Influence of outbuildings on boundary construction

According to the lady from the building authority, that’s not possible with a 3 m distance,

I would seriously doubt that information. That would have been a case for , maybe you could ask for help in the green forum "Dimeto". A construction obligation for the main building but then boundary distance for the outbuildings seems strange to me, and to construct a transfer of distance from the neighbor’s outbuilding, which actually enjoys a boundary privilege, is even more absurd. My suspicion is that a diligent trainee misunderstood something.

I’m still confused, didn’t you just basically say "yes we are building an extension" and then in the same sentence basically "we are planning a 3m distance"? Doesn’t that contradict itself? Or are you partially building an extension (and on the boundary) and partially deeper (with 3m or now possibly 6m distance)?.

Follow the source in the second block of my post #10, there you see the misery: it’s about a very special semi-detached house, the neighbor has a normal small one and the OP a tiny one, both have outbuildings in the yard (the typical self-sufficiency setup from the 50s with rabbits from own slaughter and such). He now wants to replace the semi-detached house and is supposed to build an extension there, this was already the case two years ago in the old thread (see said link). Now he is supposed to keep a boundary distance with the extension to the new building on the cellar of the demolished semi-detached house, which I consider objectively nonsense and also a misunderstanding (or misinterpretation of the regulations), hence the reference to the expert. Adding a distance surface transfer on top of that tops the nonsense once again.

directly on the border.

According to the lady from the building authority, this is not possible with a 3 m distance because of this shed/stable, but only with 6 meters or 5 meters but then without a window on the side.

I understand, because I can recall the thread. I can imagine that the shed extension is possible, but then the distance rule applies independently. And I also believe that you are better off in this forum or in a similar one, but more professionally competent.

I can imagine that the shed extension is possible, but then the distance rule applies separately.

We regularly have the case of one-sided boundary extensions—more often in rural areas than here; both in pairs and sporadically. The obligation to build attached usually continues with new constructions, and I can't recall any case where this would be different in the rear area. Except that in a case like this, factual building windows are regularly formed, whereby the new buildings in the area of the main buildings may be two stories and in the area of the sheds may be one story.

We regularly have cases of one-sided boundary construction - more often in green areas than here; both in pairs and randomly. The construction obligation usually continues with new builds, and I can't recall a case where it was different in the rear area. Except that in a case like this, factual building windows are regularly formed, whereby the new buildings in the field of the main buildings may be two-story and in the field of the sheds one-story.

It was said earlier that we have to attach to the existing building at the front.
At the back (at the shed), we were/are not allowed to build on, as (according to information at the time) the shed/stable was considered an outbuilding/no residential room and no residential building was allowed to be attached to it.

How high is the shed?

Isn't there a 3m limit in height? If it is more than 3m, a larger required distance might possibly apply?

How high is the shed? Isn’t there a 3m limit in height? If it is more than 3m, could a larger necessary distance possibly apply?

This normally applies (as a rule for detached buildings, i.e. boundary setbacks on all sides) to privileged buildings, but not the height, rather the average wall height on the boundary side. And also to each building itself and not its neighbors. I maintain my advice to escalate the question at the said point to a specialist.