Neighbor installed solar system on my roof

[David Song]

This is a duet house in Union city, ca, with separate parcel numbers, separated by a common wall. Neighbor installed a new solar system onto my side of the roof recently. My tenant told me a couple weeks ago. I called the neighboring property owner and he is contacting the solar company (sunrun) to remove the solar panels from my roof.

I was told that Sunrun got a permit and even passed city inspection.

Has anyone experienced similar situations?