Company lists · Data refreshed September 2026

Top 25 Green certification providers based in Germany

Name: Green certification providers based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 60 companies tracked

RevenueBase identified 60 green certification providers headquartered in Germany as of September 2026 and tracks 664 professional contacts across them, including 254 with verified work emails. Berlin is the largest hub.

This list covers green certification providers 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

60Companies

664Contacts tracked

254Verified emails

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The 25 largest green certification providers based in Germany

Ranked by team size

Top 25 of 60 green certification providers 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 green certification providers: 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	Dgnb German Sustainable Building Council	Indirect evidence	Stuttgart, GermanyHQ checked Sep 19, 2026	51-200	109 contacts →
	Indirect evidence “The German Sustainable Building Council (DGNB) is a central knowledge platform for sustainable building.” Source: RevenueBase Database · checked Sep 19, 2026
2	Gutcert Gmbh	Partial evidence	Berlin, GermanyHQ checked Sep 19, 2026	51-200	91 contacts →
	Partial evidence “In 1997, the GUTcertifizierungsgesellschaft für Managementsysteme (GUT Certification Company for Management Systems) was founded - separated and spun off from the engineering and…” Source: RevenueBase Database · checked Sep 19, 2026
3	Ecocert Germany & Switzerland	Partial evidence	Konstanz, GermanyHQ checked Sep 19, 2026	51-200	71 contacts →
	Partial evidence “For almost 30 years, Ecocert supports companies in implementing and promoting sustainable practices with certification and training.” Source: RevenueBase Database · checked Sep 19, 2026
4	CERES	Partial evidence	Hersbruck, GermanyHQ checked Sep 19, 2026	51-200	70 contacts →
	Partial evidence “Our name: CERES - CERtification of Environmental Standards refers to "Ceres", the ancient Roman goddess of agriculture, who was equivalent to the Greek goddess Demeter.” Source: RevenueBase Database · checked Sep 19, 2026
5	Gsci Services Pvt. LTD	Partial evidence	Hamburg, GermanyHQ checked Sep 19, 2026	11-50	35 contacts →
	Partial evidence “GSCI Services has been incepted with a vision to provide access to global sustainability certification.” Source: RevenueBase Database · checked Sep 19, 2026
6	Omnicert Umweltgutachter Gmbh	Indirect evidence	Bad Abbach, GermanyHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “OmniCert is an environmental services company based out of Bad Abbach, Bavaria, Germany.” Source: RevenueBase Database · checked Sep 19, 2026
7	GFA Certification Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 19, 2026	11-50	23 contacts →
	Partial evidence “GFA Certification GmbH, based in Hamburg, Germany, is one of the leading and highly specialized certification bodies in the fields of sustainability certification.” Source: RevenueBase Database · checked Sep 19, 2026
8	Hoinka Gmbh	Partial evidence	Stuttgart, GermanyHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “HOINKA GmbH ist ein Unternehmen, das sich auf Leistungen rund um das nachhaltige Bauen (Green Building) spezialisiert hat.” Source: RevenueBase Database · checked Sep 19, 2026
9	Institut Bauen UND Umwelt E.V	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “IBU was created out of an initiative of manufacturers of construction products and components who decided to support the demand for more sustainability in the construction sector.” Source: RevenueBase Database · checked Sep 19, 2026
10	MKH Greenergy Cert Gmbh	Indirect evidence	Hamburg, GermanyHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “MKH Greenergy Cert GmbH is a renewables and environment company based out of Kühnehöfe 3, Hamburg, Germany.” Source: RevenueBase Database · checked Sep 19, 2026
11	ESC Cert Gmbh	Partial evidence	Kassel, GermanyHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “ESC focuses on the certification of companies according to international standards such as quality, safety and environmental management systems.” Source: RevenueBase Database · checked Sep 19, 2026
12	Verico SCE	Partial evidence	Langenbach, GermanyHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “Die verico SCE offers certification, verification and consulting services related to the EU-ETS, energy management systems (ISO & ISO 16247 ), environmental management systems…” Source: RevenueBase Database · checked Sep 19, 2026
13	Redcert Gmbh	Indirect evidence	Bonn, GermanyHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “REDcert wurde am 26.” Source: RevenueBase Database · checked Sep 19, 2026
14	Zer-Qms Zertifizierungsstelle Gmbh	Indirect evidence	Köln, GermanyHQ checked Sep 19, 2026	11-50	8 contacts →
	Indirect evidence “Die ZER-QMS, Zertifizierungsstelle, Qualitäts- und Umweltgutachter GmbH wurde im August 1994 als Verein ins Leben gerufen.” Source: RevenueBase Database · checked Sep 19, 2026
