Questão jurídica principal
Whether the residential-use ban for the former barn was finally unchallengeable.
Decisão extraída
The refusal to authorize residential use had become final because the appellants did not timely challenge the 2005 refusal decision.
Fundamentação extraída
The 2005 cantonal and municipal decisions clearly refused the change of use and were served through counsel with a remedies notice; no appeal was filed.