Floor plan planning single-family house 180m2 south access - chaotic floor plans

He would integrate the downpipes into the wall in the living room,

That is not allowed. He will place them in front of the wall. He has also drawn it that way… it collides with the beam in his plan.

The architect is very convinced of his design and said that it makes sense for the children's rooms to be located in the west (top of the plan), so they don't get the full sun in summer and don't overheat.

But then they will hardly get any sun from east to west. Are you not planning to use any sun protection at all?

That is not allowed. He will put them up against the wall. He also drew it that way... it collides with the beam for him.

I see it the same way. The outer wall supports the house and insulates it from the outside. A waste pipe from the toilet is not a small cable that you can quickly cover up. Integrating it into the wall would destabilize it and cause a thermal bridge. Does he want to ignore that? I also don't know if the pipe can be made quiet enough so that it is no longer heard. I am very sensitive to noise and would be skeptical. But maybe there is another solution that the architect can explain to us.

The 2.75m is unfortunately not enough information for the staircase. We need the floor-to-floor height. That is the height the staircase has to overcome. So from floor to floor. Did you specify the 2.75?

Now we at least know why the staircase is 4.5 m long.

I don't know either if you can make the pipe so quiet that you can't hear it anymore. I am very sensitive to noise and would be skeptical.

I can say something about that. Due to the renovation of the old building of the apartment house I live in, the toilet waste pipe from the two upper apartments runs through my bedroom. It is very well insulated and I don't hear anything at all. During the construction phase of my apartment, the upper apartments were already occupied and my landlord, together with me, tested the flushing from above several times during the insulation work before the pipe was completely enclosed. There is some kind of insulation wool and then drywall all around, and the ceiling connection is also well protected.

I also don't know if you can make the pipe so quiet that you can't hear it anymore.

Nice that Kerstin confirms it: I don't know anyone who complains about noises there, I had a house myself with a bathroom above the dining area and an open kitchen with the drain – you rarely heard it gurgle. So what! For construction reasons, I would avoid having wet areas come into contact with living spaces. If water damage occurs (which nowadays probably happens even more often than back then in new buildings), then water damage that also damages the living space – nobody wants that. Well, and the collision with the beam will result in relocating the drain. Where it currently is affects windows and aesthetics. If at all, I would place it at a corner near the exterior wall, but where it doesn't stand out. I don't see that with this corner. Unless it is planned to put lots of knick-knacks and wood (shelves) on the wall (American style).