Mineral plaster instead of textured wallpaper?

Color?

Adhesive for parquet? If parquet is not glued, then at least the adhesive in the wood itself (it is rare that the material is made from a single piece).

Plasticizers etc. in the electrical installation. Synthetic resins in the plaster, in the tile adhesive, in the joint material.

And the glue from the parquet floor really stunk badly in our place...

So I wouldn't put any wallpaper on the wall anymore (and definitely not textured wallpaper, that's really very 70s style...).

We decided on a complete lime plaster and didn't paint it either. It sands a bit (you must not rub the walls).
How long it looks nice like this? No idea. We don't have a fireplace (I definitely wouldn't do this if I had one because then the walls would look "grimy" faster) and if it needs to be painted, then so be it.
Until then, we have beautiful, natural surfaces on the walls!

Textured paint might be a good option for you too. Some friends of ours have it and it looks great (also available in "eco") :)

Exactly, that reminds me: one reason why the GU uses Raufaser is that the variant "plaster + painter's fleece + painting" would otherwise be significantly more expensive

That only makes sense if the GU can save a significant amount on the surface quality of the plaster (Raufaser then covers up the mess), the work steps are otherwise identical; whereby painter's fleece is probably somewhat cheaper to apply than Raufaser. I would also think about the future if I were you, after all, the plaster will accompany you for a lifetime, the wallpaper at best 1-2 decades.

From your answers, I gather that it is common to cover the wall with wallpaper even in new buildings?

No, most people get used to painter’s fleece or just plastered walls. Then you might use Q3 or Q4. However, any wallpaper covers differences and flaws in the plaster. If necessary, you might have an accent wall, which looks better as wallpaper (there are also pretty ones now) than a colored latex paint.

I imagine it looks nice. Have you had experience with plastering work before? And how long did it take you, roughly, the two of you, for e.g. a 15 sqm room? I am apprehensive because I have no experience at all and cannot estimate this work :)

Nordlys’s suggestion with quartz sand has the disadvantage that you have it forever. You can’t just remove it. Wallpaper, on the other hand, you can. I also made a quartz wall myself in the old house: that was at the time when the wiping technique was popular. So you add quartz sand to the neutral paint and get texture, e.g. applied with a brush. Even if you had it once, you have to ask yourself if you want this in your new building and then forever. It does have somewhat of a rustic character.

If you only paint plaster, eventually you will have to deal with cracks.

A wall that is only plastered will also accumulate dust over time. One thing is certain: dust always comes through living… eventually…

It is, as always, a matter of taste. The simple woodchip wallpaper is no longer really my thing either. But everything smooth is too polished for me, I’m a bit of an old rocker after all, so it’s allowed to be a bit rougher. Our house has it all. A smooth hallway, rooms textured with quartz sand, smooth ceilings, kitchen and bathrooms with coarse fiberglass and latex. (Caution chemistry, but we’re still alive, and even the top eco-friendly person dies from something, that’s how it is!) Cracking is an issue. But you can fill cracks with putty and then paint over the spot. In our bedroom the crack has practically become invisible. It’s not that bad at all. But I tell you, Lucretzia, your question shows me you have little understanding of the matter, so doing it yourself probably won’t work for you, and then just get advice from the painter, who knows how things work. K.

We decided on full lime plaster and also did not paint it. It sands a bit (you must not rub the walls).

Lime would be exactly our thing :) Did you do it yourselves and did you already have experience with it? And if it is rather something for "advanced" people: is lime a "standard job" for craftsmen, or do not all of them do it? Or are the craftsmen costs similar to mineral plaster? (Lime is somewhat more expensive, as far as I know - but maybe the application is also more laborious?)

A wall, just plastered, also eventually accumulates dust. One thing is certain: dust always comes from living... eventually...

Yes, dust is unavoidable :) However, I notice that in our "wallpaper-rooms" more dust accumulates than in the other plastered rooms :/

how you ask shows me little knowledge of the matter, so doing it yourself probably won’t work for you, and then just get advice from the painter, who knows what goes how. K.

You don’t even have to guess that from my questions since I clearly say I have no practical experience :) By asking in the forum I have the chance to understand which direction it can go. Therefore: many thanks for your experiences :)