Masonry basement for new construction KfW 40

Hello,

does anyone have experience with a cellar built from bricks that meets the Kfw 40 standard?

What measures were taken? Starting with the choice of the stone, insulation of the cellar walls...

My house has external dimensions of 10x11.5 m, with a slight (south) slope

Unfortunately, I am only getting slow support from my planner and his energy consultant at this point.

Thank you very much in advance for your tips and opinions.

does anyone have experience with a cellar built of brick that meets the KfW 40 standard?
[...] My house has external dimensions of 10x11.5 m, with a slight (south) slope

KfW40 for the laundry room and the tenants’ storage rooms ... isnichdeinernst (?)

Unfortunately, I only get sluggish support from my planner and his energy consultant at this point.

Here it might develop similarly, since we know your project far too little.

This is not about starting the concrete or brick discussion. Those who can read clearly have the advantage.

I'm not trying to start the concrete or brick discussion here.

No one claimed that either, but as you yourself say:

Who can read is clearly at an advantage

or before or after, yes :)