Site planning on a gentle slope with filling

What advantage do the municipalities have if they approve a basement instead of a fill? Apart from the fact that the house can be smaller above ground since some rooms can be relocated to the basement. From a street view, in my case, I see more of a disadvantage if there is a 1.5m ditch on the left and right sides of the house instead of a fill with planting at street level.

The ditch only comes about if the neighbors on both sides create fill. Every avoided terrain intervention is also an avoided intervention in the soil's density structure and thus in the water cycle.

Point 1 is correct as stated. The sealing by paving and the ground area of the house has a greater influence on the water cycle than a permeable frost protection gravel layer? And whether it really bothers the community so much that they refuse an embankment and refer to a possible basement, which also requires terrain interventions, I don’t know..

To get to the point: I was actually only concerned with the design of my sloping little hill :D The embankment will definitely not be higher; a little lower is worth considering.

Does the sealing by paving and the building's footprint have a greater impact on the water cycle than a permeable frost protection gravel layer?

The sealing caused by paving is already recognized as a problem. And precisely the tinkering with stacks of layers of varying density or permeability is disturbing.

I would at least construct the driveway/pathway horizontally so that it reaches approximately street level = floor level (a 1-2% slope towards the street can be planned). 10-20cm on the large area is a lot of gravel.

What do you mean by parallel to the house? Starting behind the house and terraced downwards was also a consideration. Can something like that be done with shuttering blocks or would L-blocks definitely be necessary? The uninspired 4 raised beds are because I was uncertain during the design, there would be more coming :D

That’s exactly what I meant. You do need level areas for pond, deck chair, trampoline etc., but not continuously connected. It should look pleasing from all sides. We created 2x 40 cm height offsets because it was much cheaper and easier than filling the whole area. These 2x 40 cm annoyed me at first and now I love them. Pleasant to work on and they don’t get in the way. No idea what stones are needed. It also depends on the height and what you are supporting. We have sandstone walls. The new ones are 40 cm, 90 cm and 80 cm high, the old one up to 300 cm. However, according to the structural engineer, the old one should never remain standing. Well, it has for over 100 years. Don’t underestimate the costs for filling. The walls, the material and the transport costs.

Do not underestimate the costs for backfilling. The walls, the material, and the travel costs.

And that is exactly the point where a house without a basement initially seems cheap. But every backfill also needs to be supported again. Sloping steeply is possible, but it’s a mess.