Company lists · Data refreshed September 2026

Top 25 Green building consultancies based in Switzerland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 564 companies tracked

RevenueBase identified 564 green building consultancies headquartered in Switzerland as of September 2026 and tracks 5,124 professional contacts across them, including 2,441 with verified work emails. Zurich is the largest hub.

This list covers green building consultancies headquartered in Switzerland, 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

564Companies

5,124Contacts tracked

2,441Verified emails

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The 25 largest green building consultancies based in Switzerland

Ranked by team size

Top 25 of 564 green building consultancies based in Switzerland, 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	Amstein Walthert	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 28, 2026	1,001-5,000	563 contacts →
	Indirect evidence “Ü Ingenieurskunst bedeutet, mit Ressourcen richtig umzugehen.” Source: RevenueBase Database · checked Sep 28, 2026
2	Gruner	Indirect evidence	Basel, SwitzerlandHQ checked Sep 28, 2026	1,001-5,000	462 contacts →
	Indirect evidence “Gruner at a glance Founded: 1862 in Basel, Switzerland Legal form: Since 1970, public limited company owned by the founding families and employees Employees: more than 1,200 from…” Source: RevenueBase Database · checked Sep 28, 2026
3	Holinger	Indirect evidence	Liestal, SwitzerlandHQ checked Sep 28, 2026	501-1,000	265 contacts →
	Indirect evidence “For over 90 years, HOLINGER has been solving engineering and scientific tasks in various specialist areas related to the water cycle.” Source: RevenueBase Database · checked Sep 28, 2026
4	Drees & Sommer Switzerland	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 28, 2026	201-500	164 contacts →
	Indirect evidence “Drees & Sommer Switzerland is a consulting company providing a single source of consultation and implementation services for the real estate, infrastructure and industrial markets.” Source: RevenueBase Database · checked Sep 28, 2026
5	GLB Genossenschaft	Indirect evidence	Langnau, SwitzerlandHQ checked Sep 28, 2026	501-1,000	142 contacts →
	Indirect evidence “GLB ist die verlässliche Partnerin für Lebensräume – Die Expertin für energieeffiziente Sanierung, Neubau, Einfamilien- oder Mehrfamilienhaus, Gewerbe- oder Industriebau…” Source: RevenueBase Database · checked Sep 28, 2026
6	Weinmann-Energies SA	Indirect evidence	Echallens, SwitzerlandHQ checked Sep 28, 2026	51-200	47 contacts →
	Indirect evidence “Weinmann-Energies est un bureau d’ingénieurs-conseils EPFL-SIA-SuisseIng.” Source: RevenueBase Database · checked Sep 28, 2026
7	AFC AIR Flow Consulting AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 28, 2026	51-200	46 contacts →
	Indirect evidence “AFC AG gestaltet die Zukunft des energieeffizienten, nachhaltigen und sicheren Bauens.” Source: RevenueBase Database · checked Sep 28, 2026
8	Anex Ingenieure AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 28, 2026	51-200	40 contacts →
	Indirect evidence “Anex Ingenieure ist ein Beratungs- und Planungsunternehmen für Gebäudetechnik, das ressourcenschonende Energie- und Medienkonzepte für Prozesse, Gebäude und Areale entwickelt.” Source: RevenueBase Database · checked Sep 28, 2026
9	Ecosens AG	Indirect evidence	Wallisellen, SwitzerlandHQ checked Sep 28, 2026	51-200	40 contacts →
	Indirect evidence “Langjährige Erfahrung und Nähe zu aktuellen Entwicklungen in sämtlichen umweltrelevanten Fragestellungen machen Ecosens zum führenden Beratungsunternehmen.” Source: RevenueBase Database · checked Sep 28, 2026
10	Lemon Consult AG	Partial evidence	Zürich, SwitzerlandHQ checked Sep 28, 2026	11-50	37 contacts →
	Partial evidence “Lemon Consult is a specialized engineering and consulting office for energy efficiency, sustainability and renewable energies in the area of building and technical systems.” Source: RevenueBase Database · checked Sep 28, 2026
11	Sustainserv	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 28, 2026	11-50	34 contacts →
	Indirect evidence “Everything we do is designed to inspire meaningful change in the world every day.” Source: RevenueBase Database · checked Sep 28, 2026
12	Caeli Ingénierie	Indirect evidence	Carouge, SwitzerlandHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “Bureau d'études CVCSE, Energie, Automatisme du bâtiment, MCR, Physique du bâtiment.” Source: RevenueBase Database · checked Sep 28, 2026
13	Kalt Halbeisen Ingenieurbüro AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 28, 2026	51-200	32 contacts →
	Indirect evidence “Wir sind ein erfolgreiches Ingenieur, Planungs- und Beratungsunternehmen im Bereich der Energie- und Gebäudetechnik.” Source: RevenueBase Database · checked Sep 28, 2026
14	Waldhauser Hermann AG	Indirect evidence	Münchenstein, SwitzerlandHQ checked Sep 28, 2026	51-200	30 contacts →
