As a general rule, most BTL lenders will only consider applicants over the age of 21 for a BTL mortgage. This is because lenders like to see proof of your ability to manage money (stable income, solid affordability and clean credit) over a minimum three year period.
The number of lenders you have access to may also be limited if you’re over the age of 75; many mortgage providers have maximum age caps for how old you are when you take the mortgage out, and your age when the term finishes.
If you’re concerned that your age will negatively impact your BTL application, get in touch to discuss your options with a broker; they will be able to advise you on next steps, and point you in the direction of specialist lenders with more flexible criteria.