australia	51-200	199
	“FMG Engineering is an award winning multi-disciplinary Engineering Consultancy providing services and solutions to the development, property and urban infrastructure sectors.” Source: company website · checked Sep 3, 2026
16	Edge Consulting EngineersIndirect evidence	Tweed Heads South, Australia	51-200	177
	“We're an engineering consultancy, specialising in civil, geo-environmental and structural engineering.” Source: company website · checked Sep 3, 2026
17	MECPartial evidence	West Perth, Australia	51-200	162
	“MEC is a leading global technical consulting firm dedicated to servicing the mining industry.” Source: company website · checked Sep 3, 2026
18	Avopiling Foundation SpecialistsIndirect evidence	Chatswood, Australia	51-200	152
	“Avopiling is a proudly Australian owned and operated company.” Source: company website · checked Sep 3, 2026
19	Civil & Structural Engineering Consultants PVT LTDIndirect evidence	Melbourne, Australia	201-500	152
	“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: company website · checked Sep 3, 2026
20	Partum EngineeringPartial evidence	Hobart, Australia	201-500	150
	“Partum is an Australian based company providing engineering design and project consulting advice.” Source: company website · checked Sep 3, 2026
21	VAN DER Meer ConsultingPartial evidence	Melbourne, Australia	51-200	136
	“van der Meer Consulting is a leading engineering consultancy providing a diverse range of specialist structural and civil design services across multiple sectors.” Source: company website · checked Sep 3, 2026
22	Engeo NZ & AUStrong evidence	Yatala, Australia	51-200	121
	“ENGEO Ltd (formally Geoscience Consulting) is a specialist consultancy group providing Engineering Geological, Geophysical, Environmental and Geotechnical Engineering services.” Source: company website · checked Sep 3, 2026
23	Mining ONE ConsultantsPartial evidence	Adelaide, Australia	51-200	117
	“Mining One was established in August 2005 to provide technical expertise in the fields of geotechnical engineering, resource geology, mining engineering, processing, numerical…” Source: company website · checked Sep 3, 2026
24	Benthic - UtecPartial evidence	Perth, Australia	51-200	115
	“Benthic is a global leader in offshore marine geotechnical investigation, survey, analysis and design.” Source: company website · checked Sep 3, 2026
25	RED Earth Engineering A Geosyntec CompanyPartial evidence	Spring Hill, Australia	51-200	114
	“Red Earth Engineering (REE) is a specialist consultancy offering services in geotechnical, environmental and civil engineering with specialist application to Tailings Dams and…” Source: company website · checked Sep 3, 2026

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

1-10Median size (employees)

SydneyLargest hub · 91 HQs

1,156Contacts with mobile numbers

Sep 3, 2026Data 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 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 “geotechnical 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 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 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, 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

Geotechnical consulting firms in Sydney91
Geotechnical consulting firms in Melbourne79
Geotechnical consulting firms in Brisbane69
Geotechnical consulting firms in Perth67
Geotechnical consulting firms in Adelaide25

Frequently asked

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 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.