Provider selection prefab house: Bien-Zenker, Haas, Streif? Tips & Tricks?

I think it's time for you to roughly involve us in your thoughts with a sketch.

So, please don’t laugh yourselves to death over the quality of the sketch, it’s just supposed to convey the idea—we are looking at the upper floor. The attic (one level above) we also want to design similarly, just with sloping ceilings and a smaller bathroom (shower only). The staircase will of course look different, but I’ve been using the software for only 30 minutes!

Motivation in the floor plan:
Either the children move into the attic and have peace from us, or—and we will see then—we put the bedroom and study into the attic. Of course, we will have some difficulty with partition walls in the attic due to the sloping ceilings; it will probably come down to built-in wardrobes. For this reason, on the north side of the upper floor there are no windows in the rooms; the stairwell will get either two small or one elongated window. Guests should stay in the finished basement with "real" daylight; it is a slight slope location.

So, how bad do you think it is? ;)
What can be improved?


(North is at the top)

I don't see 13 x 6, how come?

I don't see 13 x 6, how come?

It is very possible that the layout of the rooms and the size of the staircase don't work, it is only schematic and is meant to illustrate: 2 rooms as equal in size as possible, staircase and bathroom in the middle. The external dimensions are approximately correct according to the software. Does this answer the question?

Fill out Yvonne's questionnaire , and remove the restriction to timber frame panel general contractors. A 2D planning tool that I have appreciated for four decades is, by the way, "paper and pencil". Two equally sized children's rooms are something for identical twins. At least starting with the upper floor is already a step in the right direction.

Overall, we know pretty well what we want, or rather the plot and development plan leave little room for manoeuvre. Therefore, the offers are also relatively comparable from an external perspective,

And what would that be? I have not yet read a wish list or seen plans. Which AGs are available?