Bypass building boundary through land extension instead of division

Hello everyone,

I have the following question.
My parents will bequeath a plot of land to my sister and me, which directly borders theirs.
I have outlined this in red in the following development plan.



The plot and house northeast of the outline is my parents' property.

Currently, there are still 2 garages and an old workshop on the plot. Once these are demolished, my sister and I want to build a semi-detached house there.
According to my current understanding, there is then a building setback of 3 meters on both sides of the plot that must be observed (also at the front and back, but this is not relevant to the question and is therefore not marked). If a semi-detached house stands in the middle, a garage may be placed on one of the two building setback boundaries, while the other side must remain free.



But how would this behave if my parents' plot is expanded?





Would one of the building setback boundaries then be eliminated? Is that possible?

Best regards
Basti

Is it allowed to place a garage on one of the two building boundary lines, while the other side must remain free.

That is not correct. In general, a total of 15 meters of boundary construction with a garage is allowed, with a maximum of 9 meters on one side.

Nevertheless, I cannot follow your reasoning.
The small o stands for open construction method -> just google it, and a plausible solution will probably become clear to you.

Oh, you mean that you want to build on your parents' property? In short: the owner of the house is the one who owns the land. No buts, no exceptions.

I suspect he means that the two parcels of land so far (parents' property and workshop/construction site) are to be merged into one parcel so that the distance requirement between the semi-detached house property and the parents' house no longer applies.

I suspect that you can solve this differently by obtaining approval from the neighbors (parents) that a boundary construction for a garage is also allowed on the second property boundary.

I suspect he means that the two parcels so far (parents' property and workshop/construction site property) should be merged into one parcel so that the distance requirement between the semi-detached house property and the parents' house no longer applies.

I suspect that you can even solve this differently by obtaining approval from the neighbors (parents) that a boundary construction for a garage may also be built on the second property boundary.

Yes, that is exactly what I meant. According to the information I have had so far, there is no such thing as "obtaining permission," but the regulations are fixed and cannot be overridden. Therefore, I was looking for another solution.

A permission from the neighbor is not enough; he must also take over the setback area. And here problems arise if the parents can no longer build anything in the setback areas or if the existing garage would have to be demolished.

In principle, it should be possible to unite the properties and then divide them ideologically through a community of owners. The disadvantage is that you then have a community of owners and can interfere with each other. This is especially a problem if not everything remains in family ownership or if there is a dispute.