The new building is in intimate dialogue with the historically protected main house. The classic three-part facade design with plinth, finely plastered light-colored facade field and roof frieze whose eaves height is retained, are reflected in the new building. Recessed oriels at the corners and the attached balcony risalites articulated in stone reappear in the new building in a haptic translation as grooved friezes. The tilted copper mansard roof allows itself a subtle contemporary independence from the main house. Despite the same building height, the architectural team almost unnoticeably manages to accommodate an entire floor more in the structure by maintaining the historic plinth height, which subtly bisects the Piano Nobile at half height.

Even the garage entrance, which is unavoidable today, is fitted into the historic street view by sculptural relief together with the main entrance integrated behind the flat facade. The cubistic floor plans offer spacious apartments – with or without maisonette – which allow configurations in different orientations. Thus, unique apartments in quality locations are created by solving complex space economies rather than falling prey to planning opulence.