Questão jurídica principal
Whether the constitutional complaint was admissible as to alleged violations of cantonal building law and standing to invoke neighbor-protecting norms.
Decisão extraída
Only the hearing complaint was admissible; the other grievances failed because the appellants did not sufficiently show arbitrariness or a protected neighbor interest.
Fundamentação extraída
The court held that aesthetic rules such as § 238 PBG do not protect neighbors, whereas rules on permissible use and basement count may have neighbor-protecting effect. However, the complaint did not sufficiently explain how the appellants were affected or why the cantonal-law objections were arbitrary.