Company lists · Data refreshed November 2026

Top 25 Subsurface investigation firms based in Australia

RevenueBase identified 205 company matches for subsurface investigation firms associated with Australia as of November 2026 and tracks 3,227 professional contacts across them, including 1,638 with verified work emails. Perth is the largest hub.

This list covers company matches for subsurface investigation firms 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 November 6, 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 Nov 6, 2026 How this list was built
205Companies
3,227Contacts tracked
1,638Verified emails
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The 25 largest subsurface investigation firms based in Australia

Ranked by team size
Top 25 of 205 company matches for subsurface investigation firms based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchAlbion, AustraliaHQ recorded Nov 6, 20261,001-5,000465 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchNorth Ryde, AustraliaHQ recorded Nov 6, 202651-200220 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchSeven Hills, AustraliaHQ recorded Nov 6, 202651-200126 contacts →

Exact match

“Alliance Geotechnical is an established and highly respected Geotechnical and Environmental consultancy firm with a proven track record in delivering and exceeding our client’s…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBathurst, AustraliaHQ recorded Nov 6, 202651-200116 contacts →

Exact match

“Macquarie Geotechnical is a leading provider of geotechnical services, supporting the construction, government, mining, renewable energy, groundwater, and environmental sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchKogarah, AustraliaHQ recorded Nov 6, 202651-20099 contacts →

Exact match

“Geosurv is a modern, integrated geospatial business supporting construction, infrastructure, and essential services across New South Wales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchToowoomba City, AustraliaHQ recorded Nov 6, 202651-20080 contacts →

Exact match

“MinStaff Survey is a multi-disciplined surveying firm that has been providing professional surveying services to development, resource and infrastructure projects since 1995.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBongaree, AustraliaHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“SEAM Spatial provides advanced surveying services, monitoring and spatial solutions with over 15 years of experience in the mining, infrastructure and construction industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSeven Hills, AustraliaHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“Durkin provides professional engineering services to the construction and built environment industries within the Australian workspace.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMacquarie Park, AustraliaHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“The JK Group is a proudly employee owned and managed company that values professionalism through honesty, dependability and integrity.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchDandenong South, AustraliaHQ recorded Nov 6, 202651-20059 contacts →

Exact match

“Chadwick Geotechnics is a leading provider of geotechnical engineering services across Australia, with over 20 years of experience and a team of highly qualified engineers and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchPinkenba, AustraliaHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“Legion Drilling is a specialist provider of Environmental, Geotechnical and Sonic drilling services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchAlbion, AustraliaHQ recorded Nov 6, 202651-20053 contacts →

Exact match

“At Butler Partners, we specialise in providing high quality, practical, face-to-face and cost-effective design advice to our clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPrestons, AustraliaHQ recorded Nov 6, 202611-5053 contacts →

Exact match

“Strength you can build on.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchCoolum Beach, AustraliaHQ recorded Nov 6, 202611-5047 contacts →

Exact match

“Geotechnical Engineering and Environmental Science”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWest Perth, AustraliaHQ recorded Nov 6, 202651-20044 contacts →

Exact match

“Established in 1985, SGC provides integrated geophysical solutions that identify value-added outcomes for the natural resources sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchPerth, AustraliaHQ recorded Nov 6, 202611-5038 contacts →

Exact match

“Our team specialises in providing our clients with practical, site based, operational geotechnical services on a short or long-term basis.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchPort Melbourne, AustraliaHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“Founded in 2015, Utility Mapping is a leading provider of utility mapping, subsurface investigations, and underground asset intelligence services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchWetherill Park, AustraliaHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“STS Geotechnics Group delivers integrated Geotechnical, Environmental, Drilling and Construction Materials Testing solutions across Australia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchCoomera, AustraliaHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“Pacific Geotech is a geotechnical consulting firm with its head office on the Gold Coast and another in Brisbane.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchEagle Farm, AustraliaHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“Soil Surveys Engineering Pty.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchWindsor, AustraliaHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Gap Geophysics Australia is a Dias Geophysical company - offering a range of proprietary & unique geophysical exploration survey techniques, with advanced instrumentation and high…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBrisbane, AustraliaHQ recorded Nov 6, 20261-1025 contacts →

Exact match

“Cartledge Mining and Geotechnics is a geotechnical consultancy firm that provides innovative solutions for the life cycle of mining projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchUnderwood, AustraliaHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“Geoinventions Consulting Services Pty Ltd is a specialist geotechnical engineering consultancy, providing 'Better Engineering' solutions in geotechnical investigation, analysis…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWollongong, AustraliaHQ recorded Nov 6, 202611-5022 contacts →

Exact match

“SCT Operations (Strata Control Technology) provides geotechnical consultancy and instrumentation services to the mining industry globally.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLane Cove West, AustraliaHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“BCRC are leading construction materials and durability consultants.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 205 subsurface investigation firms based in Australia

See the full list, filter by size, metro and specialty, and access 1,638 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Subsurface investigation firms based in Australia at a glance

As of Nov 6, 2026
50.8%Verified-email coverage
15.7Average contacts per company
1-10Median size (employees)
10.2%Largest-city concentration · Perth
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
126
11-50
56
51-200
20
201-500
1
1,001-5,000
1
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 205 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 “subsurface investigation firms” 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 1,638 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 November 6, 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 “subsurface investigation firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many subsurface investigation firms are there based in Australia?

RevenueBase identified 205 company matches for subsurface investigation firms associated with Australia as of November 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?

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

Which city has the most subsurface investigation firms?

Perth leads with 21 company records, followed by Brisbane (11) and Melbourne (11).

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 1,638 professional contacts with verified work emails tracked across these 205 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 November 6, 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.