Next to the building complex, which houses office space and a supermarket, is a closed, single-storey underground car park with a usable area of around 1,365 square meters. This underground parking garage offers space for a total of 55 vehicles. The garage is fully built over away from the ramp. A total of 15 supports were protected by the application of cathodic corrosion protection. This decision was made for economic reasons, as static support would have been very cost-intensive. Cathodic corrosion protection made it possible to save time and offered an efficient alternative to conventional repairs. The supports were prepared using HDW underground.