Company lists · Data refreshed September 2026

Top 20 Real estate sustainability software companies based in Austria

RevenueBase identified 33 real estate sustainability software companies headquartered in Austria as of September 2026 and tracks 296 professional contacts across them, including 140 with verified work emails. Wien is the largest hub.

This list covers real estate sustainability software companies headquartered in Austria, 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 29, 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 29, 2026 86% judged on-target in blind review
33Companies
296Contacts tracked
140Verified emails
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The 20 largest real estate sustainability software companies based in Austria

Ranked by team size
Top 20 of 33 real estate sustainability software companies based in Austria, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to real estate sustainability software companies: 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 evidenceWien, AustriaHQ checked Sep 29, 2026501-1,00059 contacts →

Indirect evidence

“immOH!”

Source: RevenueBase Database · checked Sep 29, 2026
2Partial evidenceWien, AustriaHQ checked Sep 29, 202611-5040 contacts →

Partial evidence

“Glacier AI empowers companies to unlock their sustainability potential with our AI-powered sustainability coworker.”

Source: RevenueBase Database · checked Sep 29, 2026
3Strong evidenceVienna, AustriaHQ checked Sep 29, 202611-5030 contacts →

Strong evidence

“We are a team of experts in the real estate industry for technical due diligence of real estate transactions as well as sustainability and quality assessments in the development…”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceWien, AustriaHQ checked Sep 29, 202651-20027 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidenceWien, AustriaHQ checked Sep 29, 202611-5019 contacts →

Partial evidence

“Established in 2003, STC DEVELOPMENT stands for sustainable and economically successful project developments based on the current requirements and needs of the market.”

Source: RevenueBase Database · checked Sep 29, 2026
6Strong evidenceVienna, AustriaHQ checked Sep 29, 202611-5011 contacts →

Strong evidence

“blue auditor is an ESG SaaS startup providing technology solutions for transitioning real estate to ESG compliance and sustainability to ensure financial stability and economic…”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceKlagenfurt, AustriaHQ checked Sep 29, 202611-509 contacts →

Indirect evidence

“Seit Jahrzehnten beschäftigen wir uns mit Energie- und Umweltdaten in Unternehmen.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceVienna, AustriaHQ checked Sep 29, 202611-508 contacts →

Indirect evidence

“Erfahrung.”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceVienna, AustriaHQ checked Sep 29, 202611-508 contacts →

Indirect evidence

“Seit 1987 entwickelt KALLCO nachhaltige und wirtschaftlich durchdachte Immobilienprojekte, die neue Maßstäbe in der Stadt- und Quartiersentwicklung Wiens setzen.”

Source: RevenueBase Database · checked Sep 29, 2026
10Strong evidenceVienna, AustriaHQ checked Sep 29, 20261-106 contacts →

Strong evidence

“Developing long-term real estate projects in urban areas.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceWien, AustriaHQ checked Sep 29, 20261-106 contacts →

Indirect evidence

“Die Breiteneder Immobilien Parking AG widmet sich der Entwicklung und dem Betrieb von nachhaltigen Immobilienprojekten in Mittel- und Südosteuropa.”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceGraz, AustriaHQ checked Sep 29, 202611-506 contacts →

Indirect evidence

“Die zur K1 Group gehörigen Unternehmen decken ein breites Spektrum im Bereich Immobilien und Immobilienmanagement ab: Von der Errichtung über Sanierung bis hin zur Vermarktung und…”

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceHolzhausen, AustriaHQ checked Sep 29, 202611-505 contacts →

Partial evidence

“Wir freuen uns, Ihnen unser Unternehmen vorstellen zu dürfen: Die ETU GmbH steht für Softwareentwicklung, Vertrieb und Schulung von Softwareprodukten.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceSalzburg, AustriaHQ checked Sep 29, 202611-505 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceWien, AustriaHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“Finde die besten Immobilien mit höchster Rendite!”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceLochau, AustriaHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“Pioneering the Future - dafür stehen wir in den Bereichen Immobilien, Prop- und GreenTech”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceInnsbruck, AustriaHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“English version below - Über uns Wir unterstützen Dich dabei, Deinen Betrieb, Deine Veranstaltung oder Deine Region messbar nachhaltiger und wirksamer zu machen: mit ehrlichen…”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceVienna, AustriaHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“Wir sind ein unabhängiges Unternehmen für Immobilieninvestments und stehen für nachhaltige Geldanlagen.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceVienna, AustriaHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“indigo begleitet Unternehmen, Investor:innen, Gemeinden und Städte bei der sinnstiftenden Wieder, Weiter, und Mehrnutzung von Bestandsimmobilien.”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceLinz, AustriaHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026

Showing 20 of 33 real estate sustainability software companies based in Austria

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Real estate sustainability software companies based in Austria at a glance

As of Sep 29, 2026
47.3%Verified-email coverage
9.0Average contacts per company
11-50Median size (employees)
30.3%Largest-city concentration · Wien
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
16
11-50
15
51-200
1
501-1,000
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 33 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 real estate sustainability software companies, 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 Austria whose own description of what they do matches “real estate sustainability software companies”. 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 real estate sustainability software companies), 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 real estate sustainability software companies, and records with no verified work email. Companies headquartered outside Austria 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, 140 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 29, 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 real estate sustainability software companies, 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 real estate sustainability software companies are there based in Austria?

RevenueBase identified 33 real estate sustainability software companies headquartered in Austria 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?

Immoh Macht Ihre Immobilie ZU Einem Besseren ORT, headquartered in Wien, tops this list with the largest team on record.

Which city has the most real estate sustainability software companies?

Wien leads with 10 headquartered companies, followed by Vienna (6) and Graz (1).

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 140 verified decision-maker contacts tracked across these 33 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 29, 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.