Company lists · Data refreshed September 2026

Top 25 Environmental consulting and remediation based in New Zealand

Name: Environmental consulting and remediation based in New Zealand
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 149 companies tracked

RevenueBase identified 149 environmental consulting and remediation headquartered in New Zealand as of September 2026 and tracks 3,482 professional contacts across them, including 2,016 with verified work emails. Auckland is the largest hub.

This list covers environmental consulting and remediation 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 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 19, 2026 86% judged on-target in blind review

149Companies

3,482Contacts tracked

2,016Verified emails

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The 25 largest environmental consulting and remediation based in New Zealand

Ranked by team size

Top 25 of 149 environmental consulting and remediation based in New Zealand, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental consulting and remediation: 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	Tonkin Taylor	Indirect evidence	Auckland Central, New ZealandHQ checked Sep 19, 2026	1,001-5,000	958 contacts →
	Indirect evidence “At Tonkin + Taylor, we’re dedicated to creating and sustaining a better world together.” Source: RevenueBase Database · checked Sep 19, 2026
2	Opus International Consultants Limited	Indirect evidence	Wellington, New ZealandHQ checked Sep 19, 2026	1,001-5,000	568 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
3	Pattle Delamore Partners	Partial evidence	Auckland, New ZealandHQ checked Sep 19, 2026	201-500	277 contacts →
	Partial evidence “PDP is one of Aotearoa New Zealand’s leading environmental science, engineering, and advisory consultancies.” Source: RevenueBase Database · checked Sep 19, 2026
4	Babbage Consultants Limited	Indirect evidence	Auckland, New ZealandHQ checked Sep 19, 2026	201-500	233 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 19, 2026
5	Wildland Consultants LTD	Indirect evidence	Rotorua, New ZealandHQ checked Sep 19, 2026	51-200	77 contacts →
	Indirect evidence “Wildland Consultants is a progressive ecological consultancy committed to providing high quality ecological information, advice and technical services to a wide range of clients.” Source: RevenueBase Database · checked Sep 19, 2026
6	Fraser Thomas LTD	Partial evidence	Auckland, New ZealandHQ checked Sep 19, 2026	51-200	77 contacts →
	Partial evidence “Fraser Thomas is a Multi-Disciplinary, client focused consulting firm specialising in resource management, engineering and surveying.” Source: RevenueBase Database · checked Sep 19, 2026
7	Mitchell Daysh	Partial evidence	Dunedin, New ZealandHQ checked Sep 19, 2026	11-50	45 contacts →
	Partial evidence “Mitchell Daysh is a specialist environmental and planning consultancy with the right people to navigate New Zealand's most complex resource management challenges to our government…” Source: RevenueBase Database · checked Sep 19, 2026
8	GWE Consulting Engineers	Strong evidence	Takapuna, New ZealandHQ checked Sep 19, 2026	11-50	43 contacts →
	Strong evidence “GWE Consulting Engineers is a multi-disciplinary engineering consultancy providing geotechnical, civil and water, environmental, wastewater and stormwater engineering services and…” Source: RevenueBase Database · checked Sep 19, 2026
9	Nikau Group	Strong evidence	Auckland, New ZealandHQ checked Sep 19, 2026	51-200	35 contacts →
	Strong evidence “New Zealand's largest demolition, deconstruction and environmental remediation company specialising in all methods for the safe, efficient and effective deconstruction of any…” Source: RevenueBase Database · checked Sep 19, 2026
10	Verum Group	Strong evidence	Christchurch, New ZealandHQ checked Sep 19, 2026	11-50	32 contacts →
	Strong evidence “Verum Group is an environmental research and consulting company, with specialist knowledge in Environmental and Occupational Hygiene monitoring, energy technologies and…” Source: RevenueBase Database · checked Sep 19, 2026
11	Soil & Rock Consultants	Partial evidence	Henderson, New ZealandHQ checked Sep 19, 2026	51-200	28 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 19, 2026
12	Bonisch	Indirect evidence	Invercargill, New ZealandHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “Bonisch Consultants is a progressive and innovative business based in Invercargill with branch offices in Te Anau and Christchurch.” Source: RevenueBase Database · checked Sep 19, 2026
13	SQN	Strong evidence	Wellington, New ZealandHQ checked Sep 19, 2026	11-50	27 contacts →
	Strong evidence “SQN Consulting is a leading environmental consultancy in New Zealand, providing a wide range of services in asbestos management, contaminated land, industrial trade activities…” Source: RevenueBase Database · checked Sep 19, 2026
14	JRG Energy	Indirect evidence	Taupo, New ZealandHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “JRG Energy is an established group of personalized consultants servicing all aspects of the Oil and Gas, Geothermal, and Renewable Energy Industries.” Source: RevenueBase Database · checked Sep 19, 2026
15	Aqualinc Research Limited	Partial evidence	Christchurch, New ZealandHQ checked Sep 19, 2026	11-50	24 contacts →
	Partial evidence “Aqualinc Research Limited is an independent provider of research-based consulting services for water and land management.” Source: RevenueBase Database · checked Sep 19, 2026
