Is it possible to found a single-family house without concrete and earthworks?

How are the mobile homes from Schwörerhaus, for example, established?

Flyingspaces cannot be built everywhere.

There are designated plots for mobile homes, mostly on leasehold and very close to nature. There, you can certainly also build a weekend house made of wood without a concrete slab.

Common sense forbids me to entertain the thought of simply building a house according to the Energy Saving Ordinance, i.e. a residential house 24/7, on sand or ...[emoji23] old waste/hazardous waste-> tires.

It would be nice if it doesn't become mixed construction waste at EOL

The topic of demolition and construction waste recycling certainly still has some potential.

- Would love not to seal the surfaces.

Oh, but I wouldn't be keen on uncontrolled infiltration under my place.

simply compact foam glass gravel into a flat surface,

But that’s not supposed to be eco-friendly, right?
I question both the energy expenditure for production and the chemical stability of the end product regarding no pollutant release into water.

I suppose the ground is sufficiently stiff with the 45 cm high beams,

Bending or torsional stiffness, yes, but what about load transfer?

Ecologically correct would be not to build new at all, but to acquire an existing property.

I also consider it most ecological to buy an existing property of appropriate size.

I assume it may still take ten years before this trend catches on, but that then alongside basement or slab one will equally consider planning on an existing basement. Especially with prefabricated houses from before 1970, I could imagine that one might consider a deconstruction down to finished floor level.

I assume that it may still take ten years for this trend to emerge, but that alongside basements or floor slabs, planning on an existing basement will be considered on an equal footing. Especially with prefabricated houses built before 1970, I could imagine that one might think about a dismantling down to the OKKD.

It is actually not that uncommon here to build on the OKKD.

It is not so rare here at all that it is built on OKKD.

What motives prevail there: rather the desire for a radically different layout, or building toxins in the dismantled part?

Old houses, really old ones, like ours. From a certain point on, demolition and new construction is more cost-effective than renovation. Town center. Demolition including basement, boundary distances must be observed. If the basement remains, the old house height (1.5 or 2 stories), roof shape, and orientation stay the same, then you may build independently of the distances at the old location. Since the town centers here are characterized by vacancy, someone has now managed to get approval for a modern Bauhaus-style house on the old basement. Regardless of that, why demolish a basement and rebuild when the old basement still has good substance. Our municipality has not developed a new construction area or offered funding for inner-city development for 15 years.

Building toxins: we had them in the materials after the war and the barns are not without contamination either. Livestock doesn't shit rose petals.