Can we get a loan of 250K from the bank?

If I understand correctly, you have a condominium assigned in the land register. Then it should be considered as value like any other condominium. However, I could imagine that the bank wants a land charge as security. Or (like in a community of heirs) does the entire house belong jointly to the brother and your wife and you only use the larger apartment? Then 1. the value of the share would not be €120,000 but only €95,000 (€120,000 + €70,000 = €190,000 * 50%). 2. Then the registration of a land charge might be more problematic.