Kernrechtsfrage
Whether the later-built awnings, winter garden, biotope and pool could be assessed under Art. 24c LAT and Art. 42 OAT
Extrahierter Entscheid
Yes, the cantonal court had applied the wrong test: the relevant question was whether the pre-existing house, garage and annex were lawfully erected and thus eligible for a measured enlargement assessment; the matter had to be re-examined.
Extrahierte Begründung
Art. 24c LAT protects lawful pre-1972 structures that later became non-conforming. Unauthorized later additions are not themselves protected, but the legality of the underlying buildings must still be examined before determining whether the new works are admissible enlargements.