Contractual penalty in the Building Code contract - new construction

As much as the actual damage is. So at least rent and interest for the time.

50 EUR/working day is a decent compensation, in case of doubt you won't get more anyway. And if you don't like that, you just have to negotiate a 10% penalty... but of course before(!) signing the contract...

Every builder has their own most pressing issue, which is why the damage scenarios differ. And as the name suggests, a penalty is supposed to hurt the contractor as well. This makes it advisable to assess it like an "increased transportation fee" significantly above the damage equivalent. By the way, a completion guarantee does not replace it. On the other hand, the contractor is already burdened by not yet receiving their next payment tranche triggered by the construction progress until acceptance / resolved complaint. Unfortunately, nowadays many builders work with general contractors who are undercapitalized repair procrastinators. : 10% of what exactly?

I did ask a very respectful question, didn't I?

More than 5% of the total house price is not allowed anyway. The contractual penalty is not supposed to drive the general contractor into bankruptcy.

At least 0.2% per working day seems appropriate to me, hence my question.

Yes, building with a general contractor was definitely a mistake.

That is 300 EUR per week. How much do you expect?
Apart from that, the construction company will probably find many reasons why the penalty clause cannot be enforced.

No, he must prove beyond doubt that he was not at fault. Bad weather usually does not count; he has to factor that in to a reasonable extent.

As much as the actual damage is. So at least rent and interest for the period.

Why rent AND interest? One or the other, and what do the general contractor's interest have to do with your interest?

Contracts can be negotiated. You don't have to accept the €50 with a signature. However, one should not think that one could profit from it.

At least 0.2% per working day seems appropriate to me, hence my question.

Then you should have agreed on that.

Contracts can be negotiated. You don't have to accept the 50€ with a signature.

The OP is not asking before concluding the contract, but after window installation.

Why both rent AND interest?
One or the other, and what do the general contractor have to do with your interest?

Of course both, if the delayed move-in causes both damages (renting the old apartment longer and financing additional expenses).

Yes, building with a general contractor was definitely a mistake.

No, why?