Layout Planning: Bathroom Shower

Here you can clearly see that the offset cannot be used to advantage. The doors to the parents' area take up too much space.
Just by the way - the guests then use the parents' bathroom as a guest WC?

I don't want to ruin your draft even more, but if you start messing with the walls and the concept now, you might as well go all in:

You are building 3 floors here, of which the lowest is used only as a basement despite having an entire side with windows. That is incredibly expensive and, in my opinion, a waste of the highest order. Instead, you cram the parents' area into the first floor, where there will be a lifelong shortage of space—both in terms of closet space in the walk-in and storage options.

Since we don't know the plot or the street, of course, you might have good reasons not to develop the basement as living space. It might also be a financial decision specific to your planner.
I don't want to overturn everything, but if it were mine, the children would go into the basement, the parents into the attic, overall floor area slightly smaller to remain financially neutral, and the entrance including stairs to the left of the plan next to the garage.

Since cardinal directions and terrain elevations are not yet known, it could still turn out very differently. If one had exact information, I would make a sketch—if it would even be an option at all.

I have to correct myself. In #18 the property is shown oriented to the north. House in the second row - how nice! So no direct street noise. Is the ridge direction prescribed in the development plan?

@

In short:

- Guests do use the large bathroom, yes. A guest toilet is out of the question for us. We currently have one (only a toilet + sink in the smallest space), it is never used, even when guests are here. We've never had a problem with that.

- You did not ruin the draft for me at all we are very happy

- Basement: oh dear, we've had that on the table more than once. Even the building authority thought it was a very great idea to solve the lack of space in the attic due to regulations. Very briefly: Even if windows are possible in the basement at the front and front side and even if we actually have the basement planned as living space here (except for the utility room, everything is full living space), it is out of the question for us to shove children into the basement.

- Parents in the attic is out of the question for us, as then we would have two floors to overcome in old age. I also don't want to have my bedroom beneath a sloping roof all my life.

- Entrance and stairs on the left side of the plan is definitely not sensible, we had that at the very beginning as well. Because then I waste the stairwell to build up the highest wall height. The rooms should make full use of the center of the house. They can't anymore then.

- Basement: As said, it is living space. It is not a financial question. I want neither bedroom nor children in the basement. Under no circumstances.

OK, so it's more of a personal thing.

However, one gets the feeling that you are not quite clear on the difference between UG and basement. In my opinion, the stairwell wall argument also shows a lack of imagination. The staircase probably wouldn’t change at all. But it's not worth dwelling on.

I don't want a bedroom or children in the basement. No way.

As I said, a basement level is a completely normal floor, where usually half of it is embedded in the hill. Otherwise, the rooms don't differ from any others. In this case, the children's rooms would even have more space, since the sloping ceilings are gone. What do you think is the advantage of having the children in the attic compared to the basement? In the basement, it's much easier for teenagers to sneak out at night and there's also more space for the girlfriend's bed. And when you're old and frail and the kids have moved out, you just move down with the bedroom. :P

Alternatively, the parents' area can also be in the basement and the children under the roof?