The project "New Town Hall Langenhagen" includes the extension and renovation of the existing town hall in Langenhagen. The existing building will be preserved with regard to its load-bearing structure and façade and adapted to the new spatial requirements in the interior. The area of the existing council hall with associated foyer, meeting rooms and underground car park will be demolished. The 5-storey extension building is being built on the section adjacent to the existing building on Konrad-Adenauer-Straße and connects to the existing building via two floors in the area of the council hall foyer to be demolished. The new underground car park will be connected to the existing cellar via two entrances (north and south). The maximum planned building height of the new building is 18.55 m. Thus, the construction project is a special construction in building class 5. 153 parking spaces will be built for the construction project. 28 parking spaces are located in the parking lot of the eastern forecourt, 125 parking spaces are accommodated in the underground garage.

The construction project will be realized in two construction phases: In a first construction phase, the new part will be built. After completion and occupation of the extension, the existing building will then be renovated.

- Flat roof waterproofing and insulation work approx. 4,500m²

- Production and dismantling/disposal of logistics area RC material 2.236m²

- Green roof extensive / maintenance routes approx. 2,000m²

- Installation and sealing of façade gutters approx. 1,000m

- Absturzsicherungssystem / Seilsicherung ca. 280m