Kernrechtsfrage
Whether the amended project unlawfully altered the exterior appearance or constituted prohibited courtyard overbuilding.
Extrahierter Entscheid
The installations were barely visible and did not change the building's appearance; the shaft under the stair did not count as prohibited courtyard overbuilding.
Extrahierte Begründung
The devices were sunk into the ground or hidden under an already permitted stair; the courtyard's function and perception did not change. Even if an overbuilding were assumed, a special situation justified an exception under municipal rules.