Company lists · Data verified August 2026

Top 25 Ecological consulting firms based in the Netherlands

Name: Ecological consulting firms based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 334 companies tracked

There are 334 ecological consulting firms headquartered in the Netherlands (RevenueBase, August 2026). RevenueBase tracks 9,630 professional contacts across them, including 1,452 with verified work emails and 465 with mobile numbers. Amsterdam is the largest hub.

This list covers ecological consulting firms headquartered in the Netherlands, 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.

334Companies

9,630Contacts tracked

1,452Verified emails

465Mobile numbers

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The 25 largest ecological consulting firms based in the Netherlands

Ranked by team size

Top 25 of 334 ecological consulting firms based in the Netherlands, 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	Waardenburg Ecology	Ec	51-200	141	76
2	ATKB	Cd	51-200	115	82
3	teia.nl	Wd	51-200	113	14
4	Eelerwoude	Bb	51-200	111	73
5	SGI Compliance Nederland	Rotterdam	51-200	99	27
6	Ecogroen	Meppel	51-200	98	61
7	Geofoxx	Tilburg	51-200	80	39
8	Tritium Advies	Vn	51-200	71	49
9	Ecologica	n/a	11-50	68	4
10	Alphaplan Adviseurs In Bouwen	Bz	51-200	66	29
11	Econsultancy Part Of Sweco	Swalmen	201-500	60	22
12	ECO Reest	Ad	51-200	57	26
13	Tijhuis Ingenieurs BV	Amersfoort	51-200	54	44
14	Blom Ecologie	Cd	11-50	52	31
15	Altenburg & Wymenga Ecologisch Onderzoek	Xh	51-200	51	39
16	Nladviseurs	Arnhem	11-50	50	29
17	Smit Groenadvies	Schagen	11-50	47	18
18	VAN DER Goes EN Groot	Kwintsheul	51-200	44	27
19	RSK Netherlands	Ijsselstein	11-50	41	31
20	Ecoresult B.V	Veenendaal	11-50	41	22
21	M P	Es	11-50	38	20
22	Regelink Ecologie & Landschap	Eg	11-50	37	20
23	Ortageo	Rolde	11-50	36	24
24	Ecologisch Adviesbureau Viridis BV	Culemborg	11-50	31	14
25	Unitura	Je	11-50	31	13

Showing 25 of 334 ecological consulting firms based in the Netherlands

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Ecological consulting firms based in the Netherlands at a glance

As of Aug 28, 2026

1-10Median size (employees)

AmsterdamLargest hub · 16 HQs

465Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

238

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Ecological consulting firms by metro

Metro	Companies
Ecological consulting firms in Amsterdam	16
Ecological consulting firms in Rotterdam	10
Ecological consulting firms in Deventer	7
Ecological consulting firms in Groningen	6
Ecological consulting firms in Utrecht	6
Ecological consulting firms in Veenendaal	5
Ecological consulting firms in Arnhem	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 “ecological consulting firms”, with match quality audited by blind human judging, and headquartered in the Netherlands.
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; 2 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 ecological consulting firms are there based in the Netherlands?

There are 334 ecological consulting firms headquartered in the Netherlands as of August 2026 (RevenueBase).

What is the largest company on this list?

Waardenburg Ecology, headquartered in Ec, tops this list with the largest team on record.

Which city has the most ecological consulting firms?

Amsterdam leads with 16 headquartered companies, followed by Rotterdam (10) and Deventer (7).

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 1,452 verified decision-maker contacts tracked across these 334 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.