The buildings at Hochstraße 33 to 41 are to be demolished and replaced by an energy-optimised building. For that purpose already today the requirements of the Energy Saving Ordinance (EnEV) 2014 are being applied which only have to be fully met from 2016. Heat is supplied by means of heat pumps and the use of waste heat by connection to the district heating network. Particular importance is attached to the coordinated air-conditioning and ventilation of the building with heat recovery. On the other hand, the possible use of photovoltaics was dispensed with for  accounting reasons. The project shows possibilities of an implementation of energy-optimised construction, without falling back on technical solutions going further and is therefore a good example of the implementation of and support for climate targets in the everyday life of a large number of building owners."