As with all mortgage deals, you could pay a product fee, which could be up to £1,000 or more. You may also pay valuation fees and legal fees, depending on the deal.  Make sure you factor in the fees you’ll pay when you’re comparing the cost of deals as they can make a deal with a lower rate more expensive overall. The best way to do this is by looking at the total cost over the deal period.  Find out more about the different mortgage fees that may apply.