The main entrance leads to the inner courtyard, which connects all levels and is characterised by a natural outdoor climate and its hanging gardens. Perforated façade elements filter the incoming sunlight. Combined with the constant air circulation, this creates an ideal microclimate in the building and in the circulation areas, which provides an architectural counterpart to the favourable climatic conditions in Nairobi. Open lounge areas and meeting places are connected to this inner courtyard on all three levels. Furthermore, the atrium creates short access routes between the different areas and thus a spatially versatile and varied centre of the building.

The storeys are designed as self-supporting, rigid levels made of a reinforced concrete structure. A regular supporting structure consisting of columns and load-bearing façade elements offers great flexibility for the position of the partition walls and thus the possibility of changing room layouts at a later date. Due to the rigidity of the supporting structure of the individual storeys, it is possible to move the levels. The materiality, appropriate to the local climate, refers to the tradition of exposed concrete in Nairobi as well as in Switzerland, and symbolically connects the two countries.

Nairobi's ideal climate and the specific construction method allow for a building that does not require air conditioning. The flowing transitions between indoor and outdoor spaces and the targeted use of plants create a natural, healthy and sustainable microclimate. External blinds are integrated into all window elements and can be used to shade the rooms, while the green terraces can be used as recreational areas and contribute to a pleasant climate. The roof area of the 2nd floor will be fitted with a photovoltaic system that will generate approx. 50,000 kWh per year and thus cover the law firm's expected electricity requirements. The mass and thermal inertia of the reinforced concrete construction is ideal for generating a balanced building temperature throughout the day. In addition, the storey ceilings are used for cooling (or heating if required) the interior spaces by means of component activation. Rainwater is collected on the terraces and roof areas and channelled into a grey water storage tank in the basement to be used for flushing toilets, watering plants and cleaning the building. Drinking water is provided locally via a well. This concept of sustainability is based on the existing qualities of the site, resulting in a building with the least possible impact on the existing landscape.