Conversion, extension and upward extension of commercial properties

External view of the Givaudan office building. The additional floors stand out from the original building thanks to their dark brick facade.

Old and new perfectly combined

Extensions, conversions and additional storeys can seldom be planned completely in advance. That’s why specialist knowledge and extensive experience are essential. Our experts think flexibly. This allows them to fulfil your requirements, while at the same time achieving a perfect interplay of old and new, both in terms of aesthetics and energy efficiency. Our experienced experts will plan and deliver your project while taking into account:

  • Form and style
  • Heritage protection requirements
  • Fire regulations
  • Statics
  • Energy efficiency requirements
  • Sound insulation

Our complete renovation package

  • Complete recording of the building
  • Feasibility studies
  • Handling funding proposals
  • Coordinating energy certifications
  • Component calculations
  • Proposals for renovation
  • Implementation planning
  • Building applications for renovations
  • Construction support as GC or joint GC 
  • Production and assembly of timber constructions

Reconstruction project: Givaudan offices renovated with timber construction

External view of the newly converted Givaudan office building with brightly lit windows

The renovated factory hall was designed with an understated and bright interior.

Parquet-clad stairs up to the upper floor are in contrast with the modest use of materials.

The lounge encourages people to linger.

View of the gallery inside the modern office spaces

View of the office spaces with their light and modern interiors

View of the bright hallway with stairs

  • External view of the newly converted Givaudan office building with brightly lit windows

    External view of the newly converted Givaudan office building with brightly lit windows

  • View of the empty hall with the new office space for Givaudan, which was previously the Maggi soup factory

    The renovated factory hall was designed with an understated and bright interior.

  • Parquet-clad stairs lead to the upper floor and are visually impressive in how they contrast with the white walls and ceiling.

    Parquet-clad stairs up to the upper floor are in contrast with the modest use of materials.

  • The lounge with seating areas in discreet grey and a glass front facilitates informal conversations

    The lounge encourages people to linger.

  • Internal view of the converted factory building: workplaces in the modern open-plan office.

    View of the gallery inside the modern office spaces

  • View of the office spaces with their light and modern interiors

    View of the office spaces with their light and modern interiors

  • View of the bright hallway with stairs

    View of the bright hallway with stairs

  • External view of the newly converted Givaudan office building with brightly lit windows
  • View of the empty hall with the new office space for Givaudan, which was previously the Maggi soup factory
  • Parquet-clad stairs lead to the upper floor and are visually impressive in how they contrast with the white walls and ceiling.
  • The lounge with seating areas in discreet grey and a glass front facilitates informal conversations
  • Internal view of the converted factory building: workplaces in the modern open-plan office.
  • View of the office spaces with their light and modern interiors
  • View of the bright hallway with stairs

Are you planning an extension or upward extension?

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Markus Rutz

Advice from an expert in upward extensions?

Markus Rutz looks forward to hearing from you.

T +41 71 388 58 40
markus.rutz@blumer-lehmann.ch

Reconstruction project: Kornhaus converted in timber construction

The historic Kornhaus in the sunset

Entrance of the Kornhaus with historical facade

Facade with windows

Inner courtyard with a view of the façade

Interior of the Kornhaus

Interior of the Kornhaus with balcony

Interior of the Kornhaus with kitchen and stairs

Open-plan kitchen with gallery

Room in the Kornhaus with windows

  • The historic Kornhaus in the sunset

    The historic Kornhaus in the sunset

  • Entrance of the Kornhaus with historical facade

    Entrance of the Kornhaus with historical facade

  • Facade with windows

    Facade with windows

  • Inner courtyard of the Kornhaus with a view of the façade

    Inner courtyard with a view of the façade

  • Interior of the Kornhaus

    Interior of the Kornhaus

  • Interior of the Kornhaus with balcony

    Interior of the Kornhaus with balcony

  • Interior of the Kornhaus with kitchen and stairs

    Interior of the Kornhaus with kitchen and stairs

  • Open-plan kitchen with gallery

    Open-plan kitchen with gallery

  • Room in the Kornhaus with windows

    Room in the Kornhaus with windows

  • The historic Kornhaus in the sunset
  • Entrance of the Kornhaus with historical facade
  • Facade with windows
  • Inner courtyard of the Kornhaus with a view of the façade
  • Interior of the Kornhaus
  • Interior of the Kornhaus with balcony
  • Interior of the Kornhaus with kitchen and stairs
  • Open-plan kitchen with gallery
  • Room in the Kornhaus with windows

Find out more about our conversion projects

Overall view of the converted Fust logistics centre with new additional storey in wood element construction
Extra storey in timber for Fust logistics centre
Find out more
View of the granary conversion from the harbour in Romanshorn.
Kornhaus converted in timber construction
Find out more
External view of the newly converted Givaudan office building with brightly lit windows
Givaudan offices renovated with timber construction
Find out more
Looking into the inner courtyard with extension and tree
Extra storey in timber structure for REHAB Clinic Basel
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Timber construction services

General contractor services Discover
Discussion in the planning team of the timber construction general contractor department of Blumer Lehmann
Production Discover
The milling head processes the piece of wood on the CNC machine. The shavings fly off.