Question juridique clé
Whether the attached one-story structures qualified as 'special buildings' under Zurich planning law
Solution extraite
They did not qualify as special buildings because they lacked sufficient architectural and visual independence from the main building.
Motifs extraits
The court accepted the cantonal court's overall architectural assessment: the annexes were not optically, constructively, and functionally independent; the unified street-facing façade and terrace-roof integration supported treating them as parts of the main building.