Company lists · Data refreshed September 2026

Top 25 Green building consultancies based in Germany

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 1,691 companies tracked

RevenueBase identified 1,691 green building consultancies headquartered in Germany as of September 2026 and tracks 15,513 professional contacts across them, including 6,172 with verified work emails. Berlin is the largest hub.

This list covers green building consultancies 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 28, 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 28, 2026 86% judged on-target in blind review

1,691Companies

15,513Contacts tracked

6,172Verified emails

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The 25 largest green building consultancies based in Germany

Ranked by team size

Top 25 of 1,691 green building consultancies based in Germany, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to green building consultancies: 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	Drees & Sommer	Indirect evidence	Stuttgart, GermanyHQ checked Sep 28, 2026	5,001-10,000	3,475 contacts →
	Indirect evidence “Uniting opposites to create a world we want to live in Drees & Sommer is a partner-managed, global consulting company providing a single source of consultation and implementation…” Source: RevenueBase Database · checked Sep 28, 2026
2	Fichtner	Indirect evidence	Stuttgart, GermanyHQ checked Sep 28, 2026	1,001-5,000	1,279 contacts →
	Indirect evidence “As a leading, independent engineering and consultancy enterprise active in the sectors of energy and infrastructure, Fichtner handles challenging projects in countries all over…” Source: RevenueBase Database · checked Sep 28, 2026
3	Porr Deutschland	Indirect evidence	München, GermanyHQ checked Sep 28, 2026	1,001-5,000	419 contacts →
	Indirect evidence “As a technology leader in planning and construction, PORR meets challenging individual customer requirements – safely and economically.” Source: RevenueBase Database · checked Sep 28, 2026
4	Adelphi	Indirect evidence	Berlin, GermanyHQ checked Sep 28, 2026	201-500	269 contacts →
	Indirect evidence “adelphi consult is a leading independent consultancy specialising in climate, environment and development.” Source: RevenueBase Database · checked Sep 28, 2026
5	Zetcon Ingenieure Gmbh	Indirect evidence	Bochum, GermanyHQ checked Sep 28, 2026	501-1,000	269 contacts →
	Indirect evidence “Von Planung bis Bauüberwachung in großen Infrastruktur-Projekten, von Architektur bis Erneuerbare Energien-ZETCON Ingenieure sind ganz vorne mit dabei in den Bereichen Energie…” Source: RevenueBase Database · checked Sep 28, 2026
6	ZWP Ingenieur-Ag	Indirect evidence	Köln, GermanyHQ checked Sep 28, 2026	201-500	169 contacts →
	Indirect evidence “We have a passion for innovative and sustainable concepts.” Source: RevenueBase Database · checked Sep 28, 2026
7	Westbridge Advisory	Indirect evidence	Frankfurt, GermanyHQ checked Sep 28, 2026	51-200	147 contacts →
	Indirect evidence “Wir sind ein führender europäischer Energie- und Nachhaltigkeitsberater in der Immobilienwirtschaft.” Source: RevenueBase Database · checked Sep 28, 2026
8	Integration Consulting Group	Indirect evidence	Frankfurt/ Main, GermanyHQ checked Sep 28, 2026	11-50	114 contacts →
	Indirect evidence “INTEGRATION is a consulting organization specialising in project management, with focus on developing countries and emerging markets.” Source: RevenueBase Database · checked Sep 28, 2026
9	Dgnb German Sustainable Building Council	Partial evidence	Stuttgart, GermanyHQ checked Sep 28, 2026	51-200	109 contacts →
	Partial evidence “The German Sustainable Building Council (DGNB) is a central knowledge platform for sustainable building.” Source: RevenueBase Database · checked Sep 28, 2026
10	Björnsen Beratende Ingenieure	Indirect evidence	Koblenz, GermanyHQ checked Sep 28, 2026	201-500	107 contacts →
	Indirect evidence “Wir sind Experten für Wasser, Umwelt, Ingenieurbau, Informatik, Energie und Architektur.” Source: RevenueBase Database · checked Sep 28, 2026
11	Kadawittfeldarchitektur	Indirect evidence	Aachen, GermanyHQ checked Sep 28, 2026	51-200	107 contacts →
	Indirect evidence “kadawittfeldarchitektur is involved in architecture, interior design, town planning and urban projects.” Source: RevenueBase Database · checked Sep 28, 2026
12	Vollack Gruppe	Indirect evidence	Karlsruhe, GermanyHQ checked Sep 28, 2026	201-500	93 contacts →
	Indirect evidence “Gebäude.” Source: RevenueBase Database · checked Sep 28, 2026
13	Kocks Consult Gmbh	Indirect evidence	Koblenz, GermanyHQ checked Sep 28, 2026	51-200	88 contacts →
	Indirect evidence “Mit hoher Individualkompetenz und Teamgeist erbringen wir seit 1946 weltweit interdisziplinäre Consulting Leistungen im Bauwesen.” Source: RevenueBase Database · checked Sep 28, 2026
14	Dfge Institute For Energy, Ecology And Economy	Indirect evidence	Greifenberg, GermanyHQ checked Sep 28, 2026	11-50	85 contacts →
	Indirect evidence “Seit unterstützt die DFGE Unternehmen dabei, Nachhaltigkeit messbar und strategisch nutzbar zu machen.” Source: RevenueBase Database · checked Sep 28, 2026
15	Rücker Schindele Beratende Ingenieure	Indirect evidence	München, GermanyHQ checked Sep 28, 2026	51-200	78 contacts →
