Yes, the piping and electricity need to be redone, that is correct, but please not the screed floor in the basement, I’m not up for that. The rest has already been done properly over the years.
1. Stay away if you don't feel good about it.
2. Get an expert involved and then see! Whether the seller takes anything from it, you have to clarify with her.
As I said, the damp walls suddenly appearing where there was no water and definitely not directly at the damage site is already difficult
Morning, that is not difficult, but standard. The water simply spreads on the slab and may then also rise at a completely different spot. Depending on the ground structure, this can be dried without any problems, and until the floor is removed, many things are possible.
How is the situation otherwise?
Olli