بسم الله الرحمن الرحيم
(Fatwa: 916/908/H=09/1436)
If you have erected this building with the sole intention of renting it out to bank then it is makrooh to give it on rent. However, the income which you will be getting from the rent shall not be termed haram. Fatawa Khalilia etc prove that its rent is not haram.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
