Question juridique clé
Whether Helvetia Nostra had standing to appeal the building permit.
Solution extraite
Standing had to be recognized because the project involved a federal task within the meaning of the Nature and Heritage Protection Act framework.
Motifs extraits
The Court relied on its 22 May 2013 precedent: organizations entitled under Art. 12 al. 1 let. b LPN may appeal where the dispute concerns a federal task; the construction permit for a secondary residence falls under directly applicable federal constitutional rules.