Company lists · Data refreshed September 2026

Top 25 Subsurface analysis companies based in New Zealand

RevenueBase identified 136 company matches for subsurface analysis companies associated with New Zealand as of September 2026 and tracks 2,856 professional contacts across them, including 1,792 with verified work emails. Auckland is the largest hub.

This list covers company matches for subsurface analysis companies associated with New Zealand, 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 September 19, 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 Sep 19, 2026 How this list was built
136Companies
2,856Contacts tracked
1,792Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest subsurface analysis companies based in New Zealand

Ranked by team size
Top 25 of 136 company matches for subsurface analysis companies based in New Zealand, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 matchAuckland Central, New ZealandHQ recorded Sep 19, 20261,001-5,000958 contacts →

Exact match

“At Tonkin + Taylor, we’re dedicated to creating and sustaining a better world together.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchOnehunga, New ZealandHQ recorded Sep 19, 202651-200129 contacts →

Exact match

“Geotechnics is a civil engineering testing company, offering a diversified suite of testing services and testing products.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchChristchurch, New ZealandHQ recorded Sep 19, 202651-200121 contacts →

Exact match

“ENGEO Ltd (formally Geoscience Consulting) is a specialist consultancy group providing Engineering Geological, Geophysical, Environmental and Geotechnical Engineering services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchTakapuna, New ZealandHQ recorded Sep 19, 202651-20084 contacts →

Exact match

“Our company has evolved from humble yet visionary origins to become the multi-disciplinary consultancy it is today.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchGisborne, New ZealandHQ recorded Sep 19, 202651-20081 contacts →

Exact match

“LDE are specialists in geotechnical, civil, environmental and structural engineering.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchAuckland, New ZealandHQ recorded Sep 19, 202651-20077 contacts →

Exact match

“Fraser Thomas is a Multi-Disciplinary, client focused consulting firm specialising in resource management, engineering and surveying.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchChristchurch, New ZealandHQ recorded Sep 19, 202651-20069 contacts →

Exact match

“Davis Ogilvie (DO) is a trusted multidisciplinary engineering consultancy in the South Island with an unwavering commitment to the region, its communities and the environment.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchPipitea, New ZealandHQ recorded Sep 19, 202651-20062 contacts →

Exact match

“Silvester Clark Consulting Engineers is a New Zealand-owned structural engineering firm, delivering expert services since 1979.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchHastings, New ZealandHQ recorded Sep 19, 202611-5044 contacts →

Exact match

“RDCL is a world class team of geotechnical and geophysical specialists providing innovative and expert solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchTakapuna, New ZealandHQ recorded Sep 19, 202611-5043 contacts →

Exact match

“GWE Consulting Engineers is a multi-disciplinary engineering consultancy providing geotechnical, civil and water, environmental, wastewater and stormwater engineering services and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchWhangarei, New ZealandHQ recorded Sep 19, 202611-5040 contacts →

Exact match

“Cook Costello is a New Zealand multidisciplinary engineering consultancy working across geotechnical, civil and structural engineering, geophysics, land surveying, land…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchSouth Dunedin, New ZealandHQ recorded Sep 19, 202611-5039 contacts →

Exact match

“At GeoSolve we understand the importance of managing geological risk, and our specialist knowledge and proven track record means we can provide practical resilient solutions…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchAuckland, New ZealandHQ recorded Sep 19, 202611-5039 contacts →

Exact match

“Who We Are With offices in Auckland, Christchurch and Whakatane, multi-disciplined Engineering Design Consultants (EDC) are your answer to all things engineering.// What We Do EDC…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchChristchurch, New ZealandHQ recorded Sep 19, 202651-20039 contacts →

Exact match

“March Construction brings together the geotechnical and water infrastructure expertise, which when combined with the micro-tunnelling expertise of our sister company Rob Carr…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchAuckland, New ZealandHQ recorded Sep 19, 202651-20038 contacts →

Exact match

“Contech is New Zealand’s leading specialist civil engineering company in concrete construction and remediation.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchAuckland, New ZealandHQ recorded Sep 19, 202611-5033 contacts →

Exact match

“Initia is a specialist geotechnical engineering consultancy that provides design, advisory and construction observation services for building, infrastructure and earthworks…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchWellington, New ZealandHQ recorded Sep 19, 202651-20032 contacts →

Exact match

“Abseil Access aims to assist in the improvement of New Zealand's infrastructure and give the public access to some of the most remarkable landscapes possible via our bespoke…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchHamilton, New ZealandHQ recorded Sep 19, 202611-5031 contacts →

Exact match

“We are specialists in geotechnical engineering and land and water contamination.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchChristchurch, New ZealandHQ recorded Sep 19, 2026501-1,00029 contacts →

Exact match

“Understand the underground and solve complex geotechnical challenges with Seequent's PLAXIS technology.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchHenderson, New ZealandHQ recorded Sep 19, 202651-20028 contacts →

Exact match

“With a rich legacy spanning over three decades, Soil & Rock Consultants stand at the forefront of the geotechnical, environmental, civil, and geological engineering landscape in…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchAuckland, New ZealandHQ recorded Sep 19, 202611-5028 contacts →

Exact match

“About Us: NAL Civil & Structural Engineers Limited is a multi-disciplinary engineering consultancy specialising in a broad range of civil infrastructure and building projects.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchChristchurch, New ZealandHQ recorded Sep 19, 202611-5026 contacts →

Exact match

“Rock Control are ground engineering specialists with a firm focus on construction drilling.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchAuckland, New ZealandHQ recorded Sep 19, 202651-20023 contacts →

Exact match

“Geotechnical Engineering, and Engineering Geology, including Site Investigations, Earthworks Supervision and Control, Expansive Soils, Dynamic Probing, Foundation & Retaining Wall…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchAuckland, New ZealandHQ recorded Sep 19, 202611-5020 contacts →

Exact match

“Engineering Geology Ltd (EGL) is a professional consultancy practice specialising in geotechnical and earthquake engineering and engineering geology.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchAuckland, New ZealandHQ recorded Sep 19, 202651-20019 contacts →

Exact match

“We provide a full range of specialist construction services in the fields of ground anchoring, soil nailing, post-tensioning, drilling and grouting.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 136 subsurface analysis companies based in New Zealand

See the full list, filter by size, metro and specialty, and access 1,792 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Subsurface analysis companies based in New Zealand at a glance

As of Sep 19, 2026
62.7%Verified-email coverage
21.0Average contacts per company
11-50Median size (employees)
32.4%Largest-city concentration · Auckland
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
66
11-50
48
51-200
19
201-500
1
501-1,000
1
1,001-5,000
1

Email recency for this list is measured worldwide rather than for New Zealand, so it is reported there. Company counts and contact totals on this page are exact for New Zealand, over 136 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 New Zealand whose business descriptions match “subsurface analysis companies” 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 1,792 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 September 19, 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 analysis companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many subsurface analysis companies are there based in New Zealand?

RevenueBase identified 136 company matches for subsurface analysis companies associated with New Zealand as of September 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?

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

Which city has the most subsurface analysis companies?

Auckland leads with 44 company records, followed by Christchurch (25) and Wellington (10).

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 1,792 professional contacts with verified work emails tracked across these 136 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 September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 136 subsurface analysis companies based in New Zealand. Start with a free account, no credit card.

Download this list →

Related lists

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.