Single-family house with gable roof approx. 137 sqm, 1 full floor

Don't think so, why? See (subsequently added) sketch.

Just noticed now. But that is our ground floor, I believe, and was only called basement because of the elevation profile.

Additionally, the straight staircase, which takes up a lot of space in an already not very large house (see hallway upper floor with 11m2), which the other rooms lack.

The straight staircase was actually the reason why I started this thread here. I already thought that another stair shape would make more sense and wanted suggestions for this

Why was the basement (better finished basement level) actually discarded? For cost reasons?

Exactly. The architect’s price estimate was at least 60-70 TEUR for a basement – unfortunately, that is nowhere near feasible... The plot is also not nearly as hilly. I had already edited in my post a few pages earlier that the dashed line does not represent the current plot layout. Where the house is supposed to stand is a level area, which only rises again after the house. This is about 1.80 - 1.90 m up to the end of the plot. So it’s quite manageable.

I can’t find the spot anymore: is there a building envelope? Why not set the house further back? Or a long house that just touches the building line at the front?

The building envelope is the front parcel due to §34 Building Code – at least that’s what the architect says.

[ATTACH alt="Bild1.jpg"]45358[/ATTACH]

just saw it now. But this is our ground floor, I think, and was only called basement because of the height profile.

But this is not my drawing, must have edited it that way. We don’t have a basement

The property is not nearly as hilly. I had already edited in my post a few pages earlier that the dashed line does not represent the current property boundary.

Can you sketch that in the architect's drawing? If necessary, print it out, draw the line with a pen, and photograph it.

Can you sketch that in the architect's drawing? If necessary, print it out, draw the line with a pen, and take a photo.

Should look something like this:

Speaks in favor of placing the carport to the front and downwards. Provides light in the west