New single-family house in southern Germany

Then he probably realized that he miscalculated. I once calculated my sqm (620) with the 2500 €. That makes me feel sick.

620? So 310 per semi-detached house? I don't believe that. Are you including the basement in that?

Edit: but yes, 2100 - 2500 (depending) can be calculated. 3k seems a lot to me though.

He probably then realized that he miscalculated. I once calculated my sqm (620) with the 2500 €. That makes me feel sick.

Then you can go into the generously planned storage rooms and wait until you feel better :D

620? So 310 per semi-detached house? I don't believe that. Are you including the basement?

Yes, with basement. But basement with underfloor heating, fully tiled and toilet.

Then you can go to the lavishly planned storage rooms and wait until you feel better :D

No, I’d rather lie down in the oversized party room that nobody needs. The bathroom is just around the corner. ;)

There is also a difference in photovoltaics that is not only reflected in key figures, so it is difficult to compare 1:1.

Yes, that's true. Nevertheless, and without having researched further details, I have my doubts whether the difference between Senec and Vaillant really justifies a factor of 2. Senec certainly has a good reputation.

maybe pay a realistic price right away - without GU insolvency, without a butcher who thinks he can play GU - but without significant construction defects, without spending the difference on experts, lawyers, and the like