Single-family house, single storey, knee wall, upper floor window

The second photo is under 160 KS, I think

But not much and hardly possible with dormers (must be calculated precisely)

Hello!

And that was exactly what my question was aiming at, because somehow there is a lot of room for interpretation in these calculations and 'my' architects also come to different results. I think they have considered all the 'tricks' to extend the 2.20m as far outward as possible!? Assuming net area on top, subtracting wall thicknesses, etc. I hope for the 'etc.' from you!

Best regards
Tom

The smiley is missing in the last sentence:

Is that a real architect, or a planner from a house construction company? In my experience, they rarely feel like venturing too far out of their product world (understandable). As already mentioned: with a dormer and no gimmicks on the ground floor, not much knee wall is possible with a gable roof. Mathematically, it would be possible to build an upper floor with 2.19 m and a flat roof (but it makes little sense). Alternatively, the Mediterranean villa (stepped floor) is of course possible - maybe not a bad solution in your case.

Freely planned, with independent architects!

In drawing, I come to 1.60m.

11x11m footprint = 121m2 x 0.66666667 = 80.67m2

Assuming a building envelope 0.5m thick, about 10x8.10m remain.
Divided up, taking into account the dormer area of 3m2, but subtracting the interior walls also considered as 3m2, again results in 81m2.
Drawn and measured with an interior width of 10m, interior length of 10m,
The 2.20m clear height taken each time one meter from the interior wall of the house width results in a measured 1.60m knee wall height.

Is that correct?
Without submitting a floor plan!

Now the question is whether anything else can still be calculated in favor of the area and the architects do not know.
Maybe there isn’t any more. One at least includes the interior walls in the calculation, another does not!