16	Precise Consulting	Indirect evidence	Auckland, New ZealandHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Precise Limited is a nationwide business offering specialist consultants with a focus on HAZMAT and Occupational Hygiene Services.” Source: RevenueBase Database · checked Sep 19, 2026
17	Scope Group LTD	Indirect evidence	Rangiora, New ZealandHQ checked Sep 19, 2026	51-200	21 contacts →
	Indirect evidence “Scope are a dedicated and skilled team of demolition, asbestos and civil contractors with a passion for our industry.” Source: RevenueBase Database · checked Sep 19, 2026
18	Ecological Solutions Limited	Strong evidence	Auckland, New ZealandHQ checked Sep 19, 2026	1-10	19 contacts →
	Strong evidence “EcoLogical Solutions Limited provides high quality cost effective terrestrial and freshwater environmental consulting services throughout New Zealand.” Source: RevenueBase Database · checked Sep 19, 2026
19	Chemsafety LTD	Indirect evidence	Christchurch, New ZealandHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “Using Science to Keep People Safe & Healthy Chemsafety experienced consultants become part of your company team, working to provide effective and efficient solutions for your…” Source: RevenueBase Database · checked Sep 19, 2026
20	Bioresearches A Babbage Company	Partial evidence	Auckland, New ZealandHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “Bioresearches Group Limited is a management consulting company based out of Level 4/68 Beach Road, Auckland CBD, Auckland, New Zealand.” Source: RevenueBase Database · checked Sep 19, 2026
21	Williamson Water & Land Advisory	Partial evidence	Kumeu, New ZealandHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “Williamson Water & Land Advisory (WWLA) is a New Zealand based, employee owned, niche environmental consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
22	Property Services Unlimited	Indirect evidence	Hamilton, New ZealandHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Established in the Waikato 2002, Property Services Unlimited is a proudly locally owned and operated business with branches in Hamilton, Auckland and the Bay of Plenty.” Source: RevenueBase Database · checked Sep 19, 2026
23	Irricon	Partial evidence	Timaru, New ZealandHQ checked Sep 19, 2026	11-50	15 contacts →
	Partial evidence “Irricon Resource Solutions is a leading environmental consultancy based throughout Canterbury, Otago and the North Island.” Source: RevenueBase Database · checked Sep 19, 2026
24	Consultex Environmental	Partial evidence	Auckland, New ZealandHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Consultex Environmental is a New Zealand-based hazardous materials consultancy specialising in asbestos, mould, and environmental risk management across the built environment.” Source: RevenueBase Database · checked Sep 19, 2026
25	Petrotec Services LTD	Indirect evidence	Christchurch, New ZealandHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Established in 1987, Petrotec Services Ltd is a nationwide Construction, Contracting and Servicing company operating in the petroleum industry specialising in hazardous substances.” Source: RevenueBase Database · checked Sep 19, 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: environmental consulting and remediation. 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 environmental consulting and remediation.
Partial evidence: Its own public description names part of environmental consulting and remediation, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental consulting and remediation. 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 149 environmental consulting and remediation based in New Zealand

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Environmental consulting and remediation based in New Zealand at a glance

As of Sep 19, 2026

57.9%Verified-email coverage

23.4Average contacts per company

1-10Median size (employees)

32.9%Largest-city concentration · Auckland

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 149 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 environmental consulting and remediation, 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 “environmental consulting and remediation”. 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 environmental consulting and remediation), 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 environmental consulting and remediation, 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, 2,016 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 19, 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.

Environmental consulting and remediation by metro

Environmental consulting and remediation in Auckland49

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 environmental consulting and remediation, 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 environmental consulting and remediation are there based in New Zealand?

RevenueBase identified 149 environmental consulting and remediation 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?

Tonkin Taylor, headquartered in Auckland, tops this list with the largest team on record.

Which city has the most environmental consulting and remediation?

Auckland leads with 49 headquartered companies, followed by Christchurch (19) and Hamilton (7).

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 2,016 verified decision-maker contacts tracked across these 149 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 19, 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.