Company lists · Data refreshed September 2026

Top 25 Geotechnical engineering companies based in New Zealand

Name: Geotechnical engineering companies based in New Zealand
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 186 companies tracked

Find 186 geotechnical engineering companies based in New Zealand, with 2,217 business contacts and 1,152 email addresses, published September 2026. Auckland is the single most-represented city among the companies on this list. Use the directory to identify firms for site investigation, subsurface analysis, foundation design, and related project needs.

Geotechnical engineering companies investigate soil, rock, groundwater, and subsurface conditions to inform foundation design, earthwork, construction, and infrastructure projects. This list covers companies that provide geotechnical investigation, testing, analysis, design, consulting, or related subsurface engineering services. Ranked by team size, largest first. Data current as of September 6, 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 6, 2026 86% judged on-target in blind review

186Companies

2,217Contacts tracked

1,152Verified emails

43Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest geotechnical engineering companies based in New Zealand

Ranked by team size

Top 25 of 186 geotechnical engineering companies based in New Zealand, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to geotechnical engineering companies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Geotechnics LTD	Strong evidence	Onehunga, New ZealandHQ checked Sep 6, 2026	51-200	129 contacts →
	“Geotechnics is a civil engineering testing company, offering a diversified suite of testing services and testing products.” Source: company website · checked Sep 6, 2026
2	Kirk Roberts Consulting	Indirect evidence	Christchurch, New ZealandHQ checked Sep 6, 2026	51-200	129 contacts →
	“Our purpose and passion is striving continuously to find better ways.” Source: company website · checked Sep 6, 2026
3	Engeo NZ & AU	Strong evidence	Christchurch, New ZealandHQ checked Sep 6, 2026	51-200	121 contacts →
	“ENGEO Ltd (formally Geoscience Consulting) is a specialist consultancy group providing Engineering Geological, Geophysical, Environmental and Geotechnical Engineering services.” Source: company website · checked Sep 6, 2026
4	LDE Engineers Scientists	Strong evidence	Gisborne, New ZealandHQ checked Sep 6, 2026	51-200	81 contacts →
	“LDE are specialists in geotechnical, civil, environmental and structural engineering.” Source: company website · checked Sep 6, 2026
5	Fraser Thomas LTD	Partial evidence	Auckland, New ZealandHQ checked Sep 6, 2026	51-200	77 contacts →
	“Fraser Thomas is a Multi-Disciplinary, client focused consulting firm specialising in resource management, engineering and surveying.” Source: company website · checked Sep 6, 2026
6	Silvester Clark Consulting Engineers	Partial evidence	Pipitea, New ZealandHQ checked Sep 6, 2026	51-200	62 contacts →
	“Silvester Clark Consulting Engineers is a New Zealand-owned structural engineering firm, delivering expert services since 1979.” Source: company website · checked Sep 6, 2026
7	Southroads	Indirect evidence	Waikiwi, New ZealandHQ checked Sep 6, 2026	201-500	54 contacts →
	“SouthRoads has more than 30 years’ experience delivering services that cover rural, residential, commercial, civil, and mapping and surveying projects.” Source: company website · checked Sep 6, 2026
8	Ross Reid Limited	Partial evidence	Auckland, New ZealandHQ checked Sep 6, 2026	11-50	47 contacts →
	“ROSS REID LIMITED is a civil engineering company based out of 25 Stonedon Drive, AUCKLAND, N/A, New Zealand.” Source: company website · checked Sep 6, 2026
9	RDCL	Partial evidence	Hastings, New ZealandHQ checked Sep 6, 2026	11-50	44 contacts →
	“RDCL is a world class team of geotechnical and geophysical specialists providing innovative and expert solutions.” Source: company website · checked Sep 6, 2026
10	GWE Consulting Engineers	Strong evidence	Takapuna, New ZealandHQ checked Sep 6, 2026	11-50	43 contacts →
	“GWE Consulting Engineers is a multi-disciplinary engineering consultancy providing geotechnical, civil and water, environmental, wastewater and stormwater engineering services and…” Source: company website · checked Sep 6, 2026
11	Cook Costello	Strong evidence	Whangarei, New ZealandHQ checked Sep 6, 2026	11-50	40 contacts →
	“Cook Costello is a New Zealand multidisciplinary engineering consultancy working across geotechnical, civil and structural engineering, geophysics, land surveying, land…” Source: company website · checked Sep 6, 2026
12	Geosolve LTD	Indirect evidence	South Dunedin, New ZealandHQ checked Sep 6, 2026	11-50	39 contacts →
	“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…” Source: company website · checked Sep 6, 2026
13	EDC	Partial evidence	Auckland, New ZealandHQ checked Sep 6, 2026	11-50	39 contacts →
	“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…” Source: company website · checked Sep 6, 2026
14	March Construction LTD	Partial evidence	Christchurch, New ZealandHQ checked Sep 6, 2026	51-200	39 contacts →
	“March Construction brings together the geotechnical and water infrastructure expertise, which when combined with the micro-tunnelling expertise of our sister company Rob Carr…” Source: company website · checked Sep 6, 2026
15	ACH Consulting Engineers	Indirect evidence	Auckland, New ZealandHQ checked Sep 6, 2026	11-50	38 contacts →
	“Today ACH employs over 40 staff in their Auckland office with a number being Chartered Professional Engineers.” Source: company website · checked Sep 6, 2026
16	Contech	Partial evidence	Auckland, New ZealandHQ checked Sep 6, 2026	51-200	38 contacts →
	“Contech is New Zealand’s leading specialist civil engineering company in concrete construction and remediation.” Source: company website · checked Sep 6, 2026
17	Initia	Strong evidence	Auckland, New ZealandHQ checked Sep 6, 2026	11-50	33 contacts →
	“Initia is a specialist geotechnical engineering consultancy that provides design, advisory and construction observation services for building, infrastructure and earthworks…” Source: company website · checked Sep 6, 2026
18	Abseil Access LTD	Indirect evidence	Wellington, New ZealandHQ checked Sep 6, 2026	51-200	32 contacts →
	“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…” Source: company website · checked Sep 6, 2026
19	HD GEO	Strong evidence	Hamilton, New ZealandHQ checked Sep 6, 2026	11-50	31 contacts →
	“We are specialists in geotechnical engineering and land and water contamination.” Source: company website · checked Sep 6, 2026
20	Plaxis Geotechnical Analysis	Partial evidence	Christchurch, New ZealandHQ checked Sep 6, 2026	501-1,000	29 contacts →
	“Understand the underground and solve complex geotechnical challenges with Seequent's PLAXIS technology.” Source: company website · checked Sep 6, 2026
21	Soil & Rock Consultants	Strong evidence	Henderson, New ZealandHQ checked Sep 6, 2026	51-200	28 contacts →
	“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…” Source: company website · checked Sep 6, 2026
22	NAL Civil & Structural Engineers Limited	Partial evidence	Auckland, New ZealandHQ checked Sep 6, 2026	11-50	28 contacts →
	“About Us: NAL Civil & Structural Engineers Limited is a multi-disciplinary engineering consultancy specialising in a broad range of civil infrastructure and building projects.” Source: company website · checked Sep 6, 2026
23	Strata Group Consulting Engineers LTD	Partial evidence	Hastings, New ZealandHQ checked Sep 6, 2026	11-50	27 contacts →
	“At Strata Group, engineering is defined by precision, innovation, and dedication.” Source: company website · checked Sep 6, 2026
24	Rock Control	Partial evidence	Christchurch, New ZealandHQ checked Sep 6, 2026	11-50	26 contacts →
	“Rock Control are ground engineering specialists with a firm focus on construction drilling.” Source: company website · checked Sep 6, 2026
25	ICB Civil Construction	Indirect evidence	Auckland, New ZealandHQ checked Sep 6, 2026	51-200	25 contacts →
	“ICB Civil Construction is one of New Zealand’s leading specialists in retaining wall, piling, and anchoring construction.” Source: company website · checked Sep 6, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: geotechnical engineering companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names geotechnical engineering companies.
Partial evidence: Its own public description names part of geotechnical engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geotechnical engineering companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 186 geotechnical engineering companies based in New Zealand

