In which area are you building? Unfortunately, I can’t assess the mentioned price myself... But if that - despite the current price level - is rather an overestimation, that gives hope :)
BW in the northern Black Forest.
Of course, we also have cost increases. Especially reinforcing steel has risen extremely, which is quite noticeable with our 2 waterproof concrete floors that lie on the slope.
According to the current awarding/offer status, including civil engineering, planning and essential parts of the exterior area and extras like controlled residential ventilation and KNX, we are at €3,300/m2 of living and usable space. I can’t calculate the basement separately right now since, as I said, we are building with individual contracts with the architect.
However, we still have some open trades and price escalation clauses in offers. But we also have enough extras that can be done without. Own contribution is not included in the 3.3k.
I would like to add, however, that we are still >10% above the original estimate. But that is not unusual with architects even without a crisis.
BTW regarding construction interest rates: Constant Maturity Swap is back below 2%.