We did not touch the slope back then and on the recommendation of the structural engineer, builder, and architect, the old wall therefore remained standing and we built the house in front of it. Do you understand what I mean?
Unfortunately, the construction site of the house to be demolished is mostly flat, so no wall could be used. It only rises behind it.
With the boundary development and the windows facing the neighbors, I would rely on the architect. Our neighbor had built on the boundary; in areas where the distance to us was not maintained, he was not allowed to build windows.
That is obviously regulated the same way there. The neighbor on the left built on the boundary; there are no windows there either. I just do not know exactly how the regulation is if the three-meter distance is maintained.