Floor plan single-family house 150 m² 448 m² 1.5 stories

or do you have an absolute reference height that this would collide with?

Yes, the houses on the left and right have about 9m ridge height and 4.50m eave height, so we have to roughly adhere to that. Really annoying.
So: If we raise the basement out of the ground (at least one meter would be needed because of the windows), the knee wall would be reduced by the same height. Then there would still be 30cm left. Would that be a better solution?

Basically, sending homeowners with three children to sleep or work in the basement. The typical standard floor plan ;-) is designed for one or two children and nowhere too large, to adjust the children's room area by rearranging. Consequently, instead of starting from the budget-fitting model, you take a smaller one which is then extended in ridge direction. Here the provider probably preferred the path of a typical "sales planning" :-(

I have to admit, at the time of planning we hadn’t really mentioned the third child yet. We wanted to give the children equally sized rooms upstairs, so for us, the bedroom was turned into another children's room. But we didn’t have the floor plan adjusted.
What do you mean by "instead of starting from the budget-fitting model"? Would a larger model actually be cheaper? And: You’re right, the house was actually extended. Amazing that you figured that out.

Fearful homeowner questions

You really are THE neologist here in the forum. What kind of questions are these "fearful homeowner questions"?

Heinz von Heiden will offer you a non-accessible cold roof

Very true, according to the construction service description it is cold and not accessible. I think the costs for a warm attic are likely to be considerable. I would rather invest the money in a light well (Heinz von Heiden does not do this or does it very reluctantly due to flooding risk, water drainage, drainage required, etc.)

Very true, according to the construction performance specification it is cold and not walkable. I think the costs for a warm attic would be substantial. I would rather invest the money in a light well (Heinz von Heiden does not do this or does it extremely reluctantly due to the risk of flooding, water drainage, drainage necessary, etc.)

Oh, then I now understand what the basement has to do with the height.
My parents' house has 2 basement rooms with a total of 3 light wells and the basement is great living space.

I would rather put the money into a light well

Or something like that. But for a light well, you don't need to raise the basement. What about heating in the basement? How do you want to realize that?

I didn't look at the windows: at the top I would take some with a parapet, about 2 meters wide. A room gains more light from width than from vertical slits.

Good tip, thanks!

And yes: opposite the doors, double casement windows would be quite good.

There are 2 roof windows per children's room. But that was only for a considerable extra charge and not standard.

I would do without the 140 cm shower and give the toilet more space. (The shower should be separated at these sizes.)

So only 90 cm? Shower separated, what do you mean by that? Separated from what?

You could take some space from the wardrobe here

Where? If you leave out the shower on the ground floor?

And unfortunately a cozy kitchen for 5 people stands out quite negatively.
You probably get MORE kitchen if you swap living room and kitchen. The living room can do without a door if desired, the kitchen could be an L-shape, possibly a U with island… definitely draw a realistic dining area.

Swapping living room and kitchen wouldn’t be so good, the living room is supposed to face south with a view of the garden.
Do you mean the kitchen is too small? The kitchen isn’t correctly drawn yet, it will look like in the attachment, view from the living room.
I will measure a bit in our current apartment and have a look.

: I will remember the tips about observing and measuring the rooms more precisely. However, I’m not so keen on drawing and using graph paper ;-)

What about heating in the basement? How do you want to realize that?

Underfloor heating is already installed, it was included in the signed building specification because of the KfW55EE standard and the open staircase

That is not a franchiser

Oh. Then they must be putting together very different teams – otherwise I can't explain the mixed customer reviews.

What do you mean by "instead of starting from the budget-appropriate model"? Would a larger model be cheaper? And: You’re right, the house was actually extended. Amazing that you figured that out.

Oh no, you praise me without reason – I hadn’t figured that out (though I also didn’t specifically check). No, a larger model would not be cheaper, and I am actually advising the opposite: namely to look for a smaller one, to which you can basically "add on" linearly or whose "wheelbase" you can "extend."

You really are THE coinage creator here in the forum. What kind of questions are these "anxious builder questions"?

It is the typical accumulation and mixture of individual questions characteristic for this type of builder, which they try to check off before going hunting for a provider. In your case, these were the threads: 41587 on controlled residential ventilation, 41588 on interior doors, 41622 on carport greening, 41674 on shower water heat recovery, 41675 on air-water heat pump, 41713 on ventilation outlets, 41766 on spray distance of shower water, 41789 on construction contract amendment requests, 41791 on basement stairs, and 41811 on shower tray surfaces. But on a construction site, you really need a helmet more than a doctorate hat, and after so much preparation, I would have expected you to end up with the most handpicked builder of all time ;-)

I didn’t look at the windows: at the top I would take ones with a parapet, specifically 2 meters wide. Width lets a room gain more light than vertical slits.

I only see one and a half meters possible there, if the four gable windows are to remain the same size relative to each other, all with roller shutter boxes and the parking space for the cupboard is not to be "damaged." Otherwise, I agree.