Project Homeownership - Basement, Ground Floor Plan - Tips

Because you need the appropriate craftsmen with expertise, otherwise an apparent advantage can quickly turn into a disadvantage.

I am aware of that and I completely agree with you.
But if the company exists that does this professionally and positively for years, there should be nothing against it, right?
I just like the idea of having everything from the foundation slab to the roof from one integrated system and having a stable concrete core as a massive base.

However, this construction method is not common, and I would be interested in the reasons why.
Regarding the basement, the advantage of the Neopor house would be that everything here would be seamless.
No necessary transitions of different materials.

Best regards and good night

The building is to be solid, although we have not yet agreed on aerated concrete, Poroton, or Neopor concrete construction.

Formwork block (Neopor, Isorast & Co) or rather aerated concrete? - we have already had this here:

Regarding the basement, the advantage of the Neopor house would be that everything here would be "seamless."
No necessary transition between different materials.

Or precisely not? - Formwork block and concrete are also different materials. Even without water pressure, formwork block is not my favorite for basement construction.

"Seamless" construction exists elsewhere as well: the aerated concrete builders offer complete building systems, or there are also precast ceilings made of bricks...

Basement / lower ground floor and two full stories are not mutually exclusive.

We have the classic layout: entrance, wardrobe, building services, WC, kitchen, living, dining, garden access downstairs. Upstairs bathroom, sleeping, utility room, children’s room. Arifas arranged the rooms differently, also two full stories despite the slope. Friends of ours have it differently again. We only have a bit more slope.

Too much filling costs money, excavation costs too.

1. Are you allowed to build your desired house according to the development plan?
2. How steep is the slope within the building area? Regardless of whether with or without a basement, usually one wants to have the kitchen, dining, and possibly living room on the same level as the terrace.
3. How much would need to be excavated to build a basement? Does your desired house still fit within the allowed height then?
4. How much would need to be filled to build on a slab?
5. Offers
Filling, house on slab with larger footprint
Excavation, basement, house with smaller footprint.
6. Does your room program fit the smaller footprint?

The basement should actually not be a problem.

OK, so we have a corresponding company with years of experience in this topic. Also, there is an architect on board who has planned and built such houses several times. But we are drifting away. What do you say about the subject of basements? Have you heard about the square meter prices? EG, OG approx. 350€ per sqm Garage approx. ??? Basement approx. ??? I know it's hard to say, but most architects throw such numbers around to have a rough idea. Regards

My "rule of thumb" is that for every 20 cm of height difference, 10% of the basement price is incurred. If you build "no basement," but still foundation walls at basement height, you have practically built a basement backfilled with earth without interior walls and without basement windows. And that then costs just like a full basement without interior walls and without windows. Since these are both relatively minor items, basically the same. You might as well build the basement "officially" and have storage space. And you might need the latter after all: only a few people are discarders. Those who are collectors and have no basement will eventually have both cars in front of the double garage. Nevertheless, according to the logic of my aforementioned rule of thumb, I would not build a basement for a trivial hillside situation.

My conclusion is therefore: with a height difference (measured across the house depth) of less than 1m, clearly no; from 2m, clearly yes; and in between it is a question of honest self-assessment whether you are an eBay / flea market / discarder type – or rather someone who leaves clearing out to their heirs.