A buy-to-let mortgage lender will assess how much you can borrow based on the likely rental income that your property will generate. Normally, lenders will require the rental income to be 125% of the monthly mortgage payments on an interest-only basis.
The majority of lenders will also require you to be earning an income yourself, so this might be considered too.
For further advice on how much you can borrow, get a quote online or contact our team today.