Offer Comparison - The Agony of Choice

Without knowledge of your house design, I find that hard to assess. In lightweight walls, I do not necessarily see a loss of value. Is [WDVS] your explicit wish?

Am I reading this wrong or is one brick and the other plastered? I find brickwork clearly more valuable and durable.

11.5 The facing shell is mostly clinker here in the north
Ah, he also has plaster with him hm .....

Tendency towards regional. Especially due to the massive construction in the upper floor.
But the 18cm core insulation also sounds good

Unfortunately, I can no longer adjust the first post. The wall structure of Viebrockhaus is still a little different.
Two-shell wall structure 15 cm aerated concrete masonry, 16.0 cm core insulation, approx. 1.5 cm air gap, 11.5 cm outer shell, trowel plaster (two-layer plaster structure), approx. 44.0 cm total wall thickness.

Photovoltaics are too small, battery gone unless these are kfw40+ houses
Do an Excel and compare the complete construction specification

Both offers are designed for 40+. I have the overview in Excel. I can post it later.

Without knowledge of your house design, I find that hard to assess. I do not necessarily see a lower value in lightweight walls. Is ETICS your explicit wish?

I can post the house design here again. As a guide, we have the Maxime 430 from Viebrockhaus.
We consciously decided on a two-shell masonry because we heard from friends, family, and other builders that it is higher quality and more energy-efficient than conventional ETICS. Personally, I also do not consider lightweight walls to be inferior.

Am I reading this wrong or is one clinker and the other plastered?
I find clinker significantly higher quality and more durable.

The house will be plastered later. My wife insists on it because she simply finds it visually more appealing and modern. Clinker is certainly an advantage, but I don’t want to hear the complaints for the next 30 years.

11.5 cm facing shell is mostly clinker here in the North
Ah, he also has plaster with it hm .....

Yes, we are also building in Schleswig-Holstein. My wife was born and raised here. She is fed up with the clinker look, so she wanted plaster on purpose – two-tone, of course.

Without going into detail now, just calculate the photovoltaics separately and have it offered to you externally by solar installers. That will almost certainly be cheaper and have more power.

I see it the same way. Photovoltaics definitely outsourced. Get further advice here from the photovoltaics experts.