For us, it was (unconsciously, but to our advantage) such that the architect "made a mistake" and did not comply with the 3m distance to the street. In other words, the wall has the prescribed distance, but the roof overhang extends into these 3m. As I said, it's fine with us, but we did not commission it that way. Eventually, we only received a "ticket" from the building authority and had to pay <100.-€. I suppose it would be similar with a bay window...