House purchase, from the grandparents to the grandchildren

Thank you all.

I am now working on an appraisal and then we will bring the sale to completion.

Just because there are compulsory heirs, no one can force my grandparents to sell the house for exactly the determined price, right?!

Thank you all. I am now arranging an appraisal and then we will get the sale done.

But please do not negotiate down the resulting sale price... after all, the grandparents need the money.

I suspect that an expert would come up with a significantly lower value than the €170,000 that the broker apparently assumed as the market value (?). The reason is that one third of the house belongs to someone else, so the grandparents could actually only sell two thirds. And then these two thirds are not worth two thirds of the market value. The ownership structure is likely to have a significantly depreciating effect in a neutral assessment.

I am with ypg - if the money is supposed to be enough to ensure the grandparents a carefree old age, then either the purchase price should not be too low (which also excludes the inheritance claims of the other heirs) or one should rather consider the option of "taking over rent."

But judging by how the OP sounds, the well-being of the grandparents does seem to be very important to him.

The cleanest option remains the purchase at a fair price for everyone, and it is really best to have an appraisal done by a publicly appointed expert. If payment is made through rent, problems can still arise in the event of inheritance; with a purchase (at most the price can then be "questioned"), it is actually a clean/safe matter.

If the rent/care arrangements are clearly regulated, no one can cause you problems, even if the grandparents die earlier than expected.

I just heard about this in the neighborhood: the daughter had made such an agreement with the parents: house in exchange for care and rent. The parents moved into an age-appropriate apartment, care was not yet necessary. There was also a son who had not been seen for years and had severed ties with the family in a dispute. Unfortunately, both parents then died relatively soon in an accident – the real value for the house was by far not reached through rent (and the care not yet needed). Then the estranged son claimed he had to sue for his inheritance share and demanded the sale of the house and his compulsory portion from it.
He was clearly told that in this case, the sister was simply "lucky" (luck is relative, she was more than shocked and mourned deeply for the parents who died too early) – the house belonged to her without any ifs or buts.

Only because of this do I know about this possibility.