Kernrechtsfrage
Whether the term "two-story" in the servitude had to be interpreted under Art. 738 ZGB by reference to the deed and, if unclear, to ordinary/locally used building terminology.
Extrahierter Entscheid
The term was not self-explanatory; the deed required interpretation, and it was permissible to use local building terminology and the municipal building regulations as interpretive aids.
Extrahierte Begründung
A basement partly rising above ground does not automatically make a building three-story. For a third-party acquirer, the wording in a servitude tied to development of the burdened land may be understood in line with the local zoning terminology, unless expressly defined otherwise.