Single-family house - approx. 160 sqm - basement - hillside location

The development plan is from 2014 and is indeed pure arbitrariness, which can also be seen in further stipulations or in the reasoning. However, this should not be the topic now.

I could not derive a value x from your sketch. If it corresponds to my interpretation, I do not believe that the approval authority shares your view.

This corresponds to your interpretation and has been applied in various projects within the scope. In addition, I have been able to review execution plans, as we already know the immediate neighbors.