General criticism of architecture, spatial layout, exterior appearance

Poorly put... a basement always costs more. In our case, the costs are somewhat cheaper, but still higher than without a basement.

Although, in my opinion, given the expected above-average earthworks, we would now be at the question of whether a basement is overall more economical than the staggered floor (which would then, of course, be omitted). But the OP does not want to discuss that...

What happens to the remaining plot?

Filling?
Stairs to the garden?
How to support?

Earthworks costs.
Soil, transport, installation including compaction
At that height, I would request plate load tests

Whereas, in my opinion, given the expected above-average earthworks, we would now be at the question of whether a basement overall is more economical than the staggered floor (which would then of course be omitted). But the OP does not want to discuss that...

We have already discussed this topic several times and always came to the conclusion that a basement is even more expensive. Currently, it would hardly be possible to make a new design.
Assuming we do a basement, then the utility room and storage would have to go down. The pantry would remain upstairs. At least the study would also have to go into the basement, and then the proportions would not be perfect. Thus, the area would increase overall. Certainly feasible, but a study with daylight is more pleasant than without.

What happens to the remaining plot?

Filling up?
Stairs to the garden?
How to support?

Earthworks cost.
Soil, transport, installation including compaction
Given the height, I would demand bearing plate tests

Filling up, since we don’t want stairs to the garden. The earthworks were roughly estimated at just under 20k. If everything works out, we should manage it for 8k. We are curious if it will work.

Earthworks are quite expensive here, but as you outlined yourself in #59, the filling under the house area is absolutely a lot, but relatively peanuts compared to the "remaining" plot. Replacing this small part of the filling with rooms and walls – offset against the costs of excavation, rooms, and walls – doesn't make a big difference.

Peanuts compared to the rest?

So, then please explain to me with which material you would fill the house area, carport, house entrance, and with which you would fill the garden?

We have discussed this topic several times and always came to the conclusion that a basement is even more expensive. Currently, it would hardly be possible to make a new design. Assuming we make a basement, then the utility room and storage would have to go down there. The pantry would remain upstairs. At least the study would have to be moved to the basement, and then the proportions would not be perfect. Thus, the total area would increase. Certainly doable, but a study with natural light is more pleasant than without.

Filling, since we don't want stairs to the garden. The earthworks were roughly calculated at just under 20k. If everything goes well, we should manage it for 8k. We are curious whether it will work out.

Never 8. Even if you get the soil for the garden for free. Calculate how many cubic meters of material you need just for the area of the house, carport, driveway, and entrance area...

Assuming we build a basement, then the utility room and storage room would have to go down there. The pantry would remain upstairs. At least the study would then have to be moved to the basement and the proportions wouldn't be perfect. So the total area would increase. Certainly doable, but a study with natural light is more pleasant than without.

A basement level is not a cellar. It has normal windows. Usually, it is planned on the least attractive side with technical and storage rooms. The rest are normal rooms. Exactly how a solution could look here depends on the heights.

Filling, since we don’t want stairs to the garden. Roughly, the earthworks were estimated at just under 20k. If everything goes well, we should manage it for 8k. We are curious if it will work.

If that works, it’s definitely cheaper than I had thought. Then you are right. But I can hardly believe it.