Single-family house on a slope, floor plan: timber frame construction and precast concrete basement

One child then gets 20sqm, the other 13. Somehow unfairly divided. I am not really an advocate of exactly equally sized children's rooms, but a 7sqm difference is quite significant! The staircase can hardly be changed now without altering the exterior views. This would change the entire room layout. Changing the direction of travel doesn't help either, especially with a basement.

[A child then gets 20sqm, the other 13. Somehow unfairly divided. I'm not a proponent of exactly equally sized children's rooms, but a 7sqm difference is quite significant! The staircase can hardly be changed now without altering the exterior views. This would change the entire room layout. Changing the walking direction doesn't help with the basement, of course.] Yes, that's correct, but it simply can't be changed down there. Unless we enlarge the basement, which we don't need. We've tried a lot with the stairs, but due to our requirements, it couldn't be solved differently: we want the kitchen, dining, and living area as they are because of the orientation of the plot and thus the building. Another alternative would have been a bay window in front of the guest room, but that would have greatly increased the costs, so we decided against it.

The different size also results from the consideration that we might want to make a separate apartment out of it later if we no longer need the space.

Hello,

I won't say anything about your draft now - I usually don't have the right eye for something like that.

Orientation: Southwest
Preferred heating technology: air-to-water heat pump with solar collectors
4900[/ATTACH]

One point in the drawing did catch my attention.
You want to - preferably - install an air-to-water heat pump with solar. So why is a chimney being built?
Or is it just a quirk of the architect that he included a flue in the drawing? Maybe I'm not familiar enough with the system and a flue is absolutely necessary.

The reason why I’m mentioning this is as follows:
Regarding solar, various experts have told me several times during our planning that even the smallest shading (just a few cm²) on the module strongly negatively affects the entire performance of the module - if I remember correctly, the performance loss is around 80%.
Your chimney/flue could cause such shading. To avoid this, you might want to relocate the flue to the other side of the roof.

Thank you for the tip, I had not considered that yet. The chimney is not intended for the air-water heat pump, but for the fireplace. We did not want an interior fireplace because it takes up space and we will probably only install it later anyway. Basically, the stove in the house is just a coziness factor and therefore it has a low priority; other things will be invested in first. We just wanted it to be included in the building permit so that we don't have to apply for an additional permit later.

We have now slightly revised our floor plan:

[*]Pantry slightly enlarged
[*]Guest toilet reduced in size and small wardrobe inserted
[*]Small retaining wall inserted between kitchen and living area, as the kitchen will be 3.42m wide
[*]In the upper floor bathroom, we slightly reduced the shower, placed the toilet behind it, and inserted a corner bathtub. Behind it is a 60cm high shelf as a pre-wall with laundry chute
[*]The utility room in the basement was enlarged, and therefore one room was reduced in size

I created the floor plans myself; our architect's versions are not finished yet

If the 2m line remains from the first draft, which I suspect due to the roof data and eaves height, then in the upper floor with the WC you are now below this 2m line in the ceiling height area of 150 to 200 cm. In the first draft you had the headroom for the WC from the double casement window above the WC. That is why the double casement window was there. Now you have headaches when you get up from the WC

The stub wall on the ground floor by the kitchen does not enlarge the kitchen.

And, if the real idea is to give the basement rooms to the children later, then I would already want to see that the rooms are roughly the same size. And also design the bathroom there a bit differently, because 195 cm raw width for a reasonable shower and WC next to it is not so great. Also with regard to a separable apartment, where I would also simulate the separability at some point.