Which wall is best suited for a single-family house?

Hello everyone! I would like to build a house in the near future and inform myself as best as possible beforehand. That is how I came across this forum.

My wish:
- Kfw70 (or possibly better, it is a cost issue)
- Single-family house, detached
- 130 sqm
- Solid construction
- Turnkey built
- (Ground) heat pump

I have now inquired with various companies, all of which build turnkey and also enable KfW70. All have a different type of masonry.
- One has styrofoam blocks with steel elements that are plugged together and then filled with concrete and are already sufficient for KfW70
- Another has stones made of mineral (he said the stuff was formed in a volcanic eruption) material and many air inclusions
- Yet another builds with some kind of aerated concrete, on which rigid foam boards still have to be glued on the outside for KfW70.

Can you help me find out which type of masonry is best suited for me?

Hello,

read up on this a bit; this "Jehovah topic" is recurring and cannot be conclusively answered.

On the one hand, you describe "squeaky houses," then expanded clay block houses, and in the next step a normal wall construction these days, whose basic basis is formed by another stone.

There is no "the" wall construction for "all" construction projects; there are advantages and disadvantages for all. Which one is ultimately built always depends on personal gut feeling. Exclusively when choosing whether to comply with the energy saving ordinance or rather 70 or even 55 and below, the budget - sometimes also the female land seller - decides.

Kind regards

I have done that once, but I did not find any concrete advantages/disadvantages of the individual building materials. Do you know of something like that anywhere? Perhaps in table form, nicely and clearly comparing Styropor blocks, Poroton, KLB, etc.?