Draft single-family house with 3 children's rooms, basement, and boundary construction

I also drew something again in PowerPoint because the drainage bothers me in your floor plan. In my opinion, it has to be somewhere in the south for it to make sense.

Is the drainage such a big (technical, acoustic, cost-related?) problem? I looked at the plans of a friend’s realized house. Downpipes run in the wall of the large living-dining area and then the red ones go across under the house towards the sewer...

I don’t know how you calculate, mine is a bit tighter. I’m missing 10 cm. An "aircraft carrier" (long island) looks okay at 90.

I said that the 90 cm is measured to the window (not the wall). I had planned the island at 1 m now. Still too narrow, the aircraft carrier?

The 350cm reach up to the window, the row on the right side of the plan is then 5m long?

Gave the kitchen some measurements. And on your advice, I reduced the two passageways to the living area from 1.3m to 1.2m each and widened the kitchen by the gained 20cm.