any kind of structures
If they are dormers, they are also allowed on the valley side, provided they comply with the size restrictions.
maybe there is still a slim chance if one of the neighbors already has that?
If they are cross gables, you could knock on the door and ask for the planner who got the exemptions approved.
From my understanding, the eaves height is defined here as the intersection between the exterior wall and the roof covering – not the height of the gutter.
Correct. But it is 6m. That is enough on a flat plot for two floors plus an attic.
Garage with area for trash bins and garden tools.
You might have to keep a 3m distance from the sidewalk with a garage. The clause “or their lateral extension” in 1.3 of the written regulations is misleading. How do you extend an area? And laterally, no less? Without defining a directional reference, this wording is nonsense, especially for corner plots.
Otherwise, there are not many alternatives. Let me make a cheeky counterproposal:
Rotation against the specified ridge direction is justified by atypical building boundary layout and optimization for photovoltaics. Carport is also allowed outside the buildable area.