Price increase - Our construction company wants 21.4% more

So seriously: as silly as it may be, if we are still in the range of sash windows and the raised ceiling, we are FAR away from "it's no longer possible"

I understand your objection. We have to take out a second loan that we will be paying off for the rest of our lives, but at least it is possible for us. However, I never said "it's no longer possible." But, as I said, I understand the point and you are right about it.

Such a forum might help and deter going to a lawyer due to possible additional costs, but here it's about more than 1-2 EUR.
I would immediately consult a colleague lawyer regardless of any negotiation skills.

Correct, I would definitely want to know the legal side or my related options before accepting anything.

I understand your objection. We have to take out a second loan that we will be paying off for the rest of our lives, but at least it is possible for us. However, I also did not say, "it's no longer possible." But, as I said, I understand the point and you are right on the matter.

Lay it on thick. How much does the place cost? m2, location, brick? Gable roof, etc. I'm really curious now.

That would interest me as well. Costs are often discussed in the forum. It feels like in the past two years the rough estimate of 2000€/m² has increased to 2500€/m². What is the current price per m² after the price increase (excluding ancillary construction costs, basement, garage, upgrading, etc.)?

It feels like in the past two years the thumb rule has gone up from 2000€/m² to 2500€/m².

Two weeks ago in Bad Vilbel, we already heard 3000 € / m² multiple times...

We heard the €3000/m² price repeatedly in Bad Vilbel two weeks ago...

We are at the old prices; if you only take the living area without the covered terrace at €2,850/m² (upscale standard). Building in Brandenburg is therefore not comparable with BW or Bavaria, etc.