Questão jurídica principal
Was the increase in pig stock subject to a building permit under Art. 22 RPG?
Decisão extraída
Yes. A change in use that materially alters the operation of an agricultural building is permit-required even without structural alterations.
Fundamentação extraída
The new husbandry concept changed the planning-law use of the stable. The increase by more than 100 pigs was not merely minor and affected the scope of inner expansion.