Key legal question
Whether the municipal exception permit could validly override zoning limits for height, length, and density.
Extracted holding
No. The municipal council remained bound by mandatory cantonal rules and general principles governing exception permits; the granted exception unlawfully disregarded the zoning regime.
Extracted reasoning
The exception clause in the municipal building code could not derogate from mandatory higher-ranking law. The permit effectively neutralized the zone rules and exceeded the cases allowed by the cantonal regulation on permitted deviations from storey limits.