Company lists · Data refreshed September 2026

Top 25 Environmental consultant firms based in New Zealand

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 91 companies tracked

RevenueBase identified 91 environmental consultant firms headquartered in New Zealand as of September 2026 and tracks 1,868 professional contacts across them, including 966 with verified work emails. Auckland is the largest hub.

This list covers environmental consultant 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 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 21, 2026 86% judged on-target in blind review

91Companies

1,868Contacts tracked

966Verified emails

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The 25 largest environmental consultant firms based in New Zealand

Ranked by team size

Top 25 of 91 environmental consultant firms based in New Zealand, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to environmental consultant firms: 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	Opus International Consultants Limited	Indirect evidence	Wellington, New ZealandHQ checked Sep 21, 2026	1,001-5,000	568 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
2	Pattle Delamore Partners	Strong evidence	Auckland, New ZealandHQ checked Sep 21, 2026	201-500	277 contacts →
	Strong evidence “PDP is one of Aotearoa New Zealand’s leading environmental science, engineering, and advisory consultancies.” Source: RevenueBase Database · checked Sep 21, 2026
3	Babbage Consultants Limited	Partial evidence	Auckland, New ZealandHQ checked Sep 21, 2026	201-500	233 contacts →
	Partial 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 21, 2026
4	Mitchell Daysh	Strong evidence	Dunedin, New ZealandHQ checked Sep 21, 2026	11-50	45 contacts →
	Strong 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 21, 2026
5	Verum Group	Partial evidence	Christchurch, New ZealandHQ checked Sep 21, 2026	11-50	32 contacts →
	Partial 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 21, 2026
6	SQN	Strong evidence	Wellington, New ZealandHQ checked Sep 21, 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 21, 2026
7	Ecological Solutions Limited	Partial evidence	Auckland, New ZealandHQ checked Sep 21, 2026	1-10	19 contacts →
	Partial evidence “EcoLogical Solutions Limited provides high quality cost effective terrestrial and freshwater environmental consulting services throughout New Zealand.” Source: RevenueBase Database · checked Sep 21, 2026
8	Chemsafety LTD	Partial evidence	Christchurch, New ZealandHQ checked Sep 21, 2026	11-50	18 contacts →
	Partial 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 21, 2026
9	Williamson Water & Land Advisory	Strong evidence	Kumeu, New ZealandHQ checked Sep 21, 2026	11-50	16 contacts →
	Strong evidence “Williamson Water & Land Advisory (WWLA) is a New Zealand based, employee owned, niche environmental consultancy.” Source: RevenueBase Database · checked Sep 21, 2026
10	Irricon	Strong evidence	Timaru, New ZealandHQ checked Sep 21, 2026	11-50	15 contacts →
	Strong evidence “Irricon Resource Solutions is a leading environmental consultancy based throughout Canterbury, Otago and the North Island.” Source: RevenueBase Database · checked Sep 21, 2026
11	Consultex Environmental	Strong evidence	Auckland, New ZealandHQ checked Sep 21, 2026	11-50	13 contacts →
	Strong 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 21, 2026
12	Berry Simons	Indirect evidence	Auckland Cbd, New ZealandHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Success in your RMA project is our sole focus.” Source: RevenueBase Database · checked Sep 21, 2026
13	Enviroscope	Strong evidence	Wanaka, New ZealandHQ checked Sep 21, 2026	1-10	10 contacts →
	Strong evidence “Enviroscope Limited is a specialist environmental management consultancy providing expert advice and support for the construction and development industry.” Source: RevenueBase Database · checked Sep 21, 2026
14	RMA Ecology Limited	Indirect evidence	Nelson, New ZealandHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “We focus on the technical aspects of projects that are seeking resource or operating consents where ecological values are present.” Source: RevenueBase Database · checked Sep 21, 2026
15	Viridis Limited	Indirect evidence	Auckland, New ZealandHQ checked Sep 21, 2026	11-50	9 contacts →
	Indirect evidence “Viridis (adjective; Latin): “green”.” Source: RevenueBase Database · checked Sep 21, 2026
16	CLC Consulting Group Limited	Partial evidence	Auckland, New ZealandHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “We offer Consulting Services in the following fields: Civil & Environmental Engineering, Structural Engineering, Land Surveying and Resource Management Planning.” Source: RevenueBase Database · checked Sep 21, 2026
