The Terre Bonne business park is being developed by Nemaco Suisse SA close to Lake Geneva, between Geneva and Lausanne. The business park contains ten buildings with an area of around 48,000m², including offices, a restaurant, a crèche and car parks. MVSA International BV has been awarded the commission to design the Z1 entrance building and a second building; Z2. The two Z1 and Z2 buildings are quite identical and situated between a row of three H-shaped buildings.
The Z1 entrance building has a transparent glass facade with a dark aluminium balustrade that, with its subtle play of lines, is transformed into large overhanging roof areas on the ends of the building. In this way, storey-high glass facades are created to provide maximum views. The ground floor has a greater storey height and a deeper exterior wall line. The entrance is situated in the middle of the building on the axis of the entrances of the other buildings. At ground level, special attention has been paid to the materials used and the inclusion of a variety of functions: a water table feature has been created on the entrance side, while two ramps on the long side of the building, between the lines of the exterior walls, the parapet and the main structure, provide access to the car park. The south side has a patio, and the terrace to the south has a natural stone balustrade that allows daylight into the basement restaurant area. On the north side the balustrade is extended in safety glass and planted areas.
Office areas are located on the north west side of the ground floor and the entire first and second floor. These office areas have a flexible layout thanks to the central entrance core. The restaurant, which serves the entire business park, is situated in the basement and on the ground floor with a spacious terrace on the south west side. The storey-high glass facade between the restaurant and the terrace can be fully slid open. The basement area of the restaurant can be reached via an open area in the restaurant or via a patio outside the building. The car park has spaces for 52 parking places and has direct access via a stairway or lift to the main entrance and the office storeys.
The building complies with strict Swiss (Minergie) sustainability standards: triple glazing is used, solar boilers are fitted on the roof, the roof is used for water storage, the balustrades reduce the percentage of glass and the large overhanging roof areas provide natural shading from the sun.