Questione giuridica chiave
Whether forest setback lines must be established for all forest parcels in building zones after the 1991 revision of the planning and building act.
Decisione estratta
Yes. Under the revised law, forest setback lines must be fixed for all forest parcels in building zones.
Motivazione estratta
Where such lines are still missing, this constitutes a missing planning measure within the meaning of § 234 PBG.