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,152 reachable decision-makers.

Free signup · no credit card

View the full list →

Geotechnical engineering companies based in New Zealand at a glance

As of Sep 6, 2026

52.0%Verified-email coverage

1.9%Mobile-number coverage

11.9Average contacts per company

1-10Median size (employees)

28.5%Largest-city concentration · Auckland

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

1,0900–30

5831–60

061–90

290–180

2180+

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 engineering companies, 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 New Zealand whose own description of what they do matches “geotechnical engineering companies”. 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 geotechnical engineering companies), 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 geotechnical engineering companies, and records with no verified work email. Companies headquartered outside New Zealand 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, 1,152 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 6, 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 engineering companies by metro

Geotechnical engineering companies in Auckland53
Geotechnical engineering companies in Christchurch35

Frequently asked

What do geotechnical engineering companies do?

Geotechnical engineering companies assess soil, rock, groundwater, and subsurface conditions to support foundation design, earthwork, construction, and infrastructure projects.

How many geotechnical engineering companies are based in New Zealand?

The directory lists 186 geotechnical engineering companies based in New Zealand.

Where are most geotechnical engineering companies located?

Auckland is the single most-represented city among the companies on this list.

Ready to reach these companies? Verified emails and direct dials for all 186 geotechnical engineering companies based in New Zealand. Start with a free account, no credit card.

Download this list →

Related lists

Geotechnical engineering companies by geography

Browse the directory

Browse: Companies home · All New Zealand lists · All Geotechnical engineering companies lists · New 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 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.