Company lists · Data refreshed September 2026

Top 25 Environmental site assessment firms based in Germany

RevenueBase identified 101 environmental site assessment firms headquartered in Germany as of September 2026 and tracks 393 professional contacts across them, including 102 with verified work emails. Berlin is the largest hub.

This list covers environmental site assessment firms headquartered in Germany, 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 19, 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 19, 2026 86% judged on-target in blind review
101Companies
393Contacts tracked
102Verified emails
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The 25 largest environmental site assessment firms based in Germany

Ranked by team size
Top 25 of 101 environmental site assessment firms based in Germany, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental site assessment 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceBonn, GermanyHQ checked Sep 19, 202651-20017 contacts →

Indirect evidence

“Die KÜHN Geoconsulting® GmbH ist ein unabhängiges Gutachterbüro, das seit mehr als 50 Jahren in den Bereichen Baugrundberatung und Altlastensanierung tätig ist.”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceSchkeuditz, GermanyHQ checked Sep 19, 202651-20015 contacts →

Indirect evidence

“BUCHHOLZ + PARTNER ist ein Gutachter- und Sachverständigenbüro mit den Tätigkeitsschwerpunkten Ingenieurgeologie, Baugrunderkundung und Geotechnik sowie Umweltplanung und…”

Source: RevenueBase Database · checked Sep 19, 2026
3Partial evidenceMünster, GermanyHQ checked Sep 19, 202611-5013 contacts →

Partial evidence

“GEOlogik Wilbers & Oeder is an environmental services company based out of 98 Feldstiege, Münster, North Rhine-Westphalia, Germany.”

Source: RevenueBase Database · checked Sep 19, 2026
4Indirect evidenceWunstorf, GermanyHQ checked Sep 19, 20261-1013 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceHannover, GermanyHQ checked Sep 19, 202651-20012 contacts →

Indirect evidence

“Prof.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceNürnberg, GermanyHQ checked Sep 19, 202611-5011 contacts →

Indirect evidence

“Mit ihrem ganzheitlichen Ansatz innerhalb der Umweltbranche verfolgt die Rietzler Gruppe seit jeher eine auf Synergien und Interdisziplinarität beruhende Strategie.”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceLeipzig, GermanyHQ checked Sep 19, 202611-5010 contacts →

Indirect evidence

“Sie benötigen Beratung oder Hilfe bei Fragestellungen aus dem Umweltbereich?”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceBraunschweig, GermanyHQ checked Sep 19, 202651-2009 contacts →

Indirect evidence

“GGU Gesellschaft für Grundbau und Umwelttechnik GmbH ist ein spezialisiertes Ingenieurbüro mit Standorten in Braunschweig, Magdeburg, Öhringen und Schwerin.”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceMünchen, GermanyHQ checked Sep 19, 202611-508 contacts →

Indirect evidence

“Die BASE TECHNOLOGIES GmbH ist seit über 20 Jahren aktiv für Nachhaltigkeit und Transformation.”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceEching, GermanyHQ checked Sep 19, 202611-508 contacts →

Indirect evidence

“Die BLASY + MADER GmbH ist als gutachterliches Fachbüro tätig in den Leistungsbereichen Altlasten, Baugrund, Bausubstanz, Abwasser, Grundwasser und Umwelttechnik.”

Source: RevenueBase Database · checked Sep 19, 2026
11Partial evidenceFellbach, GermanyHQ checked Sep 19, 202611-507 contacts →

Partial evidence

“reconsite GmbH is an environmental services company based out of Auberlenstraße 13, Fellbach, Baden-Wuerttemberg, Germany.”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidencePähl, GermanyHQ checked Sep 19, 202611-506 contacts →

Indirect evidence

“Wir bieten unseren Kunden umfassende Beratungsleistungen und Lösungskompetenzen in den Bereichen Umweltgutachten, Umweltplanung, ökologische/naturschutzfachliche Objektplanung…”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceStuttgart, GermanyHQ checked Sep 19, 202611-505 contacts →

