Kernrechtsfrage
Whether the Foundation had a contractual basis to claim maintenance contributions from the co-owners
Extrahierter Entscheid
The cantonal court's finding that the Foundation had taken over the maintenance mandate and could claim contributions was not arbitrary.
Extrahierte Begründung
The appellant's conduct, especially continued use of the Foundation's management and partial payment of charges, objectively supported implicit consent to the transfer of the mandate; the constitutional complaint did not show a manifestly untenable assessment.