cb19 is a minimalist residence located in Berlin, Germany, designed by zanderrotharchitekten. The residential buildings in Christburger Strasse are striking through the flexible portioning possibilities of their floor plans. By using wide-span ceilings, it was possible to do without any definition of the floor space. There are no load-bearing walls or supports, allowing free floor plan distribution for the apartments, which have direct access to an elevator. Due to fire protection regulations for the emergency exits, a special accessing system was developed using continuous balconies on the rear sides of the building to turn the stairs into the emergency stairs. The front sides of the building present the showcase view, with enormous, elegant window glazing.