Key legal question
Whether the cantonal court violated the right to be heard by inadequately reasoning its finding that the basement counted as a full storey under § 138(1) PBG.
Extracted holding
Yes. The court did not explain sufficiently why, using the palisade wall as reference, more than two-thirds of the level emerged from the terrain.
Extracted reasoning
The decision must state the essential considerations. The cantonal court relied on a conclusion unsupported by the plan and gave no understandable basis for the decisive factual finding.