What is the ruling on taking an interest-based loan from a bank to purchase a house?

First: It is not permissible to borrow with interest from usurious banks unless there is a compelling, legitimate necessity.

Second: Islamic banks conduct legitimate financing transactions such as (Murabaha, Istisna'a, Ijarah (definition) Muntahia Bil Tamleek, and diminishing Musharaka). One must understand the nature and conditions of the transaction to pass judgment on it.