First draft single-family house 160m2 - Please provide feedback

From the sofa arrangement perspective, I see no advantage in swapping the living room/kitchen, since the room depth is only 345 cm. The disadvantage is that the kitchen would no longer be by the terrace.

... where do you see the advantage of placing the parents' bedroom on the south side? An additional disadvantage is that, since the bathroom is also supposed to be on the south side, pipes in the kitchen would have to be routed downwards.

And, I would do the kitchen planning in parallel with the phase of "finding window positions" and possibly still adjusting wall lengths. The 345 cm room depth is critical... it is not really suitable for true islands, L-shapes actually leave too much free space in the middle, and above all, you work with your back to the room in the kitchen. At least something should be roughly sketched in the plans about how the kitchen layout is envisioned.

On the upper floor, a metal stud frame with mineral wool as sound insulation is planned. Not good? We want to discuss this aspect in the next conversation, as we prefer a masonry upper floor.

The exterior masonry consists of Poroton bricks + WDSV (polystyrene, which I am actually not a fan of) + plaster.

I suspect mere laziness behind both: connections to sloping roofs are easier to make with drywall, especially with lean-to walls. With insulation boards, KfW funding targets are easier to achieve than with engineering savvy. Therefore, it is currently fashionable to reduce the construction exterior wall to the thickness of a load-bearing wall also usable indoors and to double up insulation boards. Aside from the nonsense of a two-shell wall without an air gap, I almost find the mixture of health-friendly wall stone and chemical shell funny again.

If the kids have to be considerate with each other, that doesn’t hurt. The parents’ bedroom is a secure fortress, toward the children through the closets in the dressing room, and toward the bathroom again with closets. Snoring noises are low frequencies – trying to dampen them with walls like bass reflex boxes is the second joke after the exterior walls. Against impact sound, nothing is done with interior walls. I would probably use aerated concrete here.

Otherwise, the contractor seems to be doing quite mature planning work.

Location of the property and floor plan look almost like our plan. We also had the problem that having an office on the ground floor makes it too tight. Current solution: office on the upper floor, where we think large rooms are not as important as downstairs. That might not work for you since it's already tight upstairs with dressing room and storage room. Are the external dimensions fixed?

Location of the property and floor plan almost look like our plan. We also had the problem that the office on the ground floor becomes too cramped. Current solution: office on the upper floor, where we think large rooms are not as important as downstairs. This might not be possible for you since it’s already tight upstairs with dressing room and storage room. Are the external dimensions fixed?

We requested an increase in the floor area, but this is out of the question due to budget reasons.

Since I haven’t been in touch for a while, I would like to share and discuss our updated plans with you today.

The contract with the construction company has not been signed yet, but I think it will happen within the next two weeks.

We will not be swapping the rooms on the upper floor after all. Furthermore, we have straightened a few walls.

On the ground floor, we have now decided against a combination of guest and study room. For my wife, this separated part is sufficient as a study, and we rarely have overnight guests. We are very satisfied with the larger living/dining area. The sofa is incorrectly drawn and will be placed on the opposite wall.
In addition, we have adjusted the window configuration.

The kitchen seems a bit small to me, but the appointment with the kitchen designer is still pending.

I am looking forward to your opinions and suggestions.

Best regards

Also looks similar again to one of our many variants. And I therefore think that the staircase is drawn too short. Are you sure that this is a realistic stair dimension for a comfortably walkable staircase? Ours would be 3.63m on the long side and some have already said that it is too steep. But maybe you have more on the short side than we do.