Location
Zurich, Switzerland
Year
2025
Type
Commercial
Size
6,200 m²
Status
Completed 2025
Client
Halden Real Estate
Project
Office 21 is a six-storey frame of exposed concrete. Waffle slabs carry installations in their voids, so there is nothing to hide above the desks and nothing to replace in thirty years.
Vertical precast fins along the facade shade the glass and give the street elevation its rhythm. Each fin was cast in the same timber mould, which is why every board mark lines up.

Fig. 1
Fourth floor, looking along the east facade
Typical floor plan
Scale
1:200

Fig. 3
Board-marked concrete, rough sawn spruce formwork
Materials
Board-marked concrete
Precast fins
Oak
Brass
Credits
Architecture
Monolith Office
Structure
Brenner & Lutz Ingenieure
Facade
Fassadenwerk AG
Client
Halden Real Estate

