My architect estimated 400€ per cubic meter two years ago when there were no offers yet; apart from the land, which was not part of the estimate anyway, that was a relatively accurate estimate. Since you want to partly shop at the hardware store and also have some things contracted out, I think the 400€ per cubic meter for the house might still be appropriate for you currently. The calculation is based on the footprint across all floors, so nothing should be omitted.
Get back to me and tell me what came out of it!
Thank you very much – if I use your rule of thumb or the one per square meter, I arrive at the following values:
- 400 € / m³ x 700 m³ = 280 k€ or
- 2,000 € / m² x 145 m² = 290 k€ + garage
I suspect/hope that it will not be more expensive than 300 k€. It will probably come down to an LWWP (Stiebel Eltron), but possibly instead of the ventilation system, windows with ventilation will be installed. Also, that could save some money, although it might lead to somewhat higher heating costs.
: Let’s just leave it like that. We simply have completely different mentalities – that’s okay. You know enough examples where expensive brand products simply don’t perform better. And yes, of course, I would also consult an expert before buying a hardware store tile to avoid buying junk like "Made in China," but rather a good price/performance ratio or smart shopping.