Company lists · Data refreshed September 2026

Top 25 Sustainability auditors based in Belgium

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

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 61 companies tracked

RevenueBase identified 61 sustainability auditors headquartered in Belgium as of September 2026 and tracks 424 professional contacts across them, including 166 with verified work emails. Brussels is the largest hub.

This list covers sustainability auditors headquartered in Belgium, 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

61Companies

424Contacts tracked

166Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest sustainability auditors based in Belgium

Ranked by team size

Top 25 of 61 sustainability auditors based in Belgium, 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	Certisys	Indirect evidence	Bruxelles, BelgiumHQ checked Sep 22, 2026	51-200	41 contacts →
	Indirect evidence “CERTISYS®, your reference for organic and sustainable certification Who are we?” Source: RevenueBase Database · checked Sep 22, 2026
2	Prevom	Indirect evidence	Rumst, BelgiumHQ checked Sep 22, 2026	11-50	38 contacts →
	Indirect evidence “Bij Prevom maken we er steevast onze missie van om dag in dag uit bedrijven en individuen te helpen groeien en het beste uit zichzelf te halen.” Source: RevenueBase Database · checked Sep 22, 2026
3	Climatecamp	Indirect evidence	Antwerp, BelgiumHQ checked Sep 22, 2026	11-50	36 contacts →
	Indirect evidence “Many companies set ambitious Scope 3 targets, yet without reliable primary data they struggle to focus on what matters most and prove real impact.” Source: RevenueBase Database · checked Sep 22, 2026
4	Greenomy	Partial evidence	BelgiumHQ checked Sep 22, 2026	51-200	22 contacts →
	Partial evidence “Sustainability reporting software for companies and financial institutions (EU Taxonomy, CSRD, and other emerging ESG standards)-” Source: RevenueBase Database · checked Sep 22, 2026
5	Studibo	Indirect evidence	Merelbeke, BelgiumHQ checked Sep 22, 2026	501-1,000	19 contacts →
	Indirect evidence “Studibo is a specialist in multidisciplinary solutions and certification.” Source: RevenueBase Database · checked Sep 22, 2026
6	The Ecological Entrepreneur	Partial evidence	Antwerp, BelgiumHQ checked Sep 22, 2026	11-50	15 contacts →
	Partial evidence “The Ecological Entrepreneur is a sustainability advisor specialised in guiding companies, sector federations and organisations, in the transition towards sustainable compliant…” Source: RevenueBase Database · checked Sep 22, 2026
7	Cplus Gouvernance Durable	Indirect evidence	Sart-bernard, BelgiumHQ checked Sep 22, 2026	11-50	13 contacts →
	Indirect evidence “La société Cplus sprl est une structure dynamique spécialisée dans le conseil, l’audit et la formation en MANAGEMENT de la Qualité; de la Sécurité Alimentaire humaine et animale…” Source: RevenueBase Database · checked Sep 22, 2026
8	Advista	Indirect evidence	Louvain-la-neuve, BelgiumHQ checked Sep 22, 2026	1-10	13 contacts →
	Indirect evidence “ADVISTA est un bureau d’études et de conseils en environnement et développement durable.” Source: RevenueBase Database · checked Sep 22, 2026
9	CAP Conseil	Indirect evidence	Wavre, BelgiumHQ checked Sep 22, 2026	1-10	13 contacts →
	Indirect evidence “CAP CONSEIL is a private company specialized in research and consultancy services relating to social responsibility, sustainable development, governance and business ethics.” Source: RevenueBase Database · checked Sep 22, 2026
10	Resultx	Partial evidence	Everberg, BelgiumHQ checked Sep 22, 2026	1-10	12 contacts →
	Partial evidence “Sustainability has always been sold wrong.” Source: RevenueBase Database · checked Sep 22, 2026
11	SURA	Indirect evidence	Kortrijk, BelgiumHQ checked Sep 22, 2026	1-10	11 contacts →
	Indirect evidence “Wij helpen bedrijven versnellen richting een duurzame toekomst!” Source: RevenueBase Database · checked Sep 22, 2026
12	Betterbusiness B Corp	Partial evidence	Brussels, BelgiumHQ checked Sep 22, 2026	1-10	10 contacts →
	Partial evidence “BetterBusiness' mission is to support micro and small businesses in integrating sustainability at the heart of their growth strategy.” Source: RevenueBase Database · checked Sep 22, 2026
13	Smart2circle	Indirect evidence	Liège, BelgiumHQ checked Sep 22, 2026	1-10	9 contacts →
	Indirect evidence “Smart2Circle empowers companies and organizations to contribute to a carbon neutral world in 2050.” Source: RevenueBase Database · checked Sep 22, 2026
14	Studio D	Indirect evidence	Leuven, BelgiumHQ checked Sep 22, 2026	1-10	8 contacts →
	Indirect evidence “Duurzaamheidsbeleid & advies Studio D helpt u met het opstellen van een duurzaamheidsstrategie en -beleid.” Source: RevenueBase Database · checked Sep 22, 2026
15	Batigrade	Indirect evidence	Fernelmont, BelgiumHQ checked Sep 22, 2026	1-10	8 contacts →
