Newly built single-family house approx. 170m² city villa

This is not fixed at all. According to ZTV E-Steuerberater, it is interlocked and overbuilt by 1m during construction, compacted, then restored to the specified slope and subsequently revegetated.

So it is fixed after all

So it is fixed after all

Compacted, fixed for me means with water construction stones or something similar, maybe also if I carry out ground stabilization using a binder. But like this, I don't see it as fixed.

You will plant it extensively (lawn etc.) to prevent erosion. As soon as a torrent flows to the neighbor, there will also be a need for discussion. For safety, you could set a curb or a depression at the boundary, possibly with drainage, so that nothing splashes over.

I have neighbors here with L stones who are now arguing because the water is pressing through the previously celebrated, expensive, and in new condition attractive L stones...

I positioned the house so that there is a clear view of the field to the back. To the south, there is a green strip with corresponding planting/forest as specified in the development plan. Hence the orientation of the living space including the terrace towards the west.

Yes, how terrible, I wouldn't want to see forest and green strips either. Better tractors then!
No, just kidding. If it really has to be the west, I would still try to minimize the paths and maximize the garden:

You will plant it comprehensively (lawn etc.) to prevent erosion. As soon as a flash flood goes to the neighbor, there will also be a need for discussion. To be safe, one could still put a curb or a swale at the boundary, possibly with drainage, so that nothing overflows.

I have neighbors here with L stones who are now arguing because water is pushing through the previously celebrated, expensive and originally attractive L stones...

He has already dug in and built an L wall. I have planned a berm about 1 meter wide for this. On this, I roughly model a swale that directs water from the boundary towards the western field path. If there should ever be water overflow, I have really done everything possible. I just am not a fan of these concrete elements, even though the garden landscapers make a lot of money with them. Since I have the space, I want to design it as naturally as possible.

Yes, how awful, I wouldn’t want to see forest and green strips either. Better tractors!
No, just kidding. If it’s going to be the west, I would still try to minimize the paths and keep the garden as large as possible:

I’m fond of tractors Just kidding, but the forest does cast shade, which is definitely pleasant, but we simply prefer the view towards the field and then the forest. It makes everything feel more open and brighter. Thanks for your sketch. I want to do it somewhat like that, but smoothly blend the height difference of about 1 meter to the street and not create a big ramp. I just want to be a bit higher than street level because I find it visually more appealing. My hydraulics professor always said: “Build higher than your neighbor.”

Placing the front door where you placed it was also my first thought. However, this was not possible because we want the kitchen and dining room facing the terrace and want to connect the garage and utility room.

Placing the front door where you placed it was also my first thought. However, this was not possible because we want the kitchen and dining room facing the terrace and want to connect the garage and utility room.

So you mean the useless utility room door to the garage is so important that you’d rather concrete half the property? For that, you also accept this narrow space you call dining room/kitchen and the smell of the cars that regularly drifts into the house? Mmh, okay.