New single-family house on sloping plot

The expert shouldn’t just be scratching his head because of the parents' bathroom. The kitchen drains into a floor drain in the garage? Where is the kids' bathroom supposed to drain?

I don’t see any problem at all reaching the garage wall. How was it? With a 1% slope, shit floats best?!

But this winter is not representative and besides, in the TE’s region there is likely quite a lot of snow in normal winters. Where should one go then, lacking alternatives? Through the garage?

A staircase to the entrance I found rather unspectacular. Should we put a roof over it as well? Some kind of staircase the TE has to take. Whether inside or outside – a slope remains a slope.

Many heartfelt thanks for your latest sketches!

Generally asked: What is actually so bad about an entrance in the basement area without an external staircase?

General question: What exactly is so bad about an entrance in the basement area without an outside staircase?

Not really. However, I don't like it.
Have you found out if you perhaps have something like an online elevation map for your federal state?

You run more and longer when it rings.

Are you even allowed to build that far forward now?

There should be elevation data, but it is not suitable for smartphones. A notification appeared on the Geoportal yesterday