The Recorder's Office has information on record for several property liens. The records are open to the public. The most common lien is a mortgage on real estate. A mortgage would include information about the lending institution, the mortgage amount and the due date or enough information to calculate a due date.
Mechanic's liens are liens for unpaid work done on the property. You can search by name for State and Federal Tax liens. The Minnesota Secretary of State will do a Tax Lien Search for a fee per name (UCC-12 Form), or you can search the records yourself at no cost.
Judgments will show on an abstract but the information is obtained through the Polk Court Administration Office. When an abstract is brought up to date, an abstract company does various searches in and outside of the courthouse. Searching for liens in the courthouse is not the same as bringing an abstract up to date. Most lending institutions will require an attorney to do a title opinion after an abstract is brought up to date to determine if there are liens on the property.