Appeal Regarding Deletion of Residential Right and Registration of Tenancy Agreement

The case concerns an appeal against a registrar's refusal to delete a lifelong residential right (Wohnrecht) granted in an original, publicly notarized property sale agreement and to register a subsequent rental agreement between the same parties concerning the property. The court reasoned that the mutual agreement to extinguish the formal residential right, which was granted in a notarized document, did not require the same formal notarial certification under Articles 12 and 115 of the Code of Obligations (OR), as its termination did not constitute a modification of the original agreement but rather an extinction, potentially achievable even by unilateral waiver. Furthermore, a subsequent waiver of the remaining purchase price balance constituted a release of an obligation under Article 115 OR, which, according to the court's strict interpretation of form requirements, is permissible with simple written form, thus allowing the deletion of the right and the registration of the tenancy.