Key legal question
Whether the public-law appeal was admissible and the neighbor had standing to challenge the building permit.
Extracted holding
The appeal was admissible: it was filed in time against the final cantonal decision, and the neighbor could invoke boundary-distance rules protecting neighbors.
Extracted reasoning
The court held that standing exists when the complainant is affected by norms protecting neighboring interests, including setback rules, and when the alleged unlawful effects touch his protected sphere.