Skip to content

Hot Flat 

A city apartment building for five to ten families

Sketch by Wolf dPrix

Project info

One of the main concerns of the design was to make each apartment as large as possible for as little money as possible. Factory halls throughout the world that have been turned into living spaces provided a model for this.

Another fundamental concern was shaping and directing attention to the connections and transitions between the private sphere (the apartments) and the public sphere (the city). The shared spaces and the roofed-over courtyard are clearly sculpted and identifiable. Supply connections to the city are clearly visible.

Inside the building, however, the apartments comprise only the four walls. They have a floor space of 164 square meters and a height of five meters, their arrangement remaining free. They are unfinished spaces that can be designed by the owners and expanded to include a second floor, creating a living space of 282 square meters.

The only permanent fixtures in the flats are multimedia connections: telephone, TV, video and stereo equipment. The building is made of steel, with concrete and other prefabricated parts.

A balcony runs throughout the building as a common space. The flame-shaped glass roof represents the opening fire”. It extends as a cover over the courtyard and cuts through the apartments on the upper floors. The hoist used for construction will remain as a freight hoist, which means that the balconies can be used as either gardens or parking spaces — even on the fifteenth floor.

Project insights

Vienna, Austria

Gerald Zugmann


Gerald Zugmann

Collage of Hot Flat


Coop Himmelb(l)au

Related projects