Various wall systems of houses, fastening capabilities, strength

I am not interested in any heating, flooring, tiles, or anything else, as I am doing all of that myself.

Hello,

a sensible wall construction is from outside to inside: curtain facade – insulation layer (I prefer wood wool because of the thermal advantages and good sound insulation) – GFM board (non-glued wooden battens arranged diagonally about 35mm thick (this can even be used directly as an interior wall if you like wooden walls. But it can also be covered with clay plaster to have white interior walls).
In the lower part of the house, clay plaster can be applied on a plaster carrier board. The rest of the wall structure would be the same. The walls in contact with the ground are, of course, different.
This is, from a building biology perspective, one of the best wall constructions. High insulation values can be easily achieved.

Otherwise, one is left with the choice of a solid wood facade or something new like "triqbriq." That is a very nice idea.

I am a bit surprised that you exclude a heat pump, since that is the cheapest way to heat. If costs should be low, the air conditioner cannot be beaten, and with photovoltaic you cool for free in summer.

I wouldn’t do an Alpine style just so the house architecturally yodels: regional building styles have their (including climatic) reasons, without the associated high-altitude sun you can quickly curse the wide roof overhangs. I don’t see plaster below and wood paneling above as a sensible reason for a mixed construction method, but a hillside location is indeed a recommendation for a masonry construction (which does not make creating a wood construction appearance any harder). Excluding a provider just because their standard is only single sheathing seems nonsense to me. That belongs to the detailed planning "sampled," e.g. to sheath the kitchen walls differently. The crucial layer for the "load-bearing capacity" of the wall is the second highest wall layer. Here, a wood-based material brings more than an additional or thicker gypsum board. I would always take an independent architect with a hillside location. The general contractor’s planning authorization holders literally offer the "necessary" architect services. Being charged separately for the services of discount architects in the fee league changes nothing about that.

However, this is relevant and should lead to the selection of all turnkey providers if the finishing standard "weather-tight shell" is aimed for.

Hi, thanks for the answer. So I personally attest to having relative experience in house building, which is, as you may not have read, the third in my life :)

Also, I’m not interested in heating

And at the same time the first in the prefabricated house segment. Where various, sometimes very different providers have been thrown together in one pot and the typical marketing jargon of the sellers has been reproduced so faithfully that I almost believe in literal quotes.

All providers can build houses. Whether they can build one effortlessly that fits their own ideas and requirements is the central question.

The emphasis is on "effortlessly."

Example wood paneling:
There are providers who do this as standard and have a lot of experience with it.

On the other hand, there are many providers who say "sure, we can," but do it as standard rather rarely or never.

With the planned house, which one should you build with?

In the same way, you can also buy better wall paneling from a provider who lines the walls with a sheet of paper for an additional charge. But this usually leads to extra costs above those of the providers who have better standard paneling and whose employees (or their subs) are less practiced and trained in a different construction.

But it should be.

There are providers where a surface heating system is included at reasonable prices. With others, moon prices are called out for surface heating systems.

And no matter what kind of heating technology you install today – to really make the house future-proof, you should consider a surface heating system.

Unless you do it yourself and also pour the screed.

And if you really only want the shell, then you should go to a local carpentry shop. That almost always comes cheaper than the big providers.

And yes, I have addressed this with everyone and they all do it quite individually.