17	Vision Consulting Engineers, NZ	Partial evidence	Kerikeri, New ZealandHQ checked Sep 21, 2026	1-10	8 contacts →
	Partial evidence “At VISION we pride ourselves on delivering high quality solutions for environmental, engineering and planning challenges.” Source: RevenueBase Database · checked Sep 21, 2026
18	Blueline Consulting NZ	Partial evidence	Taupo, New ZealandHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial evidence “We are a forward-thinking consultancy driven by our passion for pioneering design concepts and advancing sustainable solutions.” Source: RevenueBase Database · checked Sep 21, 2026
19	WM Environmental	Strong evidence	Invercargill, New ZealandHQ checked Sep 21, 2026	1-10	7 contacts →
	Strong evidence “WM Environmental Ltd is a specialist environmental management consultancy who provides expert advice and support to ensure your compliance requirements are being met.” Source: RevenueBase Database · checked Sep 21, 2026
20	RDA Consulting	Partial evidence	Invercargill, New ZealandHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial evidence “We are a multi-disciplinary team providing holistic, leading edge environmental, civil and geotechnical solutions to improve the interaction of enterprise with soils, air, water…” Source: RevenueBase Database · checked Sep 21, 2026
21	Momentum Planning And Design	Strong evidence	Tauranga, New ZealandHQ checked Sep 21, 2026	1-10	7 contacts →
	Strong evidence “Momentum Planning and Design is a boutique consultancy firm based in Tauranga, we specialise in environmental planning, urban design and landscape architecture.” Source: RevenueBase Database · checked Sep 21, 2026
22	Industrial Waters Solutions Group	Partial evidence	Auckland, New ZealandHQ checked Sep 21, 2026	1-10	6 contacts →
	Partial evidence “Specialists in stormwater, wastewater and environmental management for industry.” Source: RevenueBase Database · checked Sep 21, 2026
23	Place Group LTD	Strong evidence	Hamilton, New ZealandHQ checked Sep 21, 2026	1-10	6 contacts →
	Strong evidence “Place Group is a specialist environmental planning consultancy that assists a diverse range of clients with strategic policy advice, project management, facilitation, stakeholder…” Source: RevenueBase Database · checked Sep 21, 2026
24	Thurston Consulting LTD	Indirect evidence	Auckland Cbd, New ZealandHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “Thurston Consulting was first established in 1973 in Christchurch, utilising the mechanical engineering and industry knowledge of its team.” Source: RevenueBase Database · checked Sep 21, 2026
25	Chancerygreen	Partial evidence	Auckland, New ZealandHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “ChanceryGreen advises on all aspects of environment law and strategy.” Source: RevenueBase Database · checked Sep 21, 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 consultant firms. 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 consultant firms.
Partial evidence: Its own public description names part of environmental consultant firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental consultant firms. 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 91 environmental consultant firms based in New Zealand

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Environmental consultant firms based in New Zealand at a glance

As of Sep 21, 2026

51.7%Verified-email coverage

20.5Average contacts per company

1-10Median size (employees)

31.9%Largest-city concentration · Auckland

Sep 21, 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 91 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 consultant firms, 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 consultant firms”. 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 consultant firms), 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 consultant 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 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, 966 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 21, 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 consultant firms by metro

Environmental consultant firms in Auckland29

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 consultant firms, 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 consultant firms are there based in New Zealand?

RevenueBase identified 91 environmental consultant 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 environmental consultant firms?

Auckland leads with 29 headquartered companies, followed by Christchurch (13) and Wellington (6).

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 966 verified decision-maker contacts tracked across these 91 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 21, 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.