What is the ruling on benefiting from a house built with a portion of unlawful money, knowing that its owner lost more money than he gained from unlawful sources, and that one of the sons spent from his own private money to furnish an apartment for himself within it, and how would the inheritance of the sole daughter from it be?

Eating forbidden things has dire consequences, including being deprived of answered prayers. For your father's repentance to be accepted, he must dispose of the ill-gotten money he acquired through deception by spending it on Muslim welfare. If he disburses this money, the house becomes purified and it is permissible for you to live in it. But if he does not disburse this money, it is better for you to rent another place.