Kernrechtsfrage
Whether the administrative federal appeal was admissible against a cantonally based exception permit under spatial planning law.
Extrahierter Entscheid
The administrative appeal was not admissible because the challenged exception permit rested on cantonal and communal law, not on directly applicable federal law.
Extrahierte Begründung
Art. 23 RPG refers exception permits within the building zone to cantonal law and does not itself create an independent federal-law decision subject to administrative appeal.