Company lists · Data refreshed September 2026

Top 25 Environmental consultancy firms based in Belgium

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

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 276 companies tracked

RevenueBase identified 276 environmental consultancy firms headquartered in Belgium as of September 2026 and tracks 3,525 professional contacts across them, including 1,753 with verified work emails and 47 with mobile numbers. Brussels is the largest hub.

This list covers environmental consultancy firms 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 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

276Companies

3,525Contacts tracked

1,753Verified emails

47Mobile numbers

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The 25 largest environmental consultancy firms based in Belgium

Ranked by team size

Top 25 of 276 environmental consultancy firms based in Belgium, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to environmental consultancy 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	SBB Accountants & Advisors	Partial evidence	Leuven, Belgium	501-1,000	532 contacts →
	Partial evidence “Welcome to SBB, a firm of experienced accountants and tax consultants with 30 branches in Belgium.” Source: RevenueBase Database · checked Sep 2, 2026
2	Antea Group Belgium	Partial evidence	Namur, Belgium	201-500	220 contacts →
	Partial evidence “Antea Group is an international consulting and engineering firm, specializing in full-service solutions in the fields of environment, infrastructure, public space, and water.” Source: RevenueBase Database · checked Sep 2, 2026
3	IMDC	Partial evidence	Namur, Belgium	51-200	130 contacts →
	Partial evidence “IMDC (International Marine and Dredging Consultants) offers highly skilled expertise to tackle a wide range of water-related issues.” Source: RevenueBase Database · checked Sep 2, 2026
4	AESA	Partial evidence	Brussels, Belgium	51-200	127 contacts →
	Partial evidence “AESA is a leading European management consultancy, providing technical assistance and project management services in Low and Middle income countries as well as in Transition…” Source: RevenueBase Database · checked Sep 2, 2026
5	Trevi NV	Partial evidence	Grobbendonk, Belgium	51-200	101 contacts →
	Partial evidence “Trevi Environmental Solutions is a Belgian environmental technology company.” Source: RevenueBase Database · checked Sep 2, 2026
6	Agriconsulting	Indirect evidence	Brussels, Belgium	51-200	87 contacts →
	Indirect evidence “Consulenza a 360° per imprese e istituzioni nel settore agricolo, nella gestione del territorio e nello sviluppo sostenibile.” Source: RevenueBase Database · checked Sep 2, 2026
7	RSK Benelux BV	Strong evidence	Westerlo, Belgium	51-200	86 contacts →
	Strong evidence “RSK Benelux bvba is an evolving and innovative environmental consultancy with 8 offices in Belgium.” Source: RevenueBase Database · checked Sep 2, 2026
8	Sertius Environmental And Safety Services	Partial evidence	Louvain-La-Neuve Brabant, Belgium	51-200	82 contacts →
	Partial evidence “Sertius and its multidisciplinary team offer their services in the fields of environment and security- Legal advices and administrative support: Practical advices regarding…” Source: RevenueBase Database · checked Sep 2, 2026
9	Tauw Belgium	Partial evidence	Leuven Wijgmaal, Belgium	51-200	80 contacts →
	Partial evidence “We shape a vital living environment.” Source: RevenueBase Database · checked Sep 2, 2026
10	Abo-Group Environment	Partial evidence	Gent, Belgium	501-1,000	65 contacts →
	Partial evidence “ABO-Group Environment has developed into a cluster of integrated environmental companies specialized in testing and engineering in various sectors such as soil, environment…” Source: RevenueBase Database · checked Sep 2, 2026
11	VVA Group	Indirect evidence	Brussels, Belgium	51-200	64 contacts →
	Indirect evidence “Valdani Vicari & Associati (VVA), established in 1992, is a consulting company based in Milan with a team of professionals including economists, sociologists, political…” Source: RevenueBase Database · checked Sep 2, 2026
12	Emelia	Partial evidence	Roeselare, Belgium	51-200	52 contacts →
	Partial evidence “Emelia is the Belgian study and consultancy firm resulting from the merger of BOVA ENVIRO+ and Esher.” Source: RevenueBase Database · checked Sep 2, 2026
13	Nexio Projects	Partial evidence	Zaventem, Belgium	11-50	50 contacts →
	Partial evidence “Nexio Projects is an international consultancy firm, helping organisations reach their sustainability ambitions.” Source: RevenueBase Database · checked Sep 2, 2026
14	Aries Consultants	Partial evidence	Bierges, Belgium	11-50	50 contacts →
	Partial evidence “Créée en 1989 par l’architecte Luc-Georges Dubrulle, la société ARIES Consultants a été reprise en 2012 par Gilles Ledent et Christopher Goffard.” Source: RevenueBase Database · checked Sep 2, 2026
