Extra storey and renovation in timber element construction – telephone exchange turned into offices and housing

The telephone exchange in Wollishofen was built by PTT in 1938. We had the honour of adapting the telephone exchange for modern use in collaboration with Rossetti + Wyss Architekten. Today, the building is used as office and residential space following the relevant conversion and renovation as well as the addition of another storey. Two spacious loft apartments were created above Swisscom’s business premises. The attic storey was constructed from prefabricated wood elements. The frame construction is lined internally and externally with panels. The external tone of the additional storey is the same as the original building. The facade is rear-ventilated and the additional storey is weatherproofed with Eternit panels. In terms of materials, the interior is dominated by birch plywood panels.

Portrait Peter Holenstein Sales Conversion Renovation Staircases Blumer Lehmann

Peter Holenstein

Sales Conversion | Renovation | Staircases | Timber Construction | Switzerland

+41 71 388 58 46
peter.holenstein@blumer-lehmann.com
Two new loft apartments were created on the top floor.

Attic conversion