Company lists · Data refreshed September 2026

Top 25 Ground improvement contractors based in Australia

RevenueBase identified 118 ground improvement contractors headquartered in Australia as of September 2026 and tracks 1,880 professional contacts across them, including 811 with verified work emails. Sydney is the largest hub.

This list covers ground improvement contractors 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 16, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
118Companies
1,880Contacts tracked
811Verified emails
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The 25 largest ground improvement contractors based in Australia

Ranked by team size
Top 25 of 118 ground improvement contractors based in Australia, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to ground improvement contractors: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceRosebery, AustraliaHQ checked Sep 16, 2026201-500192 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceChatswood, AustraliaHQ checked Sep 16, 202651-200154 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
3Partial evidenceBrisbane, AustraliaHQ checked Sep 16, 202651-200127 contacts →

Partial evidence

“Wagstaff Piling is a specialist foundation engineering contractor.”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceKurnell, AustraliaHQ checked Sep 16, 202651-200107 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
5Partial evidenceNorth Sydney, AustraliaHQ checked Sep 16, 2026201-500102 contacts →

Partial evidence

“As a global ground engineering and asset preservation company, we draw on over three decades of experience and knowledge in leading, developing and delivering the most advanced…”

Source: RevenueBase Database · checked Sep 16, 2026
6Partial evidenceSydney, AustraliaHQ checked Sep 16, 2026201-50065 contacts →

Partial evidence

“ACE Civil (formerly ACE Demolition and Excavation) has been established since 1997, the company is specialized in ground engineering and piling works in addition to demolition and…”

Source: RevenueBase Database · checked Sep 16, 2026
7Partial evidenceArundel, AustraliaHQ checked Sep 16, 202651-20057 contacts →

Partial evidence

“We deliver ground engineering solutions across industrial, commercial, environmental, mining and infrastructure sectors.”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceSt Peters, AustraliaHQ checked Sep 16, 2026201-50051 contacts →

Partial evidence

“Since its inception in 1989, Polyseal has remained a prominent contractor in the Australia waterproofing and remedial markets.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceMount Pleasant, AustraliaHQ checked Sep 16, 202651-20038 contacts →

Indirect evidence

“Vassallo Constructions is a Mackay based company with expertise in Earthworks, Roadworks, Concrete works, Pipelaying, Landscaping, Surveying, Environmental Remediation…”

Source: RevenueBase Database · checked Sep 16, 2026
10Indirect evidenceCroydon, AustraliaHQ checked Sep 16, 202611-5033 contacts →

Indirect evidence

“O’Sullivan are the leading shoring experts in providing Anchoring, Piling and Shotcreting.”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidenceSilverwater, AustraliaHQ checked Sep 16, 202651-20032 contacts →

Indirect evidence

“Citilink Piling has established an enviable reputation for the design and construction of a diverse range of cost effective and innovative foundation solutions tailored to the…”

Source: RevenueBase Database · checked Sep 16, 2026
12Strong evidenceKurnell, AustraliaHQ checked Sep 16, 202611-5032 contacts →

Strong evidence

“RIX Ground Engineering (RGE) is a specialist Ground Engineering contractor.”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceNewmarket, AustraliaHQ checked Sep 16, 202651-20028 contacts →

Indirect evidence

“Complex specialist foundation engineering projects?”

Source: RevenueBase Database · checked Sep 16, 2026
14Partial evidenceSummer Hill, AustraliaHQ checked Sep 16, 202651-20022 contacts →

Partial evidence

“Shotcrete Australia is an Australian owned and operated ground engineering specialists with over 50 year’s expertise in Ground Anchoring, Shotcrete and Slope Stabilisation.”

Source: RevenueBase Database · checked Sep 16, 2026
15Partial evidenceNewcastle, AustraliaHQ checked Sep 16, 202651-20021 contacts →

Partial evidence

Ground Stabilisation Systems (GSS) is Australia’s premier specialist in geotechnical engineering and difficult-access civil construction.”

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceAdelaide, AustraliaHQ checked Sep 16, 202611-5021 contacts →

Indirect evidence

“Operating across multiple sectors including utilities and transmission, mining, oil and gas, public infrastructure, residential and commercial building.”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidenceYatala, AustraliaHQ checked Sep 16, 202611-5020 contacts →

Indirect evidence

“Mabey is a leading construction and engineering services specialist.”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceKunda Park, AustraliaHQ checked Sep 16, 202611-5019 contacts →

Indirect evidence

“World leading machinery, operated by empowered and highly skilled professionals.”

Source: RevenueBase Database · checked Sep 16, 2026
19Partial evidenceLawnton, AustraliaHQ checked Sep 16, 2026201-50018 contacts →

Partial evidence

“Piling Contractors Pty Ltd is one of Australia’s premier specialist engineering companies.”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidenceDoncaster, AustraliaHQ checked Sep 16, 202611-5017 contacts →

Indirect evidence

“Experience is vital when you need results.”

Source: RevenueBase Database · checked Sep 16, 2026
21Indirect evidenceWingham, AustraliaHQ checked Sep 16, 202611-5014 contacts →

Indirect evidence

“Regional Geotechnical Solutions is a civil engineering company based out of Australia.”

Source: RevenueBase Database · checked Sep 16, 2026
22Partial evidenceNorthgate, AustraliaHQ checked Sep 16, 202651-20014 contacts →

Partial evidence

“QPS is an industry leader in specialist ground engineering services, covering all aspects of ground retention and foundation support and strengthening to civil, construction and…”

Source: RevenueBase Database · checked Sep 16, 2026
23Partial evidenceLilydale, AustraliaHQ checked Sep 16, 202651-20012 contacts →

Partial evidence

“Stabilime Group of Companies is a construction company based out of Australia.”

Source: RevenueBase Database · checked Sep 16, 2026
24Strong evidenceEastern Coast, AustraliaHQ checked Sep 16, 202651-20011 contacts →

Strong evidence

“Pointe Engineering is a Specialist Ground Improvement Contractor.”

Source: RevenueBase Database · checked Sep 16, 2026
25Indirect evidenceSydney, AustraliaHQ checked Sep 16, 202611-5011 contacts →

Indirect evidence

“Concrete Engineering Services is specialised engineering contract.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 118 ground improvement contractors based in Australia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 811 reachable decision-makers.

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Ground improvement contractors based in Australia at a glance

As of Sep 16, 2026
43.1%Verified-email coverage
15.9Average contacts per company
11-50Median size (employees)
7.6%Largest-city concentration · Sydney
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
43
11-50
50
51-200
19
201-500
6

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 118 companies.

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 ground improvement contractors, 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 “ground improvement contractors”. 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 ground improvement contractors), 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 ground improvement contractors, 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, 811 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 16, 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.

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 ground improvement contractors, 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 ground improvement contractors are there based in Australia?

RevenueBase identified 118 ground improvement contractors 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?

Geovert, headquartered in Rosebery, tops this list with the largest team on record.

Which city has the most ground improvement contractors?

Sydney leads with 9 headquartered companies, followed by Melbourne (5) and Perth (5).

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 811 verified decision-maker contacts tracked across these 118 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 16, 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.