Questione giuridica chiave
Whether the subsidiary constitutional appeal was admissible despite the amount in dispute being below CHF 15,000.
Decisione estratta
Only the subsidiary constitutional appeal was available because the amount in dispute did not reach the threshold for an appeal in civil matters.
Motivazione estratta
The remaining claims before the previous authority were below the minimum value in dispute under Art. 74(1)(a) BGG for rental disputes.