Private funded project involving roadway improvements for a lot split. The city comes in and request additional work to the city water supply system. The additional work is under a separate contract with the city and is almost $50,000 . Additional work does not improve the property involved. It is performed by the same subcontractor but without any knowledge to the owner of the property in question. Can the Sub file a mechanics lien for the city requested extras without any preliminary notice being sent regarding the extra / separate contract work?