Question juridique clé
Whether the restaurant conversion was subject to building-permit requirements under Art. 22 RPG.
Solution extraite
Yes. The organized, permanent restaurant use was sufficiently intensive and had spatial effects, so it required a building permit.
Motifs extraits
Even a use change without major construction work is permit-relevant if it is new, organized, recurrent, durable and of significant intensity; here the planned operation could burden access and the environment.