Open roof truss or ceiling?

and how are the ceilings supposed to go on the children's rooms and the bathroom??? I just can't imagine right now how that is supposed to be implemented.

What exactly do you mean by that? :) The walls will just be built higher accordingly.

Sorry for the link, the link can be deleted if you like, it's just a Pinterest picture.

Don't tell us that, tell the admin.

Of course, we have not just one room upstairs, but 2 children's rooms, an office, a children's bathroom, and a master bedroom/dressing room/bathroom.

If we had an open design upstairs, we would probably have a room height of 3.5-4m in the middle. We don't have to utilize the 9m and thus probably 5m at the top.

That entirely depends on how wide the house will be. And how the rooms relate to the hallway, whether you have only one roof surface or rather a narrow gable. It can all look good, but if the room layout doesn't fit, it can quickly become bad. Otherwise, I am pro open - wonderful sense of space. Our living room is open to the top, and the roof pitch is almost too steep.

The house measures approximately 18x11.5m on the ground floor with two bay windows that become roof terraces upstairs. So, upstairs regarding the roof, it's 10x10m.

I'll attach a picture so you can better visualize it. Everything is still in the draft planning stage, no worries. :)

We are also leaning more towards an open attic.
It will be a normal roof without gables, but with a slight overhang at the staircase.

Which way does the roof go?

How does the roof go?

West to East. North is at the top of the sketch.

To me, that would look way too much like a cobbled-together attic apartment with all the many rooms. You won’t really see the roof structure anywhere, only beam sections and slopes – which will create a boxy feeling in the smaller rooms.