In addition to the above two answers (which are both correct in my opinion), it can depend on your type of tenancy ie are joint tenants, tenants in common etc. In the process of applying for a charging order, the claimant must inform all other parties who have an interest in the property ie. normally your mortgage company (ies) and yourself. If you can evidence that you never received notification, you may be able to have it set aside. However, even if successful, all that will achieve is to start the process again. They will notify you correctly this time, and unless your fella can come up with the debt before the deadline, they'll place the charging order anyway.