Water connection installed incorrectly - Right to correction from the general contractor?

That's how it is. The statements of the OP allow no other conclusion than that there were no agreements. Thus, your case is completely different.

This is a matter of coordination. In our bathroom, a stone basin will be placed on an antique table in front of a Sicis glass mosaic wall. The black wall fixtures and siphon have been carefully selected. Everything has been discussed and marked. I would not accept a half-centimeter deviation.

I consider zero tolerance to be difficult. Money can't buy everything. But your trades are running smoothly. For me, it is currently showing during finishing that coordination is important, but inspections accompanied by daily coffee visits are essential.

I find zero tolerance difficult. You can't buy everything with money.

Absolutely right, even the attempt to buy everything with money is pretty foolish. Tolerance for deviations must always be given in house construction. However, it is also important that visually sensitive areas for the builder are executed as agreed and as close to perfection as technically possible.

I find zero tolerance difficult. You can't buy everything with money. But your trades are running. Especially during finishing, agreements are important, but checks with daily coffee visits are indispensable.

Yes, that is certainly helpful for me too, I am on the construction site every 2-3 weeks (an hour’s drive from home) and accompany the progress. It is important to me to thank the people who bring me so much joy (now) and quality of life (in the future) with their work. I "catch" them when something is done right and well – which is always beneficial and purposeful – also with my own children or employees.

This is a matter of agreement. In our bathroom, a stone basin is placed on an antique table in front of a Sicis glass mosaic wall. The black wall fittings and siphon were carefully selected. Everything was discussed and marked out. I wouldn’t accept half a centimeter deviation.

If you build an average house where a bit more is saved on fittings because simply not that much money is available, then it may be that there is no detailed planning for the bathroom. Either everything is clear according to the drawing or there is enough buffer in the dimensions so that the rest does not matter.

If I commission something vaguely, I can be annoyed afterwards but then have to accept limited results. There probably is no right to adjustment then.

In this case.... yes.... a washbasin doesn’t belong pressed into a corner anyway.... a proper photo or something like that doesn’t come from the OP. Twice their own fault! is all I can say. Stepping into the trap and then not even accepting the help offered.

On the other hand, I wouldn’t show up in my own thread anymore either if someone here, as pretentious as we know him, talks to me about a slaughterhouse.

Firstly, I have not read that the sink was installed as [Schwarzarbeit] or the water connection. How do you know that? If that is the case, it does not change the fact that this defect justifies completely knocking out the tiles and relocating the connection. Regardless of whether tax-free or with tax. K.

That was stated in another thread by the OP....