Floor plan: Semi-detached house 8x12m. Opinions and creative ideas welcome :-)

Yes, although I have to say that I did not understand Yvonne's explanations. But it doesn't matter because the situation here is clear. I even suspect that the person who commissioned the subdivision of the plots also had corresponding building encumbrances registered, as otherwise, in the case of individual sale of the plots, it could happen that no one initially wants 530 or it is initially not developed, but 531 and 532 agree to build a semi-detached house, so that for 530 actually only the 5m remain, which surely no one wants. Yep. Replace single-family house with detached house, because single-family house means single-family house, and that can also be a semi-detached house

Seller is a municipality

That does not bode well. So you consider my worst-case scenario using the example of 530 possible?

For example, a builder decided not to build a semi-detached house but a single-family house (I'm learning) and preferred a narrow 7m of a 10m semi-detached house.

For example, a builder decided not to build a semi-detached house but a detached house (I'm learning) and preferred a narrow 7m one of a 10m semi-detached house. The neighbor had to follow suit...