Is the second method of purchasing "rent-to-own" housing units from "CNEP Bank" considered usurious, given that 25% of the housing unit's value is paid upfront, then the remaining amount is paid in installments over 25 years with an added annual profit margin of 5%, and the contract is drafted as a loan with interest, despite the housing units being owned by the bank and sold by it on an installment basis?

It is permissible for the bank to sell apartments in installments at a higher price than the cash price, as long as the apartments are owned by the bank, provided that the total price is known to the buyer at the time of the contract, that the remaining price does not change with a change in the interest rate, that the contract does not stipulate a late penalty, and that ownership transfers to the buyer immediately. It is not permissible to stipulate installment interest separately from the price. It is permissible to purchase from the bank when there is an urgent need, even if there is an error in the contract's wording, and the sin falls upon the bank. As for lease-to-own (ijara muntahia bi al-tamleek), it is different, and its details are available in previous fatwas.