Company lists · Data refreshed September 2026
Top 25 Real estate portfolio optimization services based in Austria
RevenueBase identified 150 real estate portfolio optimization services headquartered in Austria as of September 2026 and tracks 1,106 professional contacts across them, including 525 with verified work emails. Wien is the largest hub.
This list covers real estate portfolio optimization services 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 21, 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.
The 25 largest real estate portfolio optimization services based in Austria
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 159 contacts → | ||||
Strong evidence “We are iO Partners, real estate experts across Central and Eastern Europe.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 105 contacts → | ||||
Indirect evidence “Tradition und Innovation.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 83 contacts → | ||||
Indirect evidence “Wir bieten Ihnen das komplette Dienstleistungs-Programm der Immobilienbranche: Immobilienmakler für Wohnen und Gewerbe Investment Bewertung Immobilienmanagement Research Wir sind…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 82 contacts → | ||||
Strong evidence “The DELTA Group is a leading international architecture, engineering and consulting company providing a holistic service portfolio in the real estate sector.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 39 contacts → | ||||
Strong evidence “DataScience Service GmbH – your reliable partner for large real estate portfolios!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 36 contacts → | ||||
Indirect evidence “Immobilien” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 30 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 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 22 contacts → | ||||
Indirect evidence “IHR PROJEKT IST UNSER PROJEKT Wir bieten ganzheitliches Immobilien- und Bauprojektmanagement aus einer Hand!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 16 contacts → | ||||
Partial evidence “Als österreichische Marktführerin steht metamagix Software & Consulting für innovative Lösungen im Immobilien Asset- und Portfolio-Management.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 15 contacts → | ||||
Indirect evidence “CBS International ist ein Mitglied der Cushman & Wakefield Alliance, einem führenden globalen Immobiliendienstleister mit Mitarbeitern in mehr als 60 Ländern, der Mietern und…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 15 contacts → | ||||
Indirect evidence “PROPSTER is a cloud-based configuration platform with a wide range of features to optimize the handling of property developments.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 contacts → | ||||
Indirect evidence “Unsere Kerntätigkeiten sind die Verwaltung, Betreuung und Entwicklung von Immobilien für Anleger.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 contacts → | ||||
Indirect evidence “AURIS Immo Solutions GmbH ist eine unabhängige, inhabergeführte Immobilien-Managementgesellschaft mit Sitz in Wien.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 11 contacts → | ||||
Indirect evidence “STADTQUARTIER Immobilien berät und betreut kompetent, mit langjähriger Erfahrung und Expertise bei der Immobiliensuche, dem Kauf/Verkauf und der Vermietung von Grundstücken…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 11 contacts → | ||||
Indirect evidence “Seit Beginn der 1990er-Jahre sind wir europaweit tätig und können auf ein umfangreiches Know-how und große Erfahrung zurückgreifen.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 10 contacts → | ||||
Indirect evidence “Die WESIAK Group, mit Sitz in Graz, Wien und Klagenfurt, ist ein Allrounder in der Immobilienbranche.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 10 contacts → | ||||
Indirect evidence “NV Immobilien GmbH is a company based out of RÖGERGASSE 34, Wien, Wien, Austria.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 9 contacts → | ||||
Indirect evidence “CP Immo Solutions GmbH ist ein innovatives Unternehmen, das Software für Hausverwaltungen entwickelt und realisiert.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 9 contacts → | ||||
Indirect evidence “Hohendanner & Partner steht für langjährige Erfahrung, absolutes Vertrauen, Wertschätzung und Respekt im Miteinander.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 8 contacts → | ||||
Indirect evidence “EKAZENT ist Ihr Spezialist für die Assetklassen Wohnen, Hotel und Retail.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Indirect evidence “Erfahrung.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Indirect evidence “Die CAFM Systems GmbH ist ein IT Unternehmen, das seit 20 Jahren modernste Web-Lösungen im Bereich der Bau- und Immobilienwirtschaft entwickelt.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 7 contacts → | ||||
Indirect evidence “teamgnesda begleitet Sie auf der Reise ins neue Büro.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 6 contacts → | ||||
Indirect evidence “Unsere Leistungen umfassen ein breites Spektrum über den gesamten Lebenszyklus von Immobilien.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 6 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 21, 2026Thanks. The Data Team will review it. | |||||
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: real estate portfolio optimization services. 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 real estate portfolio optimization services.
- Partial evidence
- Its own public description names part of real estate portfolio optimization services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name real estate portfolio optimization services. 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 150 real estate portfolio optimization services based in Austria
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Real estate portfolio optimization services based in Austria at a glance
As of Sep 21, 2026Companies by employee count
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 150 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 portfolio optimization services, 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 portfolio optimization services”. 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 portfolio optimization services), 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 portfolio optimization services, 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, 525 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 21, 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.
Real estate portfolio optimization services by metro
- Real estate portfolio optimization services in Wien52
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 portfolio optimization services, 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 portfolio optimization services are there based in Austria?
RevenueBase identified 150 real estate portfolio optimization services 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?
IO Partners, headquartered in Vienna, tops this list with the largest team on record.
Which city has the most real estate portfolio optimization services?
Wien leads with 52 headquartered companies, followed by Vienna (16) and Graz (11).
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 525 verified decision-maker contacts tracked across these 150 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 21, 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.
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