Kernrechtsfrage
Whether the planned conversion of the existing weekend house into a permanent dwelling could be authorized under Art. 24a RPG.
Extrahierter Entscheid
No. The current use largely results from unapproved structural changes and an unapproved intensification of use; therefore Art. 24a RPG cannot legitimize the conversion.
Extrahierte Begründung
The court treated the reference state as a tolerated weekend house only. Later kitchen, bathroom, heating and other changes were not duly authorized and created a substantial increase in residential use. A baubewilligungspflichtige Zweckänderung excludes Art. 24a RPG, which cannot serve to retrospectively legalize unlawful construction.