Key legal question
Whether the appellate court wrongly applied the absolute method and reduced the landlord's investments to 70% in calculating net income under Art. 269 CO.
Extracted holding
The appellate court correctly used the absolute method and was entitled to count the renovation investments only at 70%, consistently with the landlord's own prior position and the evidentiary record.
Extracted reasoning
Investment costs are relevant in both gross- and net-income calculations. The landlord had itself relied on the 70% approach in the cantonal proceedings, so no remittal for further fact-finding was warranted.