Brainstorming ideas for a house on a steep slope

I still like something like that. What do you think, approximately how much higher is the floor of the actual house there? There is basically still the basement or some sort of mezzanine above the garage. But it looks expensive and is also huge.

There is basically still the basement or some kind of intermediate floor above the garage. But it looks expensive and is also huge.

To me, this doesn’t look like a hillside house design at all, but rather a complete house for flat plots, suspended in the air and then supported by otherwise superfluous additional floors "pushed under" beneath it. From someone who wants to show that they "know hillside," I expect something completely different.

I wouldn’t worry too much yet about how the house will ultimately look (and I agree with 11ant here: this is a normal house that has just been slapped onto a base structure, there are better and more stylish solutions!).

Try to find out what the ground is like: are big supports needed or does the slope hold when you “scratch” into it. What will be the approximate effort if you build a hillside house here and what is the price difference compared to a house on flat ground with a basement (because only that is comparable)? If the difference is significant, is it feasible for you? Or can you save accordingly somewhere else?

Once that is roughly clarified, get a good architect and plan, and don’t get fixated on any fictional plan beforehand. I’m not a fan of these off-the-shelf solutions anyway, and especially not for a hillside house, as it depends so much on HOW the slope is composed in order for the planning to be sensible.

Upstairs, downstairs: that will be unavoidable with a hillside house. If that is fundamentally a no-go for you, then you can stop thinking about this point.
In terms of future accessibility, you might consider planning corresponding recesses in the floor slabs to possibly install a home lift later if needed.
Or think about a freight elevator (for groceries).
These are certainly the disadvantages of a hillside house, but you also have advantages. I already mentioned them above: unobstructable view, hardly visible to others.

We haven't had SplitLevel in a discussion for a long time...

Best regards in brief

We haven't had a SplitLevel in a discussion for a long time...

Well, Split Level was modern thirty years ago and was usually associated with smooth transitions between living spaces and stair landings, which in turn is difficult to reconcile with today's desirable construction method of a "habitable air conditioning."

And Split Level is also more suitable for slight slopes (flat, those that only make about half a floor height difference in the depth of the house). In the "vineyard," that doesn't get you far.

Google "Hausidee Hanghaus."
There are real hillside houses in there, some nicely integrated into the slope and not just placed on it.

Yes, you have to climb steps on a hillside; there's no way around it.
However, I think the steps you climb daily should be reduced. Better to climb more steps to the parking spot for the kids' trampoline.

My mother-in-law has been cursing her split-level house for 20 years.

Make sure not to plan the driveway to the garage and carport too steep. It's no fun to clear and salt in winter.

We have about 4 meters, which are currently still supported by the building. Hopefully, the wall will hold. That was off topic.