Key legal question
Whether the administrative law appeal was admissible regarding the lack of legally secured access
Extracted holding
The appeal was not admissible on that point because the access question depended on cantonal law without a close connection to reviewable federal building-law issues.
Extracted reasoning
The sufficiency of access is a federal concept, but its concrete requirements stem from cantonal law; here the challenged decision rested solely on cantonal and communal law, so the proper remedy was the constitutional complaint.