Indirect evidence

“Wir sind ein bundesweit tätiges Ingenieurbüro mit derzeit 9 Mitarbeitern in den Bereichen Altlastensanierung, Flächenrecycling, Hydrogeologie und Grundwassermodellierung mit Sitz…”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceNürnberg, GermanyHQ checked Sep 19, 202611-505 contacts →

Indirect evidence

“Envi Experts ist eine Umweltunternehmensberatung, die sich darauf spezialisiert hat, interdisziplinäre Themen im Umweltsektor, v.a.”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceKassel, GermanyHQ checked Sep 19, 20261-104 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceFreising, GermanyHQ checked Sep 19, 20261-104 contacts →

Indirect evidence

“C.”

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceBergisch Gladbach, GermanyHQ checked Sep 19, 202611-504 contacts →

Indirect evidence

“Das Ingenieurbüro Feldwisch begleitet seit über 25 Jahren öffentliche und private Auftraggeber bei Projekten an der Schnittstelle von Bodenschutz, Gewässerschutz, Altlasten und…”

Source: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceDüsseldorf, GermanyHQ checked Sep 19, 20261-103 contacts →

Indirect evidence

“Mehr Wirtschaftlichkeit für Industrie und Immobilienwirtschaft.”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceDüsseldorf, GermanyHQ checked Sep 19, 202611-503 contacts →

Indirect evidence

“Gegründet 1982 in Düsseldorf, arbeiten wir seit über 40 Jahren im Auftrag der Umwelt.”

Source: RevenueBase Database · checked Sep 19, 2026
20Indirect evidenceBerlin, GermanyHQ checked Sep 19, 202611-503 contacts →

Indirect evidence

“Die NovaBiotec Dr.”

Source: RevenueBase Database · checked Sep 19, 2026
21Indirect evidenceGermering, GermanyHQ checked Sep 19, 20261-103 contacts →

Indirect evidence

“Die Imakum GmbH ist als Ingenieurbüro für Immissionsschutz, Akustik und Umwelt tätig und bietet sowohl Planungs- und Beratungsleistungen als auch Messungen an.”

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceDonzdorf, GermanyHQ checked Sep 19, 20261-102 contacts →

Indirect evidence

“Ritter Und Vonier GmbH ist ein unabhängiges Ingenieurbüro für technischen Umweltschutz mit Sitz in der Poststraße 47/1, Donzdorf, Deutschland.”

Source: RevenueBase Database · checked Sep 19, 2026
23Indirect evidenceGrevenbroich, GermanyHQ checked Sep 19, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
24Indirect evidenceBiebesheim, GermanyHQ checked Sep 19, 20261-102 contacts →

Indirect evidence

“Mit der IK-Report-App bieten wir Ihrem Unternehmen eine digitale Lösung für Gutachten im Gebäudeschadstoffbereich.”

Source: RevenueBase Database · checked Sep 19, 2026
25Indirect evidenceCoesfeld, GermanyHQ checked Sep 19, 20261-102 contacts →

Indirect evidence

“Ist eine Umweltgutachter- und Sachverständigenorganisation für Umwelt, Sicherheits- und Qualitätsbelange in Coesfeld in Westfalen.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 101 environmental site assessment firms based in Germany

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Environmental site assessment firms based in Germany at a glance

As of Sep 19, 2026
26.0%Verified-email coverage
3.9Average contacts per company
1-10Median size (employees)
5.9%Largest-city concentration · Berlin
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
58
11-50
31
51-200
6
201-500
1

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 101 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 environmental site assessment 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 Germany whose own description of what they do matches “environmental site assessment 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 site assessment 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 site assessment firms, and records with no verified work email. Companies headquartered outside Germany 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, 102 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 19, 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 environmental site assessment 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 site assessment firms are there based in Germany?

RevenueBase identified 101 environmental site assessment firms headquartered in Germany 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?

Kühn Geoconsulting Gmbh, headquartered in Bonn, tops this list with the largest team on record.

Which city has the most environmental site assessment firms?

Berlin leads with 6 headquartered companies, followed by Bremen (3) and Munchen (3).

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 102 verified decision-maker contacts tracked across these 101 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 19, 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.