Question juridique clé
Whether the agricultural building complied with the long-term viability requirement for construction in the agricultural zone.
Solution extraite
The project satisfied the federal requirement because the evidence showed a viable, economically sound family farm with prospects for long-term continuation.
Motifs extraits
The Court accepted the cantonal court's economic assessment: the existing farm was debt-free, the planned building would improve operations and milk production, and the financing was secured by interest-free credit and a flat subsidy. General concerns about agricultural market decline were insufficient to rebut these concrete findings.