Questions about the development plan (full floors, knee wall)

The traffic area, to which the eaves orientation is to be aligned, simply means, broadly speaking, a street, a driveway, or a sidewalk. Your knee wall, as you yourself say, should be clearly a maximum of 70 cm according to the regulation and is therefore already too high in the "1m" version. The term wall height is not known to the development plan for interior walls, but only for house walls, and is used where the building applicant otherwise imagined a legal vacuum, where a flat roof house would not have any clear eaves or gable sides. A development plan does not designate interior walls within the attic as such. A knee wall always means extending the exterior wall higher as a "Drempelwand."

Thank you very much for the quick response.

The 1m knee wall was just an example, sorry (the 70cm is clear).
Would the new sketch (see below) work then? 2 full floors + attic without knee wall?
The roof may have a minimum slope of 25 degrees. Is it possible to build a house like this with a maximum height of 8m? I have always calculated 3m per floor so far, is there maybe some leeway? We would like a clear room height of approximately 2.5m.

Thank you all!

New sketch (see below) would be possible then? 2 full floors + attic without knee wall?

Yes.

Can you build a house like this with a maximum height of 8m?

Yes.

I have always calculated 3m for a floor, is there maybe some leeway?

Yes.

We would like a clear room height of ~2.5m.

The details have to be specified by a structural engineer. I usually assume a 30cm raw ceiling with 10cm build-up. But there are also ceilings that are 20cm thick. Your reference point is the natural ground surface. Due to the considerable slope, many parameters arise that can be experimented with. Example: lowest terrain at the house = 0.00 top edge finished floor two steps above terrain = 0.34 ground floor clear height 2.50 = 2.84 "savings ceiling" with build-up 0.30 = 3.14 upper floor clear height 2.50 = 5.64 "savings ceiling" with build-up 0.30 = 5.94 roof construction thickness 0.40 = 6.34 adjacent side = opposite side / tan a = (8.00 - 6.34) / tan 25 = 3.56, i.e. the house may be a maximum of 7.12m wide.

For the plot marked with an arrow at the turning circle, the development plan unfortunately only allows single-story construction = one full floor.

For the other plots, it also does not become clear to me how two full floors can be built, while at the same time this requirement in the textual explanations can be met:

"Knee walls are only permitted up to 0.70m in height - measured from the top of the raw ceiling of the ground floor to the bottom edge of the foot purlin"

Here, the reference point for determining the height of the knee wall is not the upper floor ceiling, but specifically the ground floor ceiling. A strong hillside location, with access to the plots on the hillside (=ground floor) and the basement as a full floor, does not seem to be given at first glance, or is that the solution to the puzzle?

I am curious what the logical explanation here is?

Thank you very much for the great answers.

: the arrow is not from me I have attached a sketch with our property again below (the hatched area!).

: Thank you very much for the detailed response. We have an appointment with the architect on Wednesday. I'm curious to see what possibilities he will show us. A house with only 7.12m width is already very narrow. Then we probably prefer to stick with the low knee wall.

Best regards!

Thank you, the arrow led me on the wrong track.

The architect will surely find a good solution here for an implementation taking into account the requirements of the development plan. It seems as if the development plan does not regulate the formation of bay windows - perhaps a possible idea to consider.