Question juridique clé
Whether Helvetia Nostra had standing to challenge the permit.
Solution extraite
Standing had to be recognized under the Federal Court's prior case law on associations entitled to appeal in nature and landscape protection matters.
Motifs extraits
The permit for a secondary residence concerns a task of the Confederation and Helvetia Nostra belongs to the associations authorized under Art. 12 para. 1 let. b LPN.