The extension to the administration building on Avenue Edmond-Vaucher in Geneva is a ten-storey building that is directly docked onto the existing. The spectacular placement at the rim of the large Parc des Franchises is retained through the direct annexation of the new, narrow volume.
The architects have interwoven the old and new elements into a consistent unity by strengthening the qualities of the existing structure, while complementing and developing them further. The new volume’s alignment, scale and materials are inspired by the existing building from the 1970s. The extended building is now almost twice as large as before and accommodates around 1,000 workplaces under one roof.
The new façade consists of prefabricated concrete elements. It picks up on the expression of the existing building. The architects have connected and closed the previously open and now extended ground floor with a continuous base façade, in which the public facilities including a restaurant and conference rooms are accommodated.