Is it permissible to purchase a house with usurious financing, knowing that the interest on the loan is taken upfront and that the buyer will bear the repayment of the remaining loan without an increase?

It is not permissible to buy a house through a usurious bank due to the Shariah prohibitions involved, such as opening an account with it and paying interest upon delayed payment. The solution is for the sale to take place directly between you and the homeowner without the bank's involvement, and for the homeowner to pay their installments to the bank.