You'll need to complete a permission to let form. You can order the form by calling us on 0800 30 20 11 or by visiting us in branch. The form, sent to you by post, will need completing, be signed by all borrowers and returned to:
Mortgage Servicing - Lettings
Nationwide Building Society
Kings Park Road
Remember, you should also talk to your insurance provider to find out if letting your property will affect your property insurance policy.