Is the deceased father's daughter entitled to claim inheritance in a house of which the father paid part of its price, and the mother completed the payment of installments and built two additional floors with her own money?

If the sale of a house is made by installments, its ownership transfers immediately to the buyer, and the installments become a debt upon him. After the buyer's death, the house becomes the property of his heirs, and the remaining installments are paid from his estate. If someone pays these installments, and their intention was to donate, then they are not entitled to reclaim the amount from the heirs. However, if their intention was not to donate, then they are entitled to reclaim what they paid from the estate before its division.

As for the additions made by the mother to the house from her private funds (such as building additional floors), these are not included in the deceased father's estate; rather, they are considered the mother's private property. In this case, the full value of the house, including the additions, is assessed, and the mother's share of these additions is determined based on the difference in value before and after the additions.

It is advisable to refer to the Sharia (definition) courts to resolve inheritance-related disputes to ensure that each heir receives their due share.