Company lists · Data verified August 2026

Top 25 Environmental consultancy firms based in New Zealand

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 228 companies tracked

There are 228 environmental consultancy firms headquartered in New Zealand (RevenueBase, August 2026). RevenueBase tracks 3,113 professional contacts across them, including 1,715 with verified work emails and 182 with mobile numbers. Auckland is the largest hub.

This list covers environmental consultancy firms headquartered in New Zealand, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

228Companies

3,113Contacts tracked

1,715Verified emails

182Mobile numbers

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The 25 largest environmental consultancy firms based in New Zealand

Ranked by team size

Top 25 of 228 environmental consultancy firms based in New Zealand, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Opus International Consultants Limited	Wellington	1,001-5,000	569	68
2	Pattle Delamore Partners	Invercargill	201-500	272	231
3	EHS Support	Auckland	201-500	237	188
4	Babbage Consultants Limited	Hamilton	201-500	231	161
5	Riley Consultants	Auckland	51-200	86	62
6	Powell Fenwick	Christchurch	51-200	79	65
7	Wildland Consultants LTD	Tauranga	51-200	77	34
8	Morphum Environmental	Hamilton	11-50	71	60
9	Cato Bolam	Whangarei	51-200	55	45
10	Mitchell Daysh	Nelson	11-50	45	37
11	Indufor LTD	n/a	51-200	43	13
12	GWE Consulting Engineers	Waiheke Island	11-50	42	27
13	EDC	Whakatane	11-50	40	23
14	Engco Consulting Engineers	Christchurch	51-200	39	28
15	ACH Consulting Engineers	Auckland	11-50	37	26
16	Forest360	Feilding	11-50	35	29
17	Verum Group	Hamilton	11-50	32	17
18	Geotheta Consulting Engineers And Scientists	Hastings	51-200	28	19
19	Soil & Rock Consultants	Auckland	51-200	27	19
20	SQN	Whangarei	11-50	27	13
21	Greenwood Associates Landscape Architecture	Christchurch	11-50	24	12
22	Novo Group Limited	Christchurch	11-50	22	21
23	Precise Consulting	Auckland	11-50	22	9
24	Tektus	Auckland	11-50	20	15
25	Chemsafety LTD	Wellington	11-50	18	14

Showing 25 of 228 environmental consultancy firms based in New Zealand

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,715 reachable decision-makers.

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Environmental consultancy firms based in New Zealand at a glance

As of Aug 28, 2026

1-10Median size (employees)

AucklandLargest hub · 62 HQs

182Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

156

11-50

51-200

201-500

1,001-5,000

Environmental consultancy firms by metro

Metro	Companies
Environmental consultancy firms in Auckland	62
Environmental consultancy firms in Christchurch	31
Environmental consultancy firms in Wellington	12
Environmental consultancy firms in Hamilton	12
Environmental consultancy firms in Tauranga	8
Environmental consultancy firms in Palmerston North	5
Environmental consultancy firms in Invercargill	5

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “environmental consultancy firms”, with match quality audited by blind human judging, and headquartered in New Zealand.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many environmental consultancy firms are there based in New Zealand?

There are 228 environmental consultancy firms headquartered in New Zealand as of August 2026 (RevenueBase).

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 consultancy firms?

Auckland leads with 62 headquartered companies, followed by Christchurch (31) and Wellington (12).

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 1,715 verified decision-maker contacts tracked across these 228 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.