Avoid mistakes in the second house: Home construction company or architect?

And apart from that, the benefit of additional square meters is not linear.

Furthermore: the measure "square meter" itself is not linear, 1.00 over-square meters cannot compensate 1.00 under-square meters elsewhere. And Zeichenknecht square meters are not architect square meters. The phenomenon of square meters is quite a peculiar little creature. Now I wish the OP insightful dreams about the question of whether this might also apply analogously to panoramic windows.

Thanks for the floor plan. Yes, exactly, I think you can really get more out of it that way. You don't have to "waste" the width over the entire length when you want the width, for example, for the kitchen but not for the living area, or vice versa. Unfortunately, I can't manage to attach our floor plan here right now... But our open space is a rectangle with a net area of 5.50 x 10m. And everything is fully furnished. I would be happy to have one square meter of "air" where no piece of furniture stands, just nothing or maybe only a rug lies.

By the way, regarding the garage in the west, it has turned out that it does not cause us any problems with the "sun exposure" (better word?) of the terrace. It is very hot there in the summer and quite sunny from around 2 p.m. Light also enters the living area through the west-facing kitchen window and the glazing of the front door (also on the west side). Next time, I would take the advice to make more use of the building plot and build it somewhat more elongated. Thanks for this tip, @ WilderSueden.

Is this already the "Stockholm Syndrome," that you "like" having a loft-style open-plan room instead of a bedroom – would you even like to have a clothesline stretched diagonally through as a room divider?

You think the Stockholm Syndrome describes my behavior of coming to terms with a poorly planned master bedroom or talking myself into liking it? Hmm, I'm wondering whether I would really save square meters if I turned our bedroom—which consists of only one large (multi-functional) room whose functions can be repeatedly adapted to the new everyday life (including with children)—into several different rooms. I rather believe that you would then have more traffic area, more walls, more doors, more awkwardness. Please correct me if I am wrong. But that is behind our preference for having large multi-functional rooms rather than lots of wall space in smaller rooms.

What does the upper floor look like for this floor plan, or is it a catalog house or yours? I actually find the ground floor quite suitable for us.

... this was a floor plan that I once created here as a "sketch" for a house situation. Overall, just under 150 sqm but only for 2 children. With the ground floor plan, my intention was more to show how smaller rooms for cooking/eating/living can also be divided. If you really become 6 people, for example, the sofa will be somewhat small and you will need to enlarge the sofa/TV area.

But for completeness, here is also the upper floor (just click on it, then it will get bigger)


What you can see here is that quite a lot of storage space is created in the upper floor hallway as well. Washing machine etc. right in front of the bathroom.
In the ground floor hallway (I’m attaching this here again as well), for example, there is a bit too little storage space for 6 people.


Overall, this is not a good sample floor plan for you, but at most an idea giver, also aiming more towards a rectangular than a square basic shape. Because simply enlarging it is not that easy.

And, what one must not forget, fundamentally a house design always depends on the available plot of land.

Nevertheless, you could now, to get a better feel for rooms in floor plan views, lay out your most important furniture etc., in other words everything you want to accommodate, to scale as "paper cutouts." Then you can print out sample floor plans to this scale and move your furniture around to get more of a feel for sizes. Certain furniture situations can then also be rebuilt in your own house, if necessary with boxes, to achieve a live feeling for distances etc. As good preparation for a new planning using a room checklist.