Kernrechtsfrage
Whether the cantonal court violated the appellant's right to be heard in the expert evidence proceedings.
Extrahierter Entscheid
The hearing right was not violated as the appellant could comment on the expert report; however, the court failed to adequately explain why it rejected the appellant's technical arguments on insulation.
Extrahierte Begründung
Participation in expert instruction is only constitutionally required if indispensable; post-report submissions were sufficient, but the court had to address the material argument on low-frequency sound insulation more expressly.