	Indirect evidence “Haustechnik ist eine komplexe Angelegenheit und steht in direktem Zusammenhang mit Benutzerzufriedenheit, Betriebssicherheit, Erstellungs- und Betriebskosten sowie Umweltbelastung.” Source: RevenueBase Database · checked Sep 28, 2026
15	Energa SA	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “Situé à Yverdon-les-Bains et à Lausanne, ENERGA SA est un bureau d’ingénieurs-conseils EPFL-SIA actif sur l’ensemble de la Suisse romande.” Source: RevenueBase Database · checked Sep 28, 2026
16	AZ Ingénieurs SA	Indirect evidence	Lausanne 10, SwitzerlandHQ checked Sep 28, 2026	11-50	27 contacts →
	Indirect evidence “La marque az ingénieurs regroupe des sociétés privées réunissant des ingénieurs-conseils dans les domaines de l'énergie, de la sécurité et des installations techniques pour le…” Source: RevenueBase Database · checked Sep 28, 2026
17	Büro FÜR Bauökonomie AG	Indirect evidence	Kriens, SwitzerlandHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “Die Büro für Bauökonomie AG ist eine Tochter der Emch+Berger ImmoConsult AG und ein Unternehmen der 1953 gegründeten Emch+Berger Gruppe.” Source: RevenueBase Database · checked Sep 28, 2026
18	Tecnoservice Engineering SA	Indirect evidence	Fribourg, SwitzerlandHQ checked Sep 28, 2026	51-200	26 contacts →
	Indirect evidence “TECNOSERVICE ENGINEERING SA est un bureau d’études et d’ingénieurs conseils pour les installations techniques et études énergétiques liées au bâtiment et à l’industrie.” Source: RevenueBase Database · checked Sep 28, 2026
19	Enastra AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 28, 2026	11-50	25 contacts →
	Indirect evidence “Das Vernetzen der Fachgebiete Strategie & Konzept, Bauherrentreuhand, Energiecontrolling und Nebenkosten ist das Fundament unserer Kernkompetenz.” Source: RevenueBase Database · checked Sep 28, 2026
20	Weisskopf Partner Gmbh	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 28, 2026	11-50	25 contacts →
	Indirect evidence “Die Steigerung von Energieeffizienz und den Einsatz von erneuerbaren Energien verfolgen wir mit Herzblut.” Source: RevenueBase Database · checked Sep 28, 2026
21	Ifec Ingegneria SA	Partial evidence	Rivera-monteceneri, SwitzerlandHQ checked Sep 28, 2026	51-200	25 contacts →
	Partial evidence “IFEC ingegneria SA is a consulting company in the field of energy, building physics, acoustics and applied environmental sciences.” Source: RevenueBase Database · checked Sep 28, 2026
22	Leimgruber Fischer Schaub AG	Indirect evidence	Ennetbaden, SwitzerlandHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “Neutrale Beratung LFS berät Architekten und Bauherren als neutraler Partner.” Source: RevenueBase Database · checked Sep 28, 2026
23	Gimelli Engineering AG	Indirect evidence	Zollikofen, SwitzerlandHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “We’re a purpose-driving and future-oriented engineering company based in the greater Berne area.” Source: RevenueBase Database · checked Sep 28, 2026
24	Thalmann Steger Architekten AG	Indirect evidence	Wettingen, SwitzerlandHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “Wir bauen so, dass Sie sich in Ihrem Leben und Arbeitsalltag zuhause fühlen.” Source: RevenueBase Database · checked Sep 28, 2026
25	Prona AG	Partial evidence	Biel/bienne, SwitzerlandHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “As a full-service provider in the engineering sector, we have been creating added value in all aspects of environmental protection, occupational safety and building physics for…” 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 564 green building consultancies based in Switzerland

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Green building consultancies based in Switzerland at a glance

As of Sep 28, 2026

47.6%Verified-email coverage

9.1Average contacts per company

1-10Median size (employees)

8.2%Largest-city concentration · Zurich

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

396

11-50

132

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 564 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 Switzerland 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 Switzerland 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, 2,441 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

Green building consultancies in Zurich46

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 Switzerland?

RevenueBase identified 564 green building consultancies headquartered in Switzerland 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?

Amstein Walthert, headquartered in Zurich, tops this list with the largest team on record.

Which city has the most green building consultancies?

Zurich leads with 46 headquartered companies, followed by Lausanne (23) and Bern (20).

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 2,441 verified decision-maker contacts tracked across these 564 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.