	Indirect evidence “Kompetenz in Engineering Engagierte Profis für alle Ingenieurdienstleistungen auf dem Gebiet der Technischen Ausrüstung in unseren Geschäftsbereichen Energie und Umwelt, Gebäude…” Source: RevenueBase Database · checked Sep 28, 2026
16	Csmm-Architecture Matters	Indirect evidence	Munich, GermanyHQ checked Sep 28, 2026	51-200	77 contacts →
	Indirect evidence “CSMM entwickelt als Planungs- und Beratungspartner für Büroarchitektur und Arbeitsweltkonzeption zukunftsweisende Konzepte für Gebäude und Innenräume.” Source: RevenueBase Database · checked Sep 28, 2026
17	Baurconsult Architekten Ingenieure	Indirect evidence	Haßfurt, GermanyHQ checked Sep 28, 2026	201-500	73 contacts →
	Indirect evidence “BAURCONSULT als inhabergeführtes Architektur- und Ingenieurbüro setzt seit mehr als 60 Jahren einen klaren Fokus auf Nachhaltigkeit und vereint zu diesem Zweck Spezialisten aus…” Source: RevenueBase Database · checked Sep 28, 2026
18	B.A.U.M. Consult Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 28, 2026	51-200	69 contacts →
	Indirect evidence “B.A.U.M.” Source: RevenueBase Database · checked Sep 28, 2026
19	TNL Umwelt	Indirect evidence	Hungen, GermanyHQ checked Sep 28, 2026	51-200	64 contacts →
	Indirect evidence “Die TNL Umweltpanung ist als unabhängiges Netzwerk im Bereich Beratung und Umsetzung von Umweltfachplanungen bundesweit und im benachbarten Ausland tätig.” Source: RevenueBase Database · checked Sep 28, 2026
20	Transsolar Klimaengineering	Indirect evidence	Stuttgart, GermanyHQ checked Sep 28, 2026	51-200	64 contacts →
	Indirect evidence “High Comfort – Low Impact Transsolar KlimaEngineering ist ein international tätiges Ingenieurbüro.” Source: RevenueBase Database · checked Sep 28, 2026
21	Kohlbecker Gesamtplan Gmbh	Indirect evidence	Gaggenau, GermanyHQ checked Sep 28, 2026	51-200	62 contacts →
	Indirect evidence “Kohlbecker was founded by Karl Kohlbecker in 1930.” Source: RevenueBase Database · checked Sep 28, 2026
22	SCC Scientific Consulting Company, Part Of Ramboll	Indirect evidence	Bad Kreuznach, GermanyHQ checked Sep 28, 2026	n/a	61 contacts →
	Indirect evidence “SCC is now part of Ramboll, a global architecture, engineering and consultancy company, creating sustainable solutions across energy, real estate, transport, water, waste…” Source: RevenueBase Database · checked Sep 28, 2026
23	Fact Gmbh Efacilities Solutions	Indirect evidence	Boblingen, GermanyHQ checked Sep 28, 2026	51-200	61 contacts →
	Indirect evidence “FACT.” Source: RevenueBase Database · checked Sep 28, 2026
24	SSP AG	Indirect evidence	Bochum, GermanyHQ checked Sep 28, 2026	201-500	59 contacts →
	Indirect evidence “Wandelbarkeit, Energieeffizienz und attraktive Mehrwerträume für Gebäude" Die SSP AG ist eines der national führenden integralen Planungsbüros mit derzeit rund 270…” Source: RevenueBase Database · checked Sep 28, 2026
25	Alpha IC Gmbh	Indirect evidence	Bamberg, GermanyHQ checked Sep 28, 2026	51-200	58 contacts →
	Indirect evidence “Die Alpha IC ist ein inhabergeführtes Consultingbüro für das Real Estate Management.” Source: RevenueBase Database · checked Sep 28, 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 building consultancies. 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 building consultancies.
Partial evidence: Its own public description names part of green building consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name green building consultancies. 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 1,691 green building consultancies based in Germany

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Green building consultancies based in Germany at a glance

As of Sep 28, 2026

39.8%Verified-email coverage

9.2Average contacts per company

1-10Median size (employees)

8.2%Largest-city concentration · Berlin

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,070

11-50

431

51-200

102

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,691 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 building consultancies, 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 building consultancies”. 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 building consultancies), 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 building consultancies, 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, 6,172 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 28, 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.

Green building consultancies by metro

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 building consultancies, 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 building consultancies are there based in Germany?

RevenueBase identified 1,691 green building consultancies 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?

Drees & Sommer, headquartered in Stuttgart, tops this list with the largest team on record.

Which city has the most green building consultancies?

Berlin leads with 138 headquartered companies, followed by Hamburg (71) and Stuttgart (51).

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 6,172 verified decision-maker contacts tracked across these 1,691 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 28, 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.