Create submission plan for a 140m² single-family house - feedback, tips?

The long hose, until you have made it from the entrance to the kitchen, is extremely impractical and a guaranteed source of frustration. The small WC is far too small and the shower does not work. The HAR on the side facing away from the street can lead to problems with the suppliers.

We want to use the office as a cloakroom until it becomes a bedroom at retirement age.

But only a double bed will fit in there, one less wardrobe.

We also want to store some things in the attic above the upper floor

You don’t feel like opening the attic hatch for every jacket, tool, or decorative item. A housewife and a handy man will easily enter the utility or storage room several times a day during an active hour. It is also not an alternative to constantly carry seasonal or sports equipment up and down one flight of stairs or to continuously pack boxes and crawl around the attic. Moreover, the roof should then be the more expensive warm roof variant, although a cold roof would be more suitable.

The shower should fit with 2.60m room height and a flat shower tray

Oh, do you have 3.20m ceiling height???? I can’t imagine that at all, because then larger rooms would be planned. This shower can only be an emergency solution; it is certainly not age-appropriate.

Do you still see the draft rather negatively?

Absolutely.

Since I have been planning it for so long, I probably already see my draft with blinders on...

Unfortunately, I don’t see much invested time, nor much knowledge and understanding of space and size.

Office too small for later, shower bathroom too narrow, shower doesn’t work, not age-appropriate at all. Where should the wardrobe go later?
The office will become a messy room if the children throw their shoes in there.

The pantry is unnecessary, no yellow sack fits in there either.
The path to the kitchen is unnecessarily long.
Storage room unnecessarily large, appendage costly and unnecessary with good planning.
Hallway is very narrow – will become a bottleneck.
Path to the terrace always through the TV/sofa area… why not have the kitchen by the terrace?

Upstairs you have to take the sloping ceilings into account: a lot of wardrobe space is lost in height.
With different wake-up times, the person resting is disturbed by the one getting up, several times by light.
No wardrobe space behind any door – thus the wardrobe in a room must always stand freely.
A washbasin belongs in the WC, because you wash your hands before touching the door handle. Therefore, the room is too small.

I think these are some starting points to reconsider.
I would let an architect or planner take care of it – someone who knows what they’re doing.

Regards Yvonne

I also find the long way to the kitchen very inconvenient; it will surely quickly become a nuisance with heavy shopping baskets.

And please also consider that doors usually open into the room and not into the hallway...

Oh dear, you're getting quite a thorough beating. Some of the criticism can only be understood considering that Lower Austrian building culture is unknown in Piefkeland and thus some things in the design here are perceived as awkward. Other parts of it truly are.

Having the living room door open into the hallway is accordingly perceived as strange; in this specific case, in combination with the staircase, it is actually not a clever solution.

The pantry has become unusual here, and especially in this forum it is predominantly interpreted as a household clutter room (which, of course, would need to be larger), hence the sentence about the "yellow bag." This (sometimes also called the green bin) is a recyclable container of the "Dual System Germany," a somewhat harshly put "yogurt cup collection system."

For this, you buy yellow bags in Piefkeland at tobacconists (which have a different name there). As for your garbage bins: I would put them in the generously sized carport, for example, in the corner where the storage room door now swings open.

Regarding the shower, I am quite sure it won’t work that way; draw it to yourself in a cross-section. Give the house half a meter more width (this will surely work with the carport) and about a full meter more in depth. At the top of the section, you will find a pinned post "Floor Plan Planning" that contains a drawing with minimum staircase dimensions. Yours does not seem to hold up to a recalculation.

This also applies to the head heights where the staircase goes to the attic, above the bathtub, and where the beds are. The knee wall / dormer seems to be about 1.20 m according to your elevation drawing and could be higher (even if then it might be less typical for the landscape) – try it with 1.50 m.

And, I have to agree: about 70 cm behind each door swing would allow you to place a wardrobe. You probably just forgot to include the washbasin in the upstairs WC in the drawing.

I must also give you praise: the window formats are pleasantly calm; otherwise, in many plans, out of thirteen windows, you read nine different ones. You should still reconsider the positions: does it swing over the faucet in the kitchen?

Also, the one above the corner bench at the dining table does not seem ideal to me. Executing it as a horizontal slit in the modern local style, however, does not fit the type of Lower Austrian settlement house. I suspect the parapet height is 85 cm. From the upper edge of the finished floor, that is probably a suitable value. What is permissible there may differ in Austria compared to Germany.

Now don’t be so dismissive
What doesn’t work in a Germania house won’t work in a house far away either.
You don’t get culture shocks in gable roof houses, nor do you have to deal with strange living conditions there.

Regards, Yvonne

What doesn't work in a Germania house won't work in a house far away either.

Well, the original poster has already faced quite strong opposition. Using the example of the door to the living room: around here it would quite naturally open into the room, since it is large enough and after all not a side room. But it has neither a corner on the left nor on the right of the door where it could "lean" open. Therefore, one might find it cozier to open it into the hallway here. In every cultural area a different basic attitude dominates; Lower Austria is somewhat "Bohemian" inclined. Down-to-earth, not stylish.