Company lists · Data refreshed September 2026

Top 25 Geotechnical consulting firms based in New Zealand

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

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 263 companies tracked

RevenueBase identified 263 geotechnical consulting firms headquartered in New Zealand as of September 2026 and tracks 4,260 professional contacts across them, including 2,197 with verified work emails and 80 with mobile numbers. Auckland is the largest hub.

This list covers geotechnical consulting firms headquartered in New Zealand, 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

263Companies

4,260Contacts tracked

2,197Verified emails

80Mobile numbers

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The 25 largest geotechnical consulting firms based in New Zealand

Ranked by team size

Top 25 of 263 geotechnical consulting firms based in New Zealand, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names geotechnical consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Opus International Consultants LimitedIndirect evidence	Wellington, New Zealand	1,001-5,000	569
	Source: company website · checked Sep 3, 2026
2	Babbage Consultants LimitedIndirect evidence	Hamilton, New Zealand	201-500	231
	“Babbage is a 100% New Zealand-owned multi-discipline consultancy offering 'one-stop-shop' solutions and specialist expertise in Architecture and Interior Design, Ecology…” Source: company website · checked Sep 3, 2026
3	GeovertIndirect evidence	Christchurch, New Zealand	201-500	191
	“Geovert is a global ground engineering company founded in Christchurch, New Zealand in 2001.” Source: company website · checked Sep 3, 2026
4	WOODSIndirect evidence	Christchurch, New Zealand	201-500	187
	“At Woods, we know there’s a lot at stake when you’re enabling land for new homes and infrastructure, reputation, investment, and the opportunity to create better, more resilient…” Source: company website · checked Sep 3, 2026
5	Kirk Roberts ConsultingIndirect evidence	Tauranga, New Zealand	51-200	129
	“Our purpose and passion is striving continuously to find better ways.” Source: company website · checked Sep 3, 2026
6	Geotechnics LTDPartial evidence	Hamilton, New Zealand	51-200	128
	“Geotechnics is a civil engineering testing company, offering a diversified suite of testing services and testing products.” Source: company website · checked Sep 3, 2026
7	MAVENIndirect evidence	New Zealand	51-200	119
	“Maven turns potential into reality.” Source: company website · checked Sep 3, 2026
8	BCD Group LimitedPartial evidence	Auckland, New Zealand	51-200	116
	“BCD Group Limited is a locally owned and operated consultancy specialising in Planning, Surveying, Environmental, Geotechnical, Civil, Traffic & Transport, Structural and Fire…” Source: company website · checked Sep 3, 2026
9	LDE Engineers ScientistsPartial evidence	Whanganui, New Zealand	51-200	82
	“LDE are specialists in geotechnical, civil, environmental and structural engineering.” Source: company website · checked Sep 3, 2026
10	Hick Bros Civil Construction LTDIndirect evidence	Auckland, New Zealand	201-500	79
	“Based in Silverdale, Hick Bros Civil Construction Ltd has been a significant force in civil construction since its formation in 1986.” Source: company website · checked Sep 3, 2026
11	Fraser Thomas LTDPartial evidence	Mount Maunganui, New Zealand	51-200	76
	“Fraser Thomas is a Multi-Disciplinary, client focused consulting firm specialising in resource management, engineering and surveying.” Source: company website · checked Sep 3, 2026
12	Davis OgilvieIndirect evidence	Timaru, New Zealand	51-200	67
	“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.” Source: company website · checked Sep 3, 2026
13	Silvester Clark Consulting EngineersPartial evidence	Hastings, New Zealand	51-200	62
	“Silvester Clark Consulting Engineers is a New Zealand-owned structural engineering firm, delivering expert services since 1979.” Source: company website · checked Sep 3, 2026
14	Survey Worx LTDIndirect evidence	Hamilton, New Zealand	51-200	49
	“Leading New Zealand's surveying industry with exceptional expertise, capabilities, relationships, values and culture.” Source: company website · checked Sep 3, 2026
15	Ross Reid LimitedIndirect evidence	Auckland, New Zealand	11-50	46
	“ROSS REID LIMITED is a civil engineering company based out of 25 Stonedon Drive, AUCKLAND, N/A, New Zealand.” Source: company website · checked Sep 3, 2026
16	RDCLPartial evidence	Auckland, New Zealand	11-50	42
	“RDCL is a world class team of geotechnical and geophysical specialists providing innovative and expert solutions.” Source: company website · checked Sep 3, 2026
17	GroundfixIndirect evidence	Christchurch, New Zealand	51-200	41
	“Groundfix is a multi national award winning ground engineering and slope stabilisation contractor based out of Auckland and Christchurch.” Source: company website · checked Sep 3, 2026
18	EDCIndirect evidence	Whakatane, New Zealand	11-50	40
	“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 3, 2026
19	March Construction LTDPartial evidence	Christchurch, New Zealand	51-200	40
	“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 3, 2026
20	Engco Consulting EngineersIndirect evidence	Christchurch, New Zealand	51-200	39
	“ENGCO is a multi-disciplinary national consultancy with expertise delivering large scale projects, worth in excess of $100 million, and at the boutique end of the market…” Source: company website · checked Sep 3, 2026
21	Cook CostelloIndirect evidence	New Zealand	51-200	39
	“Founded in 1976 Cook Costello has been collaborating in creative and innovative projects for more than 40 years.” Source: company website · checked Sep 3, 2026
22	Cuttriss Consultants LTDIndirect evidence	Paraparaumu, New Zealand	11-50	37
	“Great People.” Source: company website · checked Sep 3, 2026
23	ACH Consulting EngineersIndirect evidence	Auckland, New Zealand	11-50	37
	“Today ACH employs over 40 staff in their Auckland office with a number being Chartered Professional Engineers.” Source: company website · checked Sep 3, 2026
24	Airey Consultants LimitedPartial evidence	Auckland, New Zealand	51-200	35
	“Airey Consultants Limited are an established firm of consulting engineers providing Civil, Structural and Fire design services to Developers, Architects, Construction companies…” Source: company website · checked Sep 3, 2026
25	InitiaPartial evidence	Queenstown, New Zealand	11-50	34
	“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 3, 2026

Showing 25 of 263 geotechnical consulting firms based in New Zealand

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Geotechnical consulting firms based in New Zealand at a glance

As of Sep 3, 2026

1-10Median size (employees)

AucklandLargest hub · 89 HQs

80Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

144

11-50

51-200

201-500

1,001-5,000

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 consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among geotechnical consulting firms, 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 an evidence 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, 2,197 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 3, 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 consulting firms by metro

Geotechnical consulting firms in Auckland89
Geotechnical consulting firms in Christchurch39

Frequently asked

How many geotechnical consulting firms are there based in New Zealand?

RevenueBase identified 263 geotechnical consulting firms headquartered in New Zealand 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?

Opus International Consultants Limited, headquartered in Wellington, tops this list with the largest team on record.

Which city has the most geotechnical consulting firms?

Auckland leads with 89 headquartered companies, followed by Christchurch (39) and Wellington (14).

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 2,197 verified decision-maker contacts tracked across these 263 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 3, 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.