Floor plan 2 floors and hip roof

I know that you have a strong aversion to such house types *g*, but we actually find it stylish. A design with "15-18m" width is then quite a different league of house, both in terms of living comfort and financially.

No, I have nothing against town villas - only that - as you yourself have already recognized - compressing a stately facade to 11 or 10 m "width" unfortunately turns it into a pseudo-villa.

As far as taste is concerned, [...] Personally, I just don't like the smooth, square concrete fronts.

It has nothing to do with taste (but rather with proportion) that the "side parts" next to a central risalit, if there is a lack of total width, inevitably have to "shrink" into extreme vertical formats.

I am more interested in functionality - ...

all the more reason the staircase should be clarified before further planning ...

... - and yes, a flat front wall does have advantages.

... and no, a straight wall alignment (as a dictum) could also be a corset that stands in the way.

What are the large basement rooms intended for?

Where should the terrace primarily be oriented? What about garden furniture? In the large basement rooms? Have you ever thought about an outdoor basement staircase?

The planned roof area where the terrace might be located should serve what purpose with a depth of 120 cm?

I would put the washing machine / dryer etc. on the sleeping floor; why carry the laundry down and then back up again? Then you could possibly combine the utility room/workroom area and make it large enough so that guests can spend the night there and teenage children don’t have to move out of their rooms soon. Having visitors would also be more relaxed.

Why does the dressing room (only for the parents?) get the south side?

What room height do you wish for? Because the staircase is more than just narrow, it’s very narrow ... see also staircase examples at ... and it also goes directly up next to the front door.

Overall, the house has a lot of hallway space, but it has no additional use.

What are the large basement rooms intended for?

No. 1 as storage space for all sorts of things and flea market stuff.
No. 2 essentially as a pantry, drinks, freezer.

Which direction should the terrace mainly face? What about garden furniture? In the large basement rooms? Have you thought about an exterior basement stairway?

Terrace naturally facing west. We have considered the exterior stairway. But just in terms of cost, a garden shed is cheaper and also more convenient than carrying stuff up and down the stairs.

What purpose should the planned roof area where the terrace might go, with a depth of 120 cm, serve?

At first we planned a balcony, but discarded that again. It should prevent heavy driving rain against the large glass fronts as well as allow for partial roofing, for example so one can still barbecue in the rain. We have this effect now with a balcony and do not want to miss it. Why so small: so it does not cause unnecessary darkening in the living area. Incidentally, it also loosens up the strict facade.

I would put washing machine / dryer etc. on the sleeping floor, why carry the laundry downstairs and then back up again? Then you could perhaps combine the utility room/work room space and make it large enough so guests could actually spend the night there and teenagers wouldn’t soon have to clear their rooms. Makes having visitors more relaxed too

As said, washing machine upstairs is an alternative planned, they are drawn downstairs so the space is not "planned away".

Using the study as a guest room is out of the question for various reasons, and I would lose the second exit then. But obviously it has already been noticed that the planning was flawed here. In each of the four drafts it was placed differently.

Why does the dressing room (only for the parents?) get the south side?

Because the room, apart from internal dimensions, does not have to fulfill any needs and there was no more space at the bedroom. We can easily live with the corridor through the hallway.

What ceiling height do you want? Because the stairs are more than just tight, but very tight... see also staircase examples in

... and they also go directly up next to the front door.

Standard room height without special requests. The stairs should consider all calculations in their dimensions, from tread width to step measurement rules. It is not entirely clear to me where they become too tight in this form. More space between the door and the stairs would simply be "nicer". The rotation of the directions of travel is already an alternative in the drawer, but it does not change the space requirements since the way into the basement is also open.

A study as a guest room is out of the question for various reasons,

Name one or two .. it just makes it easier to follow your thoughts

Regarding the stairs, if you look at my sketches for "normal room height," then your stairs are simply too short. Your stairs are drawn with a rise less than my sample stairs.

Basement only for flea market goods (hobby?) and other things? No garden furniture etc.? Personally, I consider that somewhat oversized. What happens in the room marked as workshop?
In general, I would rather increase the house area a bit, which also means less stair climbing ... especially if you still want to provide a garden shed somewhere. Although your property really offers enough space for that.

Overall, your answers sound a bit defensive rather than objective. Just out of interest .. what do V1 to V3 look like?

I’m posting two old versions; the other files have already been deleted.

Of course, garden furniture should also overwinter in the basement or similar, but not for daily use. So I don’t want a (dirty) lawn mower in the basement. Overall, the basement is almost arbitrary, I can live with almost everything there. Yes, it tends to be too big, but a partial basement doesn’t bring me any advantages? However, the basement should not be my problem.

Regarding the stairs, I still need to take another look at the building description at some point. The dimensions are exactly as suggested by a large stair manufacturer as a comfortable sample stair. 2.00x2.26m, running width 100cm, 15 risers, 18cm rise, 27cm tread. Gives a step measure of 63cm and 2.70m height.

Of course, a lot of work went into it and I can understand that one tends to defend things here and there. I have to maintain more self-discipline; I don’t consider it a defense, nor am I seeking confirmation here.

Maybe it’s also because the discussion is somewhat missing the problems I raised. 11ant is completely right when he says that the outer shell forces us into a corset that forces our compromises. That would mean going back to the beginning and planning the house (with an architect) completely anew. I’m actually considering that, but I also hope that maybe one or two clever ideas will still come up that can improve what exists. For example, suggestions regarding furnishing or a creative idea for the stairs. Deleting is quick to do; I would like to delay that for a few more posts.

.. I can understand that.

But your stairs clearly have defects .. in all versions.

270 cm height means a maximum clear room height of 240 cm.

The stairs in the example I showed are designed for floor heights of 285 cm = clear room height approx. 254 cm.

240 cm clear room height is, for example, together with roller shutter boxes above the windows not a nice dimension, since the windows end at a maximum upper limit of 210 cm (frame, window area approx. 198 cm). You see that in houses from the 70s and it feels oppressive.

Cellar for storing outdoor materials, then you should always consider how to get them down there.

And, why this large workshop room now? And what can you imagine storing in the cellar? There would also be the option of creating storage space in the roof under a hipped roof and omitting the cellar entirely, and instead designing the house footprint a bit more generously. Which, for example, might result in a nice half-landing staircase.

And, why couldn't there be a larger combined guest/work room? What speaks against it?

Good tips can only be given if motivations and reasons are known.

EDIT:
By the way, you tend to give your children only the north or at most west, and instead place parents or dressing room towards the south.