Plot corner setback areas

According to the state building codes, setback areas must be kept clear in front of exterior walls. These setback areas must be located on the owner's property. The depth of the setback areas is determined by the height of the wall. The exterior walls are effectively folded outwards and form the setback area.

How does the situation look in this special case:


The property is not rectangular but has a special shape (green). The building (blue) triggers setback areas (red). The setback areas are entirely on the owner's property. However, the building corner has no setback to the property boundary. Is this permissible, or must the setback be maintained diagonally as well?

What does diagonal mean? I know what you mean by that, but there is no diagonal for you. First of all, you have to maintain a clearance area of 3 (there are also countries with 2.5 meters) meters according to the state building code. You can already mark that as a frame. And then the height of the outer wall relates mathematically to the further clearance area. It is not automatically 6 meters just because your outer wall is 6 meters.

I honestly do not understand the answer. From where is a framework of 3m derived? I only know of a minimum depth of the distance area of 3m (or 2.5m).

According to the state building code, the distance areas in front of exterior walls must be observed. The depth is measured perpendicular to the wall. This results in areas without distance areas at the building corners of rectangular building bodies.

But what applies at the lower left building corner in the example above? Theoretically, the building corner can be on the property boundary and yet all distance areas in front of the exterior walls lie at the correct depth on the own property.

According to the state building code, the clearance areas in front of exterior walls must be maintained.

And isn't a building corner made up of an exterior wall?

The exterior walls are practically to be folded down

This does not apply in all federal states, e.g. not in NI, where Yvonne comes from. Therefore, she also talks about framing. In NI, your example would not be readily permissible, in NRW, where I come from, it would be, in BY, where you come from, maybe, because there is the experimental clause, which allows municipalities to enact their own setback regulations by statute. However, this is only public building code law. In addition, there is planning law and private law, especially neighbor law. Since the "folding mechanism" cannot be automatically assumed here, your example would probably also cause problems in NRW.

We had to maintain 3 m from the corner inward. It is not always good for planning. Practically, it enables accessibility to the rear corner.