References

Storey with timber construction for townhouse

St. Gallen, CH

Overall view of the extended detached house with a garden

Sustainable additional storey

The conversion of this detached house demonstrates how it is possible to extend a property in the city and in a confined space. In line with urban densification and taking the local cityscape into consideration, the detached house in the city of St. Gallen gained an additional storey with timber element construction. As general contractor, we designed and implemented the conversion in 1.5 years. 


Following the conversion, the client has a total gross floor area of 313 m2 and significantly more space at its disposal. The additional storey contains two rooms, a dressing room and a bathroom. Our project team designed and built the extension on top of the existing solid construction. With a facade made of pre-aged Nordic spruce with acoustic panelling, the building complies with the requirements for the preservation of the cityscape stipulated by the city of St. Gallen. The energy supply is provided via a geothermal pump.

Portrait Migga Hug Head of GC Services Blumer Lehmann

Migga Hug

Head of GC & TC Services | Architectural planning | Switzerland
Member of the Division Management

+41 71 388 58 23
migga.hug@blumer-lehmann.com
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Project details

Client:
Private
Architecture:
Blumer-Lehmann AG
Project type:
Residential construction single-familiy home
Construction type:
Wood element construction
Services:
General contractor services (GC)
Construction:
2019-2020
Locality:
St. Gallen
Country:
Switzerland
Bright study in the top floor extension with a sloped ceiling and wooden floor

Large windows allow plenty of daylight into the study in the added top floor of the detached house.

Seating area featuring a grey sofa in the bright living area with parquet flooring in the added storey of the detached house

Comfortable and bright; large windows, an abundance of wood and the sloped ceiling create a pleasant atmosphere.

Overall view of the bathroom with blue walls, wooden floor and large windows

The blue walls add charming accents in the spacious bathroom and harmonise with the wooden floor.

Corridor with wooden flooring and a roof window in the sloped top floor

The interior design in the newly added top floor of the detached house has a simple and fresh look.

Badezimmer mit blauen Wänden, grosser Fensterfront und Doppellavabo

The striking blue walls, suspended double washbasin and wooden flooring add a playful touch to the bathroom.

Bright bedroom with double bed and parquet flooring in the added storey of the detached house

The high, sloped ceiling creates a spacious and elegant bedroom.