Floor plan & house positioning Single-family house on a "curved floor plan"

Say, the model that is supposed to be homeopathically related to this design can actually only be similar in exterior dimensions or layout.

The company starts with a blank sheet of paper and none of the example floor plans are even close to ours.
Attached again is an imprecise drawing of what the company's original design was (bay window and cross gable included, I didn’t quickly draw those).

On the ground floor:
However, the living room was too narrow and the WC window next to the entrance has already been discussed here frequently, we are also against it. Therefore, WC to the north = more space for the living room.

Furthermore, the front door can shift somewhat more centered under the bay window/house.

The front door should preferably open to the left, therefore office and hallway swapped. WC then placed next to the kitchen due to connections (also no possibility for a window next to it because of the utility room).

On the upper floor:

We simply swapped bedroom/dressing & bathroom/utility room 2, because we prefer to sleep in the northeast rather than in the southeast.

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Our original idea was the staircase in the south (see attachment). We like it very much upstairs, but downstairs it ruins the south side and the office steals the evening sun. And unfortunately, it creates long corridors. See pictures.

The rooms do not need to be bigger, the ducts have to go. Different stair position, different hallway, not right through the middle. Everything reshuffled. Office, WC, cloakroom no ducts, kitchen closer to dining or terrace. Upstairs you can swap bathroom and bedroom.

We have the slants in our second apartment - should be similar to yours - I've hit my head so many times in the bedroom and in the bathroom the toilet bowl is mounted a bit lower,

Kitchen completely separated from dining and living is suboptimal with children. You can't be in two places at once. Cooking and eating together and you can combine housework with helping with homework or supervising play. Large sliding door to living room and you can connect and separate the rooms as needed. The all-in-one room trend has its reason. Kitchen to the terrace is not only useful for a quick breakfast in the garden, it greatly reduces the sand dunes to the candy cupboard, coffee machine and drink station. Children, if you let them, live outside. In open winters like these, the outdoor season is never over.

The original floor plans are not impressive either.

Why do you want to position the house like that on the plot? I would have spontaneously built it along the northern boundary so that the terrace and long side of the house would face south.

Proposed solution without massively enlarging the house (due to budget and floor area ratio) ??

a plan. Throw away your floor plan. A floor plan is not the same as a house plan.
If you have already discarded so much yourself and this is what comes out, then you should leave it alone. The problem now will also be that you have already thought in too many templates. Your approaches will certainly always have a mistake, so nothing good will come of it.
You are overestimating yourselves, I think. Surely you have better skills

The rooms don’t have to be bigger, the hoses have to go. Different staircase position, different hallway, not through the middle. Everything reshuffled. Office, WC, cloakroom no hoses, kitchen closer to dining or terrace. Upstairs you can swap bathroom and bedroom.

Where to put the staircase? In the middle of the house? Your idea was into the corner, you didn’t respond to the triangular landing. Or how do you fit a staircase into the corner? And as said, only one skylight in the bedroom? The hallway has to be in the middle if the main entrance is in the middle. Main entrance from the north? That was also an idea, then you gain a west room, but with the utility room in the north, the kitchen loses a window side.

Everything reshuffled -> without changing the sensible placements of the cardinal directions? THAT is exactly our problem. That’s why we're participating here. We see ourselves that the hoses are unfortunate. That has to change, but we don’t know how!

Upper floor: bathroom and bedroom are now as desired. We swapped them according to the house company drawing.

We have the slants in our second apartment – should be similar to yours – I have hit my head so often in the bedroom and the toilet bowl hangs a bit lower in the bathroom,

I’m sorry for you and your head As said, no problems here for 6 years.

Kitchen completely separated from dining and living is suboptimal with children. You cannot split yourself. Cooking and eating together and you can combine housework with homework supervision or watching the kids. Large sliding door to living and you can connect and separate the rooms as needed. The open-plan trend has its reason.

With children: That’s definitely a thought we have. But open kitchen, although not desired, only for the 4-5 years when you have toddlers?

Trends? Are a matter of taste ... city villas? Anthracite window frames? Concrete-look tiles? Black floor tiles in the bathroom? Open tiled shower? Handleless black kitchens? All white walls? ... I could go on forever ... all trends, but none for us.

I am not saying the open-plan trend has no reasons. Only for us, there are other priorities.

Kitchen to the terrace is not only good for quick breakfast in the garden, it enormously reduces the sand dunes to the candy cupboard, coffee machine and drink station. Children, if you let them, live outside. In open winters, like these, the outdoor season never ends.

Quick garden breakfasts we don’t really have. The point about dirt is justified! Speaks again for a terrace door at the kitchen.

You could place the terrace entirely in the east. But again, the much-discussed topic where the “optimal terrace” is. Ideally once around the whole house, depending on season and weather/temperature. What do you think? Terrace only in the east and thus better connected to dining/kitchen or east-south terrace for more flexible reaction to sun/temperatures?

I thank you again at this point for your contributions It is generally only helpful if you have alternative proposals. A (I exaggerate) “put all rooms in the south” just doesn’t work … so for example, staircase is stupid there: where then? Do you think another staircase shape (that would break our hearts) brings the ultimate solution? ....

Why do you want to position the house like that on the property? I would have spontaneously built it along the northern border so that the terrace and long side of the house would face south.

As mentioned: mainly privacy. With the house at the front by the street and some clever greenery in the southwest, our garden won’t be easily overlooked by anyone! With the house in the north, we only have a south garden. With an east-south garden, we hope to have a nice spot for different temperatures and sun conditions.