The new administrative building defines a new gate on the western boundary of Mettmann. The concept is influenced by the topography with 4m level changes, the location between city and landscape and the odd geometry of the plot. With its smooth lines and the angled kidney-shape the 6-storey building follows this given situation. The design communicates democracy and transparency with its public exterior and interior spaces.
Including 2 future additions three buildings will be linked with the public plaza and the infinity edge water feature. Playing with the idea of stitching city and landscape the western edges of the buildings cantilever several meters over the base and project into nature. The seamless envelope with full storey- high glass and aluminium panels gives the building a light and transparent appearance. The building is organized with 3 individual zones that can be easily read from outside: The public ground floor, the non-public upper floors and the two base floors that are accessed from the lower ground level.
The public interior is defined by the 5-storey atrium, the smooth contours and the circular skylights above. The command centre and management offices on the western and eastern corner of the building are hung from the roof level with hanging columns and supported from ground level with inclined columns that penetrate and characterise the spaces. The park deck that is tucked under the infinity edge water feature and the public plaza is ventilated naturally through the open façade and chimneys that protrude through the plaza deck and the water feature. Utility cores with lifts, toilets, coffee stations and stationary stand free amidst the widened zones of the double loaded corridors thus reducing the volume to surface ratio of the building.
Due to the tight budget interiors are kept simple with exposed concrete columns and a simple interior colour schemes contrasting the monochrome exterior. The public atrium appears warm and friendly in yellow as an inviting gesture. All vertical circulation elements appear in orange. Exterior façade and interior elements such as handrails and atrium facade speak the same language and read as a continuous band.