Possibly. Liens are paid based on their respective character, regardless of when a given lien was filed. Mechanic’s liens are always the first liens paid. Common law liens are second. Mortgages are not true liens - they are forms of chattel. IRS Notices of Lien are not liens at all. Therefore, a properly recorded common law lien will secure the lienor’s interest in the liened property. Neither the IRS nor any other party (including a mortgagee) will be able to obtain clear title to property that has a common law lien recorded against it, until and unless the common law lien is paid.