12x9.6m 2 full floors, basement, attic, 4 children's rooms

Hello again,

the Baukindergeld is supposed to come this year, and since we are still finalizing our planning and have the notary appointment for the property in about a week, we are waiting for now. It is 12,000 per child spread over 10 years. For us, with 4 children, that is therefore 48,000. We are allowed to earn 75,000 + 4x 15,000, so 135,000 per year. We are noticeably below that.

What I don't like about Katja's floor plan is the lack of natural light in the hallway of the upper floor and especially the dining room facing the front. The property is not on a main road, but especially in the mornings and evenings quite a few cars drive past from the residential area behind it.

In our design, there is natural light in the hallway both on the ground floor and the upper floor. Maybe that wasn't quite clear, but next to the stairs there are floor-to-ceiling windows both upstairs and downstairs (fixed at the bottom) through which the light would shine nicely into the hallway mainly in the afternoons and evenings.

I assumed the largest possible building plot, since there is also the corresponding space requirement, and with the property selection we were already very lucky anyway. There were only three plots of that size, everything else was smaller, and we are talking about a high triple-digit number of applicants.

Honestly, I am thinking about putting the stairs on the side in our floor plan like Katja's suggestion (basically swapping with the office), but then we have the problem again with the lack of light in the upper hallway. I’m also considering whether the dining room could simply be separated from the living area by a drywall partition that could be removed if we decide to move to the attic after all. But that would mean that 6 people would have to use the bathroom on the upper floor, and that surely wouldn’t be optimal. Another bathroom in the attic would, however, be even more expensive...

So, many ideas, no solution yet, but we are working on it

Thanks to everyone who is contributing good ideas!

Best regards
Johannes

Hello again,

Regarding the staircase to the attic from the side, I gave it some more thought. The following conditions apply. Maximum building height is 10m. With a minimum inclination angle of 42 degrees, the roof slopes down from the ridge to the exterior wall by 4.32m (half wall width (4.8 meters) x 0.9 (rise per meter at 42 degrees). This leaves an exterior top edge height of 10m - 4.32m = 5.68m.

The top edge of the finished floor must be 30cm above the reference value. 5.68m - 0.3m = 5.38m. A ceiling height of 2.5m per floor would be desirable. 5.38m - 2 x 2.5m = 0.38cm. So, there remain 38cm for the intermediate ceiling (only 30cm is drawn in - if the controlled residential ventilation ducts run in the ceiling, however, that is probably too little), which I believe we will need as well. Since the value given above (5.68m) is the top edge of the roof at the exterior edge, the upper floor may lose some height (as much as the thickness of the roof).

Approximately 2.8m height must be overcome over a 3m stair length (2.5m room height + ceiling thickness of the upper floor 0.3m). The roof above starts at 5.68m and then slopes over 3.5m (since the exterior wall is 50cm thick) to 5.68 + 3.5*0.9 high. This results in about 8.83m roof height (exterior value) above the stair exit minus the roof thickness. If I add this up, I get 0.3 (top of finished floor) + 2.5 + 0.38 (ceiling thickness ground floor/attic) + 2.5 + 0.3 (ceiling thickness attic/upper floor) = 5.98.

8.83m - 5.98m = 2.85m. From this, the ceiling thickness must still be subtracted.

Now the questions: How thick is such a ceiling usually? Is the remaining height sufficient to use the staircase upright?

Looking forward to your assessments.

Regards Johannes

So without verifying all your numbers now, such a ceiling is often around 30cm to 35cm including the floor structure. Ours is, for example, 32 cm, if I'm not mistaken.

Hello Katja, thank you very much. I expressed myself unclearly. I meant the thickness of the roof, not the ceiling.

We have 40 or 45 cm of insulation between the rafters.

Good morning,

I have rearranged the stairwell and at the same time adjusted the bathroom and the study (for now only on the ground floor). What do you think?

Regards
Johannes