Is it permissible to purchase a house in installments through a non-Islamic bank in the West, for the purpose of opening a childcare facility in it to help the husband with living expenses, knowing that most homeowners do not allow opening childcare facilities or raise the rent?

It is not permissible to borrow with interest (riba) except in the case of a compelling necessity, which means that a person reaches a state of perishment or severe, unbearable hardship. The need to buy a house for the sake of expanding space for the family and increasing income is not a compelling necessity. Therefore, if the transaction with the bank for housing finance is usurious or entails an usurious condition, it is not permissible to enter into it.