Can a contractor file a mechanical lien even if I have paid for all services completed but he has come back with change orders that were never discussed or approved by me?
Generally speaking, a mechanics lien is a legal claim for unpaid construction work. Typically, anyone who provides labor or materials to property improvements can file a mechanics lien if they are not paid.
In regards to who can file a mechanics lien, in general, anyone who makes a permanent improvement to real property can file a mechanics lien. In Kentucky, lien rights are generally pretty expansive, but they don't include everyone. The following parties maintain the right to file a mechanics lien in Kentucky including prime contractors, subcontractors, sub-subcontractors, material suppliers, equipment lessors, and license design professionals.
If you have fully paid the party in question, there likely won't be a valid mechanics lien claim.