Sorry but I haven’t asked the neighbors about such specific topics now …
But actually everything is there in the article:
Between the bank and the customer it is agreed that the bank may only foreclose if it has a due claim against the customer. This can be the case, for example, with an expiring fixed interest agreement or if the bank terminates the loan.
They can terminate it if significant facts have changed between the contract conclusion and the disbursement… this also includes that you indicate you now earn less or something like that.
Falling property values or that the new investor finds your loan unprofitable also belongs to that!
Then your loan is called due and you can look to get a new one within two weeks because you then have to repay the remaining loan.
And it also says why it is difficult to find a new bank: "If the investor acquires the claim, he has the mortgage registered in his name in the land register. If the customer now looks for follow-up financing at another bank, a bank can become alert if it sees the names of well-known investors or buyers. Whether a follow-up loan will work out is uncertain."
Enough about that now. Let everyone finance as they like.