Wien 3420 AG

Wien 3420 Aspern Development AG
Seestadtstraße 27/13
A 1220 Vienna

T: +43 1 774 02 74
F: +43 1 774 02 74 99


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The aspern Seestadt development is much more than a run-of-the-mill urban expansion project, but rather the creation of a "city within a city" with a diverse spectrum of urban functions, a brand new centre for Vienna's 22nd district, the surrounding area and the wider Centrope region. Given the long development horizon of over two decades, the property owners and the City of Vienna have agreed on a cooperative management process to ensure a universal high quality of planning, design and implementation throughout. Wien 3420 AG and the City of Vienna's project leader for Seestadt are the two key points of contact for all actors and stakeholders involved in the project:

Wien 3420 AG

Wien 3420 AG was set up for the purpose of developing aspern Seestadt into an urban centre with an international profile. Besides bringing new partners on board and handling the sale and letting of building plots, it is also responsible for location marketing and branding activities. Working in close cooperation with its partners, Wien 3420 AG pushes ahead the urban development project, supporting and monitoring the land use designation and zoning process and the building of the necessary infrastructure.

The owners of Wien 3420 AG:

  • GELUP GmbH – 73.4% (subsidiary of the Vienna Business Agency (, the VIENNA INSURANCE GROUP Wiener Städtische Versicherung AG ( and the building society Bausparkasse der österreichischen Sparkassen Aktiengesellschaft (
  • Bundesimmobiliengesellschaft BIG (federal property administration) ( – 26.6%

To the Website of Wien 3420 AG



Project leader on behalf of the City of Vienna

Over 20 departments of the Vienna City Administration are involved in the development of aspern Seestadt. Developing the area into a future-oriented urban neighbourhood with a high quality of life requires the smooth cooperation of a large number of different actors and stakeholders with a wide range of different roles. The City of Vienna's project leader for Seestadt manages and coordinates all project-related measures both within the Vienna City Administration and in collaboration with external partners, facilitating the cooperation between the City of Vienna, the project development company and other partners involved in implementing the project.

To the website of project leader for aspern Seestadt