Honestly, I can't imagine that a two-story building or a eaves height of over 6 meters is allowed here in the residential area, just 1.5 meters away from the street. That restricts the view, doesn't it?! I can more easily imagine a single-story. However, for other ideas (a two-story combination with an extension) the plot is too small. On the eaves side, it is also restricted by the fact that the house layout is longer in the back than it is wide. But if I consider the 3 meters to the street, then nothing more than a 9.5 x 9.5 house (excluding a garage for now) is possible if the eaves side is also taken into account. So shall we consider the 1.5 meters as fixed?