Kernrechtsfrage
Whether the 1909 municipal servitude was void because it was allegedly contrary to mandatory public law and article 20 OR.
Extrahierter Entscheid
The servitude was not void; older servitudes supporting public planning or building interests remain permissible and are not automatically displaced by later public-law regulation.
Extrahierte Begründung
Public-law planning rules and the municipal building ordinance did not extinguish the existing private-law restriction; the statutes contained no automatic abolition of such servitudes.