Company lists · Data verified August 2026

Top 25 Environmental consulting firms based in Belgium

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 225 companies tracked

There are 225 environmental consulting firms headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 2,329 professional contacts across them, including 1,191 with verified work emails and 36 with mobile numbers. Brussels is the largest hub.

This list covers environmental consulting firms headquartered in Belgium, 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.

225Companies

2,329Contacts tracked

1,191Verified emails

36Mobile numbers

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The 25 largest environmental consulting firms based in Belgium

Ranked by team size

Top 25 of 225 environmental consulting firms based in Belgium, 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	Antea Group Belgium	Namur	201-500	220	145
2	IMDC	Namur	51-200	130	85
3	Trevi NV	Grobbendonk	51-200	101	82
4	RSK Benelux BV	Westerlo	51-200	86	68
5	Sertius Environmental And Safety Services	Louvain-La-Neuve Brabant	51-200	82	62
6	Tauw Belgium	Leuven Wijgmaal	51-200	80	50
7	Bureau D Etudes Lemaire	Grace-Hollogne	51-200	74	35
8	Abo-Group Environment	Gent	501-1,000	65	20
9	Nexio Projects	Zaventem	11-50	50	40
10	Envirosoil NV	Gent	51-200	44	27
11	Abesco	Glabbeek	11-50	39	23
12	Deme Environmental Contractors Decnv	Zwijndrecht	201-500	38	18
13	Consultes	Antwerp	11-50	34	29
14	Geolys	n/a	11-50	32	26
15	RDC Environment	Bruxelles	11-50	31	24
16	WIELS	Zwevegem	11-50	31	24
17	DR EA M	n/a	11-50	28	17
18	LDR Advocaten In Omgevingsrecht	Oostkamp	11-50	27	19
19	ORA Group	Wevelgem	11-50	26	20
20	Vitis Regulatory	Etterbeek Brussels	11-50	21	17
21	Raco By Studibo	Heusden-Zolder	11-50	21	17
22	Research And Solutions	Strombeek-Bever	11-50	21	1
23	Groep Dirk DE Groof	Putte	11-50	20	15
24	Axilium Group	Schilde	11-50	18	13
25	Veride	Geel	11-50	17	13

Showing 25 of 225 environmental consulting firms based in Belgium

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Environmental consulting firms based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

BrusselsLargest hub · 15 HQs

36Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

156

11-50

51-200

201-500

501-1,000

Environmental consulting firms by metro

Metro	Companies
Environmental consulting firms in Brussels	15
Environmental consulting firms in Gent	9
Environmental consulting firms in Antwerp	9
Environmental consulting firms in Bruxelles	7
Environmental consulting firms in Namur	5
Environmental consulting firms in Antwerpen	5
Environmental consulting firms in Liege	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 consulting firms”, with match quality audited by blind human judging, and headquartered in Belgium.
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 consulting firms are there based in Belgium?

There are 225 environmental consulting firms headquartered in Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

Antea Group Belgium, headquartered in Namur, tops this list with the largest team on record.

Which city has the most environmental consulting firms?

Brussels leads with 15 headquartered companies, followed by Gent (9) and Antwerp (9).

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 1,191 verified decision-maker contacts tracked across these 225 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.