Company lists · Data refreshed September 2026

Top 25 Sustainability auditors based in the Netherlands

Name: Sustainability auditors based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 216 companies tracked

RevenueBase identified 216 sustainability auditors headquartered in the Netherlands as of September 2026 and tracks 2,034 professional contacts across them, including 877 with verified work emails. Amsterdam is the largest hub.

This list covers sustainability auditors headquartered in the Netherlands, 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 22, 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 22, 2026 86% judged on-target in blind review

216Companies

2,034Contacts tracked

877Verified emails

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The 25 largest sustainability auditors based in the Netherlands

Ranked by team size

Top 25 of 216 sustainability auditors based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability auditors: 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	Kader Group	Indirect evidence	Zeist, NetherlandsHQ checked Sep 22, 2026	201-500	290 contacts →
	Indirect evidence “Kader Group verbetert de kwaliteit, veiligheid en duurzaamheid van organisaties, zodat een ieder goed kan zorgen voor mens, milieu en maatschappij.” Source: RevenueBase Database · checked Sep 22, 2026
2	Global Reporting Initiative GRI	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 22, 2026	51-200	249 contacts →
	Indirect evidence “Global Reporting Initiative (GRI) is the independent nonprofit organization that is the architect of the common global language to assess and report on environmental, social and…” Source: RevenueBase Database · checked Sep 22, 2026
3	CENSO	Indirect evidence	Nieuwegein, NetherlandsHQ checked Sep 22, 2026	51-200	116 contacts →
	Indirect evidence “Wij zijn dé duurzame adviseurs van zakelijk Nederland.” Source: RevenueBase Database · checked Sep 22, 2026
4	Foundation Fssc	Indirect evidence	’s-hertogenbosch, NetherlandsHQ checked Sep 22, 2026	51-200	109 contacts →
	Indirect evidence “Foundation FSSC is a leading, non-profit, and independent Certification Scheme Owner to provide trust and impact to the consumer goods industry and related supply chains.” Source: RevenueBase Database · checked Sep 22, 2026
5	PRÉ Sustainability	Partial evidence	Le, NetherlandsHQ checked Sep 22, 2026	51-200	81 contacts →
	Partial evidence “At PRé, we help companies turn sustainability strategy into action, through fact-based consulting services, training and software solutions based on life cycle thinking.” Source: RevenueBase Database · checked Sep 22, 2026
6	Nexio Projects	Partial evidence	Rotterdam, NetherlandsHQ checked Sep 22, 2026	11-50	50 contacts →
	Partial evidence “Nexio Projects is an international consultancy firm, helping organisations reach their sustainability ambitions.” Source: RevenueBase Database · checked Sep 22, 2026
7	Anthesis Nl-Be	Indirect evidence	Utrecht, NetherlandsHQ checked Sep 22, 2026	1,001-5,000	39 contacts →
	Indirect evidence “Wij zijn Anthesis Nederland, voorheen Climate Neutral Group.” Source: RevenueBase Database · checked Sep 22, 2026
8	Stimular	Indirect evidence	Rotterdam, NetherlandsHQ checked Sep 22, 2026	11-50	36 contacts →
	Indirect evidence “Stimular is a foundation that aims to accelerate sustainable business.” Source: RevenueBase Database · checked Sep 22, 2026
9	SMK Stichting Milieukeur	Indirect evidence	Den Haag, NetherlandsHQ checked Sep 22, 2026	11-50	34 contacts →
	Indirect evidence “SMK has been working as a non-profit foundation for more than 25 years to make products and operations more sustainable.” Source: RevenueBase Database · checked Sep 22, 2026
10	Ecocert	Indirect evidence	Groningen, NetherlandsHQ checked Sep 22, 2026	11-50	33 contacts →
	Indirect evidence “Ecocert is energy!” Source: RevenueBase Database · checked Sep 22, 2026
11	2bhonest	Indirect evidence	Hilversum, NetherlandsHQ checked Sep 22, 2026	11-50	27 contacts →
	Indirect evidence “Wij geloven dat duurzame verandering ontstaat wanneer inhoud en intentie samenkomen.” Source: RevenueBase Database · checked Sep 22, 2026
12	GSES	Partial evidence	Rotterdam, NetherlandsHQ checked Sep 22, 2026	11-50	22 contacts →
	Partial evidence “The Global Sustainable Enterprise System (GSES) is worlds most used and trusted sustainability rating platform based on third party verified data.” Source: RevenueBase Database · checked Sep 22, 2026
13	Mps-Ecas	Indirect evidence	Honselersdijk, NetherlandsHQ checked Sep 22, 2026	51-200	21 contacts →
	Indirect evidence “MPS-ECAS carries out independent audits and assigns certificates with relevance to the horticulture sector to all links in the chain.” Source: RevenueBase Database · checked Sep 22, 2026
14	Think BIG ACT NOW	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 22, 2026	1-10	20 contacts →
	Indirect evidence “Think Big Act Now helps organisations with their sustainable transition.” Source: RevenueBase Database · checked Sep 22, 2026
15	Ecomatters BV	Partial evidence	Utrecht, NetherlandsHQ checked Sep 22, 2026	11-50	19 contacts →
	Partial evidence “Ecomatters is a sustainability consultancy that works closely with corporate and governmental clients to address their sustainability challenges.” Source: RevenueBase Database · checked Sep 22, 2026
