Yes - you’ll need to have an offer accepted on a home before we can submit your mortgage application to a lender.
If you haven’t yet found a home, you can still get a Mortgage in Principle to show the amount you’re likely to be able to borrow. Getting a Mortgage in Principle with Trussle will also speed up your application with us when you do find a home, as all you’ll need to provide us with the details of your new home.