Purely from a logical perspective, the purchase price should not necessarily be decisive, but rather what the property is currently worth. Because if you, for example, receive a property as a gift, it is still counted as equity. Otherwise, it should only be valued at "0" here. Without knowing for sure, I would, as a bank, use comparable values, such as how properties in the neighborhood are selling/sold, and probably use the lowest value from that. However, this is not a well-founded statement but just a matter of logic. As we all know, not everything always proceeds logically. And in an overheated market, as a bank, I would always tend to value it lower. I also consider the bidding process to be an impertinence. We once won our property at fixed conditions, which was already not a pleasant feeling, but the bidding process is more than impertinent...