Company lists · Data refreshed November 2026

Top 25 Green building system contractors based in Austria

RevenueBase identified 85 company matches for green building system contractors associated with Austria as of November 2026 and tracks 621 professional contacts across them, including 278 with verified work emails. Vienna is the largest hub.

This list covers company matches for green building system contractors associated with Austria, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
85Companies
621Contacts tracked
278Verified emails
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The 25 largest green building system contractors based in Austria

Ranked by team size
Top 25 of 85 company matches for green building system contractors based in Austria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLeonding, AustriaHQ recorded Nov 6, 2026201-500100 contacts →

Exact match

“G.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchRum, AustriaHQ recorded Nov 6, 2026201-50070 contacts →

Exact match

“Techem ist einer der führenden Servicepartner der Immobilienwirtschaft.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLinz, AustriaHQ recorded Nov 6, 2026501-1,00053 contacts →

Exact match

“Als führendes oberösterreichisches Unternehmen der Gebäude- und Anlagentechnik sind wir mit unserem umfassenden Angebot Ihr richtiger Partner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchVienna, AustriaHQ recorded Nov 6, 202651-20027 contacts →

Exact match

“Dank innovativer Technik bieten unsere Gebäudemanagementlösungen den Nutzern Komfort, Funktionalität und Betriebssicherheit bei kosteneffizientem Unterhalt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchVienna, AustriaHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“beyond carbon energy konzipiert, plant, realisiert, finanziert und betreibt weitestgehend emissionsfreie Wärme- und Kälteversorgung für Bestands- und Neubauimmobilien.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchVienna, AustriaHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“Lukas Lang Building Technologies ist Vorreiter in der Entwicklung von umweltfreundlichen Bautechnologien und nachhaltigen Bauprojekten.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchVienna, AustriaHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“SEM Energie- und Gebäudemanagement GmbH Wir sind ein stark expandierendes Unternehmen im Bereich der Energiedienstleistungen und dem Gebäudemanagement.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchVienna, AustriaHQ recorded Nov 6, 20261-1015 contacts →

Exact match

“ÖGNI certifies buildings with high ecological, economic and socio-cultural added value for our environment, building owners and users.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchVienna, AustriaHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“UNSERE DIENSTLEISTUNGEN - Planung, Errichtung und Sanierung von Elektroanlagen Elektroinstallation in Wohnungen, Einfamilienhäuser, Wohnhäuser, Büros, Gewerbebetriebe, uvm-…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSt. Pölten, AustriaHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Willkommen bei den KWI-Ingenieuren!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWels, AustriaHQ recorded Nov 6, 20261-1012 contacts →

Exact match

“PWE System GmbH is a company based out of Franz-zola-straße 5, Wels, Oberösterreich, Austria.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchVienna, AustriaHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Unser Ansatz basiert auf einer ökologisch und ökonomisch effizienten TGA Planung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchGmunden, AustriaHQ recorded Nov 6, 202651-20012 contacts →

Exact match

“Wir beraten, planen, installieren / montieren, reparieren, servicieren u.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSpittal An Der Drau, AustriaHQ recorded Nov 6, 2026201-50012 contacts →

Exact match

“Conversio Energie GmbH is a chemicals company based out of Koschatstraße 24, Spittal an der Drau, Austria.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchFeldbach, AustriaHQ recorded Nov 6, 202651-20010 contacts →

Exact match

“Die KGT Gebäudetechnik GmbH ist eines der führenden österreichischen Unternehmen in den Bereichen Heizung, Lüftung, Sanitär, Klima, Elektro, Sprinkleranlagen und…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLinz, AustriaHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“E-Lite Techn.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchVöcklabruck, AustriaHQ recorded Nov 6, 202611-509 contacts →

Exact match

“SYNERGIE DES GANZEN Alle Gewerke der technischen Gebäudeausrüstung Wir als Ingenieurbüro bieten Gebäudetechnische Gesamtlösungen aus den Bereichen Heizungstechnik…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLandeck, AustriaHQ recorded Nov 6, 202651-2008 contacts →

Exact match

“Innovativ und nachhaltig: Wir vereinen intelligente Energiesysteme unter Ihrem Dach.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchGraz, AustriaHQ recorded Nov 6, 202651-2008 contacts →

Exact match

“Als Komplettanbieter liefern wir unseren Kunden die gesamte Gebäudetechnik aus einer Hand – also Elektro, Sicherheit, Steuerungen, Sanitär, Heizung und Lüftung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBrixlegg, AustriaHQ recorded Nov 6, 202611-506 contacts →

Exact match

“IHR SMARTER PARTNER IN DEN BEREICHEN Gebäudetechnik – Fördermanagement – Energieberatung Unser Fokus liegt auf wirtschaftliche Anlagenplanung mit möglichst hohem Einsatz von…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSalzburg, AustriaHQ recorded Nov 6, 202611-506 contacts →

Exact match

“elkatec, ein modernes Planungsbüro zur Umsetzung von energieeffizienten Planungslösungen in Elektro- und Haustechnikbereichen der Wirtschafts-und Gewerbekunden sowie des…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchGrieskirchen, AustriaHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Pointinger Green Buildings sind die nachhaltige, wirtschaftliche und zukunftsfitte Lösung für den Wohn- und Gewerbebau.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchVienna, AustriaHQ recorded Nov 6, 202611-505 contacts →

Exact match

“HTB-Plan Haustechnik Planungs GmbH – Mehr als 20 Jahre Erfolg in der Gebäudetechnik Seit unserer Gründung im Jahr 2001 haben wir uns von einem Ein-Mann-Betrieb zu einem führenden…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchVienna, AustriaHQ recorded Nov 6, 202611-505 contacts →

Exact match

“wir installieren generationen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchGröbming, AustriaHQ recorded Nov 6, 202611-505 contacts →

Exact match

“Ihr Installateur-Profi für Heizung, Sanitär, Alternativenergie, Lüftungsanlagen, Elektroinstallationen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 85 green building system contractors based in Austria

See the full list, filter by size, metro and specialty, and access 278 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Green building system contractors based in Austria at a glance

As of Nov 6, 2026
44.8%Verified-email coverage
7.3Average contacts per company
11-50Median size (employees)
18.8%Largest-city concentration · Vienna
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
36
11-50
27
51-200
10
201-500
3
501-1,000
2
1,001-5,000
1

Email recency for this list is measured worldwide rather than for Austria, so it is reported there. Company counts and contact totals on this page are exact for Austria, over 85 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Austria whose business descriptions match “green building system contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 278 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “green building system contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many green building system contractors are there based in Austria?

RevenueBase identified 85 company matches for green building system contractors associated with Austria as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

G. Klampfer Building Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most green building system contractors?

Vienna leads with 16 company records, followed by Graz (5) and Linz (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 278 professional contacts with verified work emails tracked across these 85 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.