	Indirect evidence “BatiGrade est un bureau d’études spécialisé dans l’ ́́ des bâtiments en, actif tant dans le secteur ́ que et.” Source: RevenueBase Database · checked Sep 22, 2026
16	Revalor	Partial evidence	Nivelles, BelgiumHQ checked Sep 22, 2026	1-10	7 contacts →
	Partial evidence “Revalor supports public and private companies in meeting the sustainability and governance requirements of IT investments.” Source: RevenueBase Database · checked Sep 22, 2026
17	E-Luse	Indirect evidence	Harelbeke, BelgiumHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “E-Luse assists large (industrial) companies and SMEs in their mission to make their business more sustainable.” Source: RevenueBase Database · checked Sep 22, 2026
18	Willow Sustainability	Partial evidence	Brussels, BelgiumHQ checked Sep 22, 2026	1-10	4 contacts →
	Partial evidence “Willow is a sustainability advisory firm working with awesome companies in a variety of fascinating fields, from impact investing to retail, fashion, and telecommunications.” Source: RevenueBase Database · checked Sep 22, 2026
19	Moonfish	Indirect evidence	Lummen, BelgiumHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence “Gedreven door onze liefde voor de planeet en het geloof dat we een positieve verandering teweeg kunnen brengen, helpen wij bedrijven bij het van, het van hun, en het van hun -…” Source: RevenueBase Database · checked Sep 22, 2026
20	livingcomfortable.be	Indirect evidence	Beveren, BelgiumHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence “TECHNIEK - ENERGIE - MILIEU EPB verslaggeving en EPC NR LivingComfortable.be staat garant voor uitstekend dienstverlening.” Source: RevenueBase Database · checked Sep 22, 2026
21	Durably	Partial evidence	Ghent, BelgiumHQ checked Sep 22, 2026	1-10	2 contacts →
	Partial evidence “Durably is an impact-driven company that matches passionate people with companies and organisations that see sustainability as a key element of their business model.” Source: RevenueBase Database · checked Sep 22, 2026
22	Anticip Consult	Indirect evidence	Sprimont, BelgiumHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “Depuis ANTICIP CONSULT conseille, audite, forme et accompagne les entreprises dans leurs projets d'organisation et de management, principalement dans les domaines de la qualité…” Source: RevenueBase Database · checked Sep 22, 2026
23	Goact BV	Partial evidence	Brussels, BelgiumHQ checked Sep 22, 2026	1-10	2 contacts →
	Partial evidence “GoAct is an independent sustainability advisory group with extensive business experience.” Source: RevenueBase Database · checked Sep 22, 2026
24	RS Quality Consulting	Indirect evidence	Alken, BelgiumHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “RS-Q accelerates organisations in their journey towards sustainable excellence and quality.” Source: RevenueBase Database · checked Sep 22, 2026
25	Circle DEV	Partial evidence	Waterloo, BelgiumHQ checked Sep 22, 2026	1-10	1 contacts →
	Partial evidence “Your benefits to progress your sustainability strategy with Circle Dev- A PROFITABLE approach: my long experience in the industry gives me a sense of reality.” 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 61 sustainability auditors based in Belgium

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 166 reachable decision-makers.

Free signup · no credit card

View the full list →

Sustainability auditors based in Belgium at a glance

As of Sep 22, 2026

39.2%Verified-email coverage

7.0Average contacts per company

1-10Median size (employees)

11.5%Largest-city concentration · Brussels

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 61 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 Belgium 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 Belgium 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, 166 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.

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 Belgium?

RevenueBase identified 61 sustainability auditors headquartered in Belgium 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?

Certisys, headquartered in Bruxelles, tops this list with the largest team on record.

Which city has the most sustainability auditors?

Brussels leads with 7 headquartered companies, followed by Liege (5) and Bruxelles (4).

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 166 verified decision-maker contacts tracked across these 61 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.

Ready to reach these companies? Verified emails and direct dials for all 61 sustainability auditors based in Belgium. Start with a free account, no credit card.

Download this list →

Related lists

Sustainability auditors by geography

Browse the directory

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.