Square One

Square One, 1190 Vienna:The office space with an extra Plus

Shaping urban work in Vienna

Photo: Square One building façade with windows on the roof.
©Daniela Hawelka

Highlights:Bold. Creative. Atypical.

Courage, creativity, modern design and individuality all come together in one project: Square Plus. The new real estate complex offers flexibility with regards to layout and use on all levels and is divided into two buildings: Square One and Square Two. The first and larger property is home to an international office district, the second contains modern micro-apartments for students, trainees and long-term travellers.

01Flexible, designable and open workspaces
02Open lounge as a meeting point for communication and networking
03 Open meeting space as an ideal place for communication and break out
04Networking at the roof top terrace with a great view at the Kahlenberg hill
©Daniel Hawelka
©Daniel Hawelka
©Daniel Hawelka
©Daniela Hawelka

Location:Perfectly connected

At one of the most exclusive locations in Vienna, a new attitude towards life has emerged in the 19th district. The business district of Döbling at the foot of the Kahlenberg is located directly at the transport hub of Heiligenstadt. It, therefore, has great links to the train and underground network, which means you can get to the center of Vienna, the nearby areas of Klosterneuburg and Krems, as well as Vienna Airport in next to no time.

©Daniela Hawelka
01Excellent links to the public transport network


Leopold-Ungar-Platz 2, 1190 Vienna

Leopold-Ungar-Platz 2, 1190 Vienna

Google Maps
30 min by car
5 min by car
in the building
City train
200 metres
Local supply
in the building
Railway station
200 metres
200 metres
200 metres

Facts and figures

  • 27,200Gross floor space sqm
  • 1,600space sqm
  • 354car parking spaces
  • 1,900Storage space sqm


  • Logo: DGNB PlatinDGNB Platin certified


  • Planning
  • Project development
  • Project management
  • Marketing

About Square One

The modern and multi-functional office complex is a pioneer among sustainable office properties. This creates added value for people and nature, which has been recognised with a platinum certification from the Austrian Society for Sustainable Real Estate Management. The building was designed by the renowned HNP architects. The result: More space, flexible and adjustable office spaces and practical considerations taking into account the needs of future users. This kind of considered approach has resulted in the area becoming a modern hub for media, communications and life sciences.

Construction time
2015 - 2017
Areal concept
  • 27,200 m² over 6 floors

  • room height of 2.80 metres

  • rental spaces of 216–5060 m²

Used by
Zurich Versicherung, Raiffeisen Holding, klima+energie fonds, amvs, CWI, Klima SEC Consulting, Spaces, Medani, Agilent, OrphaCare, 7reasons Medien GmbH, conet, MERKUR Gaming, CP GABA, AOP Orphan, venuss, Billa, etc.
Mobility concept
354 underground parking spaces and bicycle parking areas with showers
Special features
  • In-house fitness area

  • Canteen with terrace in the garden

  • Supermarket, bank, travel agency and catering in the building

  • Energy-efficient construction

  • Photovoltaics on the roof

  • ÖGNI/DGNB platinum certification

  • Exterior sun protection

  • Opening windows

  • Metal ceiling cooling system

  • Mechanical ventilation

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