Is it permissible to deal with an Islamic bank to finance the finishing of a residential apartment, whereby the bank pays the finishing costs to a specialized company and does not give me the money directly, and then I repay the amount to the bank in installments with added interest?

It is permissible for the bank to enter into an Istisna’ (manufacturing) contract with you for the finishing of the property, in accordance with the regulations of the Islamic Fiqh Academy, which are: specifying the type, kind, quantity, and description of the manufactured item, and determining the delivery date. It is permissible to defer the entire price or pay it in installments, and it is permissible to include a penalty clause in the contract, unless there are unforeseen circumstances. In summary, there is no objection to the bank agreeing with you to finish the property with specified characteristics, delivery date, and known price, so that the bank then contracts with a builder to execute this. It is advisable to consult scholars in your country for further verification and detailed inquiry.