Key legal question
Whether Helvetia Nostra had standing to challenge the permit based on second-home and nature-conservation rules
Extracted holding
Yes. Organizations entitled under nature and heritage protection law may challenge permits alleging violations of the second-home constitutional ban and its transitional and implementing rules.
Extracted reasoning
Plafonierung of second-home construction is a federal task serving landscape protection; therefore standing under the nature and heritage protection act extends to such appeals.