Company lists · Data refreshed October 2026

Top 25 Geotechnical contractors based in Australia

RevenueBase identified 1,932 company matches for geotechnical contractors associated with Australia as of October 2026 and tracks 30,960 professional contacts across them, including 10,616 with verified work emails. Sydney is the largest hub.

This list covers company matches for geotechnical contractors associated with Australia, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 13, 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 RevenueBase SmartSearch · Exact Recorded Oct 13, 2026 How this list was built
1,932Companies
30,960Contacts tracked
10,616Verified emails
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The 25 largest geotechnical contractors based in Australia

Ranked by team size
Top 25 of 1,932 company matches for geotechnical contractors based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 13, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPerth Airport, AustraliaHQ recorded Oct 13, 202610001+2,769 contacts →

Exact match

“Macmahon is a diversified contractor with leading capabilities in surface and underground mining, civil construction and resources engineering.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
2Exact matchBrisbane, AustraliaHQ recorded Oct 13, 2026501-1,000852 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
3Exact matchEssendon Fields, AustraliaHQ recorded Oct 13, 20261,001-5,000621 contacts →

Exact match

“Winslow has become one of Australia’s leading civil construction contractors with offices in Victoria, Queensland, Northen NSW and South Australia.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
4Exact matchWest Ryde, AustraliaHQ recorded Oct 13, 2026501-1,000484 contacts →

Exact match

“Welcome to Douglas Partners Pty Ltd, a leading engineering consultancy specialising in geotechnics, rock mechanics, environment, groundwater, earthworks and geophysics.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
5Exact matchAlbion, AustraliaHQ recorded Oct 13, 20261,001-5,000448 contacts →

Exact match

“Construction Sciences is a construction materials testing, geotechnical engineering, environmental consulting and specialised testing firm.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
6Exact matchForest Glen, AustraliaHQ recorded Oct 13, 2026501-1,000395 contacts →

Exact match

“Shadforth continues to grow based on our reputation of “delivering quality infrastructure sooner”.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
7Exact matchWelshpool, AustraliaHQ recorded Oct 13, 2026201-500352 contacts →

Exact match

“Minprovise are industry partners provide a total solutions package for mining, oil and gas, quarrying, and construction industries.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
8Exact matchNambour, AustraliaHQ recorded Oct 13, 20261,001-5,000276 contacts →

Exact match

“MacKellar Group is Australia's leading heavy equipment solutions provider.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
9Exact matchMacquarie Park, AustraliaHQ recorded Oct 13, 2026201-500236 contacts →

Exact match

“Freyssinet is a versatile contractor that offers innovative solutions spanning from design to implementation for Specialist Civil Engineering and Structure Remediation projects.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
10Exact matchNorth Ryde, AustraliaHQ recorded Oct 13, 202651-200214 contacts →

Exact match

“PSM provides specialised design and investigation services for engineering in rock, soil and water.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
11Exact matchRosebery, AustraliaHQ recorded Oct 13, 2026201-500207 contacts →

Exact match

“Geovert is a global ground engineering company founded in Christchurch, New Zealand in 2001.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
12Exact matchWayville, AustraliaHQ recorded Oct 13, 202651-200205 contacts →

Exact match

“FMG Engineering is an award winning multi-disciplinary Engineering Consultancy providing services and solutions to the development, property and urban infrastructure sectors.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
13Exact matchPerth, AustraliaHQ recorded Oct 13, 2026201-500204 contacts →

Exact match

“Austral Construction is an Australian engineering and construction contractor specialising in complex civil, marine and rail infrastructure.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
14Exact matchNunawading, AustraliaHQ recorded Oct 13, 2026201-500187 contacts →

Exact match

“Ace Contractors Group Pty.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
15Exact matchOsborne Park, AustraliaHQ recorded Oct 13, 2026201-500175 contacts →

Exact match

“Melchor offers an innovative and integrated approach to delivering large infrastructure and industrial projects in Perth Metro and remote locations.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
16Exact matchGladstone, AustraliaHQ recorded Oct 13, 2026201-500171 contacts →

Exact match

“McCosker have extensive experience delivering integrated civil construction projects, with expertise and vast experience in all aspects of bulk and detailed earthworks, structural…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
17Exact matchChatswood, AustraliaHQ recorded Oct 13, 202651-200169 contacts →

Exact match

“Avopiling is a proudly Australian owned and operated company.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
18Exact matchSydney, AustraliaHQ recorded Oct 13, 20261,001-5,000163 contacts →

Exact match

“BKH Group is a specialist in formwork, concrete placements and scaffolding for the commercial, industrial, civil engineering, mining and residential sectors.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
19Exact matchBuderim, AustraliaHQ recorded Oct 13, 202651-200163 contacts →

Exact match

“Hall Contracting is Australia’s largest privately-owned dredging, civil and marine construction company with offices in South East Asia, the Pacific Islands and Australia.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
20Exact matchMilton, AustraliaHQ recorded Oct 13, 2026201-500155 contacts →

Exact match

“Bielby is a wholly-owned and operated Queensland based civil engineering company providing leading earthworks and infrastructure capabilities to clients across Australia.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
21Exact matchAdelaide, AustraliaHQ recorded Oct 13, 2026501-1,000145 contacts →

Exact match

“Specializing in Mining and Civil construction, Lucas Total Contract Solutions ( TCS ) is privately owned and currently operates locally, regionally and nationally.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
22Exact matchLane Cove West, AustraliaHQ recorded Oct 13, 202651-200140 contacts →

Exact match

“Founded by the late Peter Ward in 1973, WARD is a multi-disciplined and full-service civil and environmental engineering contractor.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
23Exact matchBrisbane, AustraliaHQ recorded Oct 13, 202651-200139 contacts →

Exact match

“Wagstaff Piling is a specialist foundation engineering contractor.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
24Exact matchOsborne Park, AustraliaHQ recorded Oct 13, 2026201-500136 contacts →

Exact match

“Catalpa Group, established in 2009, has firmly cemented itself as one of the most well-known and respected civil, concrete and groundworks companies within the resources, energy…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
25Exact matchTomago, AustraliaHQ recorded Oct 13, 2026501-1,000124 contacts →

Exact match

“UGM is one of Australia’s leading underground mining contractors, providing a comprehensive range of services to the industry.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase

Showing 25 of 1,932 geotechnical contractors based in Australia

See the full list, filter by size, metro and specialty, and access 10,616 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geotechnical contractors based in Australia at a glance

As of Oct 13, 2026
34.3%Verified-email coverage
16.0Average contacts per company
11-50Median size (employees)
5.5%Largest-city concentration · Sydney
Oct 13, 2026Page data refreshed

Companies by employee count

1-10
758
11-50
785
51-200
314
201-500
43
501-1,000
10
1,001-5,000
6
10001+
1

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 1,932 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with Australia whose business descriptions match “geotechnical contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 10,616 professional contacts with verified work emails across the full matched dataset. 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 October 13, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “geotechnical contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geotechnical contractors are there based in Australia?

RevenueBase identified 1,932 company matches for geotechnical contractors associated with Australia as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Macmahon tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most geotechnical contractors?

Sydney leads with 107 company records, followed by Melbourne (94) and Perth (78).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 10,616 professional contacts with verified work emails tracked across these 1,932 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 13, 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.