Floor plan optimization city villa + fill consideration

No, split-level is not for us. Our dream is a city villa.

Why don't you plan a split level

Because of about 80/90 cm height difference in the building envelope?

Due to about 80/90 cm height difference in the building plot?

If you raise the ground floor and garage at least to street level, there would already be about 1.30 m height difference from the living room floor to the garden at the back.

Does this help?

A tip for the terrace: My sister’s house is 1 meter above the garden level. From the terrace at one point on the side, a staircase leads down to a paved walkway toward the garage. At the back, on the same level as the terrace, there is about 2 meters of flat lawn (on an embankment), from which a slope with a nearly 1:1 incline goes down into the equally flat garden area below. Kids love racing down it with their Bobby cars, etc., and from the terrace it looks nicely open. If I had a property like that, I would also create such a "ramp" for my kids. If they ever fall there, they land on soft grass.

- Would you raise the ground? The house would be 40cm below street level. From the terrace to the garden it would then be 1m. You could only raise the ground for the house. Then the difference from the terrace to the garden would be about 1.6m. So far, I don’t know anyone who lives in a house below street level. Raising the garden would probably not be possible without permits. The affected neighbors certainly would not grant them either. To the right and left of the house towards the neighbors, you can probably only raise up to certain limits. I am a bit overwhelmed with the decision.

Are there already houses on your side of the street that you could use as a reference? Or are you the first to build there with this slope?

I would basically approve of raising the ground if a basement is not an option for you. In which region are you building? In some places, fill gravel is currently available at a low price because the gravel pit operators urgently need space for soil disposal (excavated soil).

Within what limits is it allowed to raise the ground and how far? You can model suitable slopes accordingly from the terrace. As long as you only need an exit to the garden via the terrace, I don’t see any major problems.

Because of about 80/90 cm height clearance in the building envelope?

The OP wrote something about approx. 1.6 m