A sustainable building is more than a traditional building with some additions. Achieving it requires a radically different way of thinking and the ability to break free from entrenched patterns and processes. It is also an integral part of every phase of the process and not something that can be added afterward. The earlier in the construction process, the more impact decisions have and the greater the potential. The State Real Estate Agency has already taken the first crucial step in this regard: revitalization instead of choosing new construction. The same principle applies to the design's execution, with the greatest savings coming from what you don't build, which is the basis of our design.

Bay windows

The most significant decision is to add bay windows at the points where the façade currently folds inward. With this effective intervention, the building undergoes a substantial transformation. Where the building used to turn inwards with its existing recessed niches, the bays now direct the building outward. This transforms the building from a closed structure into an open, inviting building that engages with its surroundings.

Building Less

By adding additional surface area in the form of bays, we achieve multiple goals at once: it provides the opportunity to fundamentally improve the building envelope's sustainability and significantly enhances the usability of the existing building, reducing the need for additional construction with a minimal footprint. By positioning this extension in the 'corner' of the building, a compact structure is created with more space for urban forest in line with the urban area vision. Additionally, all existing trees on the plot are preserved.

Reducing Demolition

Limiting new construction goes hand in hand with maximizing the preservation of the existing structure. Demolition work is kept to a minimum, and the positions of the existing (structural) stairwells, elevator core, and restrooms are retained. Demolition is only employed strategically where it offers significant spatial value. For instance, we create an atrium between the multifunctional seating area and the anchor point on the first floor. Also, on the ground floor, concrete façade elements are disassembled to increase the transparency of the façade and strengthen the connection with the surrounding landscape. Other demolition work is limited to the removal or disassembly of the current interior package.

Circular Extension

Both the bays and the extension are positioned directly above the load-bearing lines and within the structural principles of the existing building. This approach eliminates the need for a new foundation, typically one of the most environmentally polluting aspects of a building. The extension is designed to be circular, demountable, and remountable. To add character and create a clear distinction between the existing building and the extension, the floors, walls, and structure of the extension are all made of wood.

Height and Character

Inside, various measures are taken to optimize the use of natural daylight. The use of light colors and subtly reflective surfaces, such as aluminum interior frames, further directs light inside. We also remove the parapets and the existing lowered ceiling to bring in even more natural light. This increases the ceiling height and, subsequently, the quality of the office space. To enhance the character of the concrete walls and columns, they are sanded and left exposed. Color is used at the end of sightlines and to highlight important elements such as the entrance desk and the main staircase, allowing users to navigate naturally through the building.