Parquet dirty with cement/acrylic/construction dust

And above all, cover the floor as long as there are still [Handwerksarbeiten] to be done in the house.

Do you know which craftsmen those were? And could you prove it? Then I would hold them liable and have the damage repaired by a company.

Do you know which craftsmen those were? And could you prove it? Then I would hold them liable and have the damage repaired by a company.

It’s not that simple when building with a general contractor/turnkey or "turnkey" contract. With own work during the construction phase before handover, the general contractor usually turns a blind eye just with two eyes, because it is not desired that craftsmen have to treat a construction site, i.e. their workplace, with kid gloves. This should also be stated in the fine print for everyone. So it is officially not allowed or wanted, but only to be done after acceptance. It doesn’t matter if it is done by a craftsman or by yourself. …. Annoying: re-treating, oiling, and over time the differences disappear.

Yes, we partially covered it, but we will not make that mistake again.

It's not that simple when building with GU/BT or "turnkey."
During the construction phase BEFORE handover, usually only two eyes from the GU/BT overlook own work because it is simply not desired that craftsmen have to handle a building, i.e., their workplace, with velvet gloves. This should also be stated in the fine print for everyone. So it is officially neither allowed nor desired, but only to be done after acceptance. It does not matter whether by a craftsman or oneself.
….
Annoying: re-treating, oiling, and over time the differences disappear.

Yes, I would be reluctant to hold the craftsmen responsible. Firstly, I have no evidence, and secondly, we mainly blame ourselves for not covering everything.

I would simply re-oil that. From experience, oiled floors need regular maintenance anyway, so that evens out.