Offer Comparison - The Agony of Choice

Do you know if it is possible to achieve KfW 40+ with the monolithic construction method?

No, but 40+ is an idealistic matter anyway, in my opinion it is not cost-effective.

Northern Germany is a two-shell region. I would keep it that way because the companies are capable of that.

wall construction Viebrockhaus I find strange, 15 cm inner wall is unusual.

Viebrockhaus has some cost points that could become expensive as they are not included.

Are you building in a commuter belt?

Here, there are already many opinions represented, so one more or less doesn’t really matter.

I would go so far as to say that a proper drywall partition is not only "not inferior" but also significantly superior to a supposedly massive solution with aerated concrete, both in terms of soundproofing and mounting (heavier) furniture in a hanging manner.

I don’t understand why one builds double-shell and then plaster it – standard at Viebrockhaus. A well-made ETICS is certainly fine, which especially includes high-quality plaster. If you don’t like that, that’s something else, but constructing a preference for double-shell construction out of the fact that "in the North" it "has always been done this way" is, in my opinion, wrong. In any case, I would rather go for calcium silicate bricks instead of aerated concrete if insulation is needed anyway.

Last but not least: (I have already written this here several times.) You can build Excel or Calc or Numbers spreadsheets until you’re black in the face, but that won’t reveal to you which offer is better (in terms of cheaper at the same performance). Too much depends on the very specific execution, and no building description in the world provides that level of detail. For you, the decision should be: Do you feel more comfortable with the large established building giant or rather with the smaller regional – possibly family-run – provider? As long as neither supplier botches the job, which I assume, both will deliver you a proper house, probably at very similar prices. (Differences < 10,000 EUR according to the offer I would consider negligible.)

It's not about whether it has always been done that way but whether the companies can do it or build it often.
and here it's usually done with aerated concrete+insulation+brick veneer.

Well, I too am occasionally "up North" and increasingly often see ETICS solutions there. Are they then always installed by newcomers "from the South"? Joking aside, I do not assume that it is a problem to find capable companies "up North" that install ETICS. As I said: Whether one wants that is another question, but I wouldn’t generally speak ill of it.

Greetings from "the center"

K1300S

Hello everyone,
so a Kfw 40+ is also possible with insulated bricks.
We ourselves build with TV07 bricks in 36.5 cm and would have to execute the exterior walls in 42 cm to go from KFW 55 to KFW 40.
Of course, it also depends on the rest of the house. (Fenster;Kellerisolierung;...)

Personally, I never wanted insulation on the outside of the house or a two-part structure.