Prefabricated house or solid house

I'll say it clearly, some of your sentences sound naive or half-baked. To have a real comparison between prefab and solid construction, you would have to own two different houses, one of each type, simultaneously or shortly one after the other, but that's unrealistic. Our neighbors have a Swedish wooden house from Eksjö; we have a solid Ytong house without external insulation (WDVS). They chose the wooden house because of the appearance, they are simply fans of Sweden. We chose the Ytong house because we didn’t want a polystyrene wall and because we found this particular builder trustworthy, and that’s just how he builds. In terms of price, both buildings were similarly expensive and are similarly sized bungalows. I couldn’t say ours is better or theirs is better. It’s just a matter of taste, of what appeals visually, and also partly a matter of chance regarding whom you get, who seems trustworthy to you. If the craftsmen work properly, both types of houses are of impeccable quality. Only one thing maybe: walls in composite systems, meaning wood, foil, insulation mats, are significantly more problematic in case of water damage than monolithic stone walls, which simply dry out again. The Kfw 40 nonsense isn’t worth it financially; it’s something for men who are infatuated with Baerbock and women who get feelings for Harbeck...K.

My hope would be that there are already people here who have already made comparisons here.

Yes, and precisely for that reason: use the search. Top right. Everything has already been discussed in its respective sections.

Currently probably KfW 55 with the optimal price-performance ratio.

If the underfloor heating leaks in a timber frame house, as with an acquaintance, then good night.

We will build massively next year, that way you know what you have and a lot of mass for high thermal inertia is also a clear advantage.

Is there even a plot of land yet? Depending on the terrain, there are certain price differences just because of the plot of land.

But since it is supposed to be turnkey and I mean move-in ready, only a prefabricated house provider really comes into question, but there are also solid houses turnkey,

You get the scope of services you pay for. There are relocation agencies that transfer your and your entire family’s life 1:1 from Tokyo to Paderborn – including golf club membership, bread roll service, and physiotherapy appointments; this has no correlation with the construction method of the house. And you can also have wall panels made of stones flown completely from the semi-trailer onto the basement ceiling – this doesn’t necessarily require wooden beams in the walls either. The time span from signing to moving in is not a question of the construction method. Your entire line of questioning shows so much ignorance that you will save most of your time by first wasting it with browsing through the forum.

We have decided on prefabricated construction. Our currently preferred offer amounts to 2160 euros per sqm. It is a two-story house with a 30° hip roof, two bathrooms with walk-in showers, gas condensing boiler with underfloor heating, preparation for a fireplace in the living room, preparation for photovoltaics, plastering work Q2, wallpapering, floor coverings, floor slab.
Delivery in 8 months after "fulfillment of delivery prerequisites," which includes the building permit. Our offer is currently being reviewed by a professional; I will probably receive feedback today and can then get back to you.
In the above list, I only mentioned a part so that I don't have to type out the entire offer.
On this occasion, the idea comes to me of a new thread asking whether it is allowed to post complete offers here in anonymized form.