15	Relibell Zertifizierungsgesellschaft MBH	Indirect evidence	Erfurt, GermanyHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Wir sind eine unparteiische Zertifizierungsstelle mit Sitz in Erfurt – im grünen Herzen Deutschlands.” Source: RevenueBase Database · checked Sep 19, 2026
16	Gbci Europe	Strong evidence	Munich, GermanyHQ checked Sep 19, 2026	1-10	6 contacts →
	Strong evidence “Green Business Certification Inc.(GBCI) is the world's leading sustainability and building health certification body.” Source: RevenueBase Database · checked Sep 19, 2026
17	Infinity Certification Gmbh	Indirect evidence	22419 Hamburg, GermanyHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “Anlagenzertifikat und Konformitätserklärung für erneuerbare Energieanlagen (z.” Source: RevenueBase Database · checked Sep 19, 2026
18	Bregau	Indirect evidence	Bremen, GermanyHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “Impressum: Datenschutz: Wir unterstützen Unternehmen bei der Erfüllung rechtlicher Auflagen in den Bereichen Umwelt- und Immissionsschutz, Nachhaltigkeit, Energie…” Source: RevenueBase Database · checked Sep 19, 2026
19	Qscert Germany	Indirect evidence	München, GermanyHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “Zertifizierung von Managementsystemen nach internationalen Standards ISO 9001, ISO 14001, CSR 26001 Aus- und Weiterbildung für Auditoren, Workshops, Seminare.” Source: RevenueBase Database · checked Sep 19, 2026
20	Cleaner WEB	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Wir zertifizieren klimabewusste Websites mit dem °Cleaner-Web-Siegel.” Source: RevenueBase Database · checked Sep 19, 2026
21	Goldschimmer Gmbh	Partial evidence	Bamberg, GermanyHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “Green Building Zertifizierungen auf höchstem Niveau seit über 12 Jahren.” Source: RevenueBase Database · checked Sep 19, 2026
22	KPI	Indirect evidence	München, GermanyHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Nachhaltes Bauen messbar machen - durch Zertifizierungen nach DGNB, LEED, BREEAM, WELL, WiredScore, SmartScore - für Neubauten, Bestandsprojekte und Quartiere.” Source: RevenueBase Database · checked Sep 19, 2026
23	International Certification Management Gmbh	Partial evidence	Oberschneiding, GermanyHQ checked Sep 19, 2026	11-50	2 contacts →
	Partial evidence “International Certification Management GmbH is a management certification body based out of Straubinger Strasse 19, 94363 Oberschneiding, Germany.” Source: RevenueBase Database · checked Sep 19, 2026
24	ISO Schmiede Gmbh	Indirect evidence	Ettlingen, GermanyHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Mit uns zur Zertifizierung - Mit der Einführung eines Managementsystems gewinnt das Unternehmen in vielerlei Hinsicht, von reinen Prozess- oder Strukturfaktoren bis hin zu…” Source: RevenueBase Database · checked Sep 19, 2026
25	Becatur Beratungsgesellschaft FÜR Nachhaltiges Bauen MBH	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Becatur Beratungsgesellschaft für nachhaltiges Bauen mbH Wir unterstützen Bauunternehmen, Bauträger und Projektentwickler dabei, QNG Projekte wirtschaftlich, strukturiert und…” Source: RevenueBase Database · checked Sep 19, 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: green certification providers. 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 green certification providers.
Partial evidence: Its own public description names part of green certification providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name green certification providers. 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 60 green certification providers based in Germany

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Green certification providers based in Germany at a glance

As of Sep 19, 2026

38.3%Verified-email coverage

11.1Average contacts per company

1-10Median size (employees)

13.3%Largest-city concentration · Berlin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 60 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 green certification providers, 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 “green certification providers”. 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 green certification providers), 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 green certification providers, 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, 254 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 green certification providers, 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 green certification providers are there based in Germany?

RevenueBase identified 60 green certification providers 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?

Dgnb German Sustainable Building Council, headquartered in Stuttgart, tops this list with the largest team on record.

Which city has the most green certification providers?

Berlin leads with 8 headquartered companies, followed by Hamburg (6) and Stuttgart (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 254 verified decision-maker contacts tracked across these 60 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.