Boundary construction/extension obligation

So it is indeed the case that we have to build onto the settlement house at the front again, while we have to keep the 3-meter distance where there is no more development on the right side.

Why "so"? - since you expressed the suspicion, only I responded skeptically, so who then spoke in favor?

The word "Also" here merely serves a summarizing function of the preceding…

This has a floor area of approx. 50-60 m2. Our new house is to have a floor area of 140 m2 (it is to become a two-family house)

When I compare this with the pictures in , then there is not much left of

That already sounds slightly positive.

however: I estimate about 6.5 m width here and around 55 sqm floor area. 140 would be two and a half times that. I estimate the driveway at four and a half meters, so the new house could be widened by one and a half meters. Up to the ridge of the existing houses, I see the new house presumably required to have the same profile, i.e. with the old eaves height and roof pitch, in the current rear half at most with a flat roof not perceptible from the street side, and stretched in depth to a total of about 12.50 m. Altogether that would mean roughly 100 sqm floor area and among friends and with a blind eye turned, a total of 170 sqm living space. Just as a "ballpark figure" – I guess now you’d rather take an Underberg than a Dujardin.

How do you come to the limit of a maximum of 170sqm? Oh, when I look at the current construction prices, they are more my reason to drink than the buildability.

How do you come to the limit of a maximum of 170sqm?

No limit, but a maximum of what I see achievable in the described house form. More is not excluded, but I consider the framework as described to be likely.

Please upload a site plan. Then it can be assessed more easily. It seems to be a 35er, so it might be helpful to see what has been built in the surrounding area.