15	Envirosoil NV	Indirect evidence	Gent, Belgium	51-200	44 contacts →
	Indirect evidence “Envirosoil \| Grondige expertise in milieuhygiënisch bodemonderzoek & milieuadvies Envirosoil is een gespecialiseerd adviesbureau in bodemonderzoek en bodemsanering, met meer dan…” Source: RevenueBase Database · checked Sep 2, 2026
16	Universoil	Indirect evidence	Charleroi, Belgium	11-50	41 contacts →
	Indirect evidence “Universoil, your partner in investigating soil pollution.” Source: RevenueBase Database · checked Sep 2, 2026
17	Abesco	Indirect evidence	Glabbeek, Belgium	11-50	39 contacts →
	Indirect evidence “Bij ABESCO nemen we geen genoegen met theorie.” Source: RevenueBase Database · checked Sep 2, 2026
18	Sher Ingénieurs-Conseils	Partial evidence	Vedrin, Belgium	11-50	38 contacts →
	Partial evidence “SHER Ingénieurs-Conseils, a Belgian engineering consultancy office and member of the Artelia Group, provides its services worldwide for projects related to water, human and animal…” Source: RevenueBase Database · checked Sep 2, 2026
19	Profex Part Of UEG	Indirect evidence	Wetteren, Belgium	51-200	36 contacts →
	Indirect evidence “Bij ons draait alles om jou als ondernemer.” Source: RevenueBase Database · checked Sep 2, 2026
20	Consultes	Indirect evidence	Antwerp, Belgium	11-50	34 contacts →
	Indirect evidence “Consultes is een allround partner voor bedrijven op vlak van milieu, preventie, energie en duurzaamheid.” Source: RevenueBase Database · checked Sep 2, 2026
21	Geolys	Indirect evidence	Belgium	11-50	32 contacts →
	Indirect evidence “Bureau d'études en environnement dans les secteurs de l'eau, du sol et de l'énergie.” Source: RevenueBase Database · checked Sep 2, 2026
22	RDC Environment	Partial evidence	Bruxelles, Belgium	11-50	31 contacts →
	Partial evidence “Our mission is to support decision-making towards a sustainable world." – Bernard De Caevel, Founder of RDC Environment For more than 30 years, RDC Environment has been helping…” Source: RevenueBase Database · checked Sep 2, 2026
23	DR EA M	Indirect evidence	Belgium	11-50	28 contacts →
	Indirect evidence “DR(EA)²M est un bureau d’études spécialisé dans les matières du développement territorial, de l’aménagement urbain et paysager, de l’environnement, de l’architecture et de…” Source: RevenueBase Database · checked Sep 2, 2026
24	LDR Advocaten In Omgevingsrecht	Indirect evidence	Oostkamp, Belgium	11-50	27 contacts →
	Indirect evidence “LDR is het grootste advocatenkantoor van Vlaanderen dat actief is op het gebied van milieurecht.” Source: RevenueBase Database · checked Sep 2, 2026
25	ORA Group	Indirect evidence	Wevelgem, Belgium	11-50	26 contacts →
	Indirect evidence “Waarom kiezen voor de ORA Group?” Source: RevenueBase Database · checked Sep 2, 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 consultancy 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 consultancy firms.
Partial evidence: Its own public description names part of environmental consultancy firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental consultancy 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 276 environmental consultancy firms based in Belgium

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Environmental consultancy firms based in Belgium at a glance

As of Sep 2, 2026

49.7%Verified-email coverage

1.3%Mobile-number coverage

12.8Average contacts per company

1-10Median size (employees)

10.1%Largest-city concentration · Brussels

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

184

11-50

51-200

201-500

501-1,000

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 consultancy 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 Belgium whose own description of what they do matches “environmental consultancy 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 consultancy 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 consultancy firms, 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, 1,753 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 2, 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 consultancy firms by metro

Environmental consultancy firms in Brussels28

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 consultancy 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 consultancy firms are there based in Belgium?

RevenueBase identified 276 environmental consultancy firms 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?

SBB Accountants & Advisors, headquartered in Leuven, tops this list with the largest team on record.

Which city has the most environmental consultancy firms?

Brussels leads with 28 headquartered companies, followed by Gent (9) and Antwerp (8).

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 1,753 verified decision-maker contacts tracked across these 276 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 2, 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.