A cantonal court ruled that the occupant of the upper part of a two-home property may refuse the lower occupant's proposal to install solar panels on their shared roof. The court found that there was no concrete plan covering the number and type of panels and equipment, no approved installer had been chosen, and the insurance implications were unclear.

The upper occupant cited planned construction of a roof terrace, concern about installation noise and fire risk, and the fact that roof access is through a pull-down stairway in her bedroom. The court held that these interests currently outweigh those of the lower occupant. The refusal could be reconsidered if the lower occupant substantiates that her living enjoyment would not be affected and that no alternative panel location is possible. The upper occupant must permit roof access through her bedroom for further investigation, potentially with an installer.