This allows you to mortgage a property which is on a lease. The monthly rent received is converted into an EMI. The Rent received plays a major role in the calculation of the loan amount.
If you are receiving a rent then you need to present a rent agreement to concern bank along with rent credited banking of last 6 months. Rent received in a black can't be consider.
Some bank used to consider 50% of rent receivable for loan eligibility however most of the bank consider 100% for an eligibility.
There is no such loan product in banking industry who lent you money only on the basis of rent receivable.
However Banking surrogate product is there in which applicant can get a loan only on the basis of healthy banking transactions per month. You need to only submit KYC and Banking with huge transaction of last 2 years.