16	The Overview Effect	Partial evidence	Amsterdam, NetherlandsHQ checked Sep 22, 2026	11-50	18 contacts →
	Partial evidence “The Overview Effect was founded by a mix of freelance sustainability consultants and seasoned ESG veterans who have successfully built a sustainability consultancy before.” Source: RevenueBase Database · checked Sep 22, 2026
17	VAN Voorst Consult	Indirect evidence	Amersfoort, NetherlandsHQ checked Sep 22, 2026	11-50	17 contacts →
	Indirect evidence “Van Voorst Consult geeft advies en begeleiding bij het opzetten en benutten van een effectief managementsysteem en certificering.” Source: RevenueBase Database · checked Sep 22, 2026
18	Hedgehog	Partial evidence	Amsterdam, NetherlandsHQ checked Sep 22, 2026	11-50	17 contacts →
	Partial evidence “Hedgehog provides the Hedgehog Carbon Platform, an easy-to-use carbon accounting platform, and sustainability consultancy aimed at SMEs, corporate businesses and local governments.” Source: RevenueBase Database · checked Sep 22, 2026
19	Arbo Rotterdam	Indirect evidence	Rotterdam, NetherlandsHQ checked Sep 22, 2026	11-50	16 contacts →
	Indirect evidence “ARBO Rotterdam is een landelijk opererend bedrijf dat gespecialiseerd is op het gebied van kwaliteit, arbo/veiligheid en milieu.” Source: RevenueBase Database · checked Sep 22, 2026
20	Intire	Partial evidence	The Hague, NetherlandsHQ checked Sep 22, 2026	11-50	15 contacts →
	Partial evidence “Intire is a boutique consultancy firm that is specialized in sustainability reporting, integrated reporting, and non-financial reporting.” Source: RevenueBase Database · checked Sep 22, 2026
21	Smarttrackers	Partial evidence	Amersfoort, NetherlandsHQ checked Sep 22, 2026	11-50	15 contacts →
	Partial evidence “SmartTrackers is the most comprehensive sustainability software.” Source: RevenueBase Database · checked Sep 22, 2026
22	NL Greenlabel	Indirect evidence	Megchelen, NetherlandsHQ checked Sep 22, 2026	11-50	15 contacts →
	Indirect evidence “NL Greenlabel staat voor een meetbaar duurzame leefomgeving.” Source: RevenueBase Database · checked Sep 22, 2026
23	Ecoreview	Partial evidence	Wijchen, NetherlandsHQ checked Sep 22, 2026	1-10	14 contacts →
	Partial evidence “EcoReview's expertise in Life Cycle Assessment is the foundation of our Sustainability Reporting and Certification services.” Source: RevenueBase Database · checked Sep 22, 2026
24	Factor Delta	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 22, 2026	11-50	13 contacts →
	Indirect evidence “Wij zijn Factor Delta.” Source: RevenueBase Database · checked Sep 22, 2026
25	TOSCA	Partial evidence	Hilversum, NetherlandsHQ checked Sep 22, 2026	1-10	12 contacts →
	Partial evidence “Tosca is a Tribe of sustainability professionals who combine their knowledge, insights and experience to jointly contribute to a sustainable world.” Source: RevenueBase Database · checked Sep 22, 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: sustainability auditors. 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 sustainability auditors.
Partial evidence: Its own public description names part of sustainability auditors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability auditors. 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 216 sustainability auditors based in the Netherlands

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Sustainability auditors based in the Netherlands at a glance

As of Sep 22, 2026

43.1%Verified-email coverage

9.4Average contacts per company

1-10Median size (employees)

13.9%Largest-city concentration · Amsterdam

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

175

11-50

51-200

201-500

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for Netherlands, so it is reported there. Company counts and contact totals on this page are exact for Netherlands, over 216 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 sustainability auditors, 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 the Netherlands whose own description of what they do matches “sustainability auditors”. 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 sustainability auditors), 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 sustainability auditors, and records with no verified work email. Companies headquartered outside Netherlands 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, 877 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 22, 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.

Sustainability auditors by metro

Sustainability auditors in Amsterdam30

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 sustainability auditors, 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 sustainability auditors are there based in the Netherlands?

RevenueBase identified 216 sustainability auditors headquartered in the Netherlands 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?

Kader Group, headquartered in Zeist, tops this list with the largest team on record.

Which city has the most sustainability auditors?

Amsterdam leads with 30 headquartered companies, followed by Rotterdam (15) and Utrecht (10).

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 877 verified decision-maker contacts tracked across these 216 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 22, 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.