The 15cm step is not randomly the now missing delta in the clearance height?
I have an appointment there at 9 o'clock and will show up armed with a tape measure.
The clearance height of the door was 184cm. I think, with the upper and lower frame, you would already reach 201cm, so that the additional 15cm should be visible. But I could be mistaken.
The parapet height only applies to windows, not doors. But the crucial point will be whether the door frames start exactly where the window frame starts. That should be at 12.5cm.
You are probably right and something doesn't fit there.
Nevertheless, the much bigger challenge is to assess whether, by approving the planning, I assume full responsibility for this mess or whether it is so negligent or actually violates regulations that one can still oppose it.
They say they talked to me about how it will be executed; yes! But they didn't say whether I was aware that, as a 189cm person, I have only a 184cm clearance. As I understand it, they include the threshold and see absolutely no problem. They also don't understand the fuss.