A property lien is a type of security interest for a specified sum of money that attaches to a piece of real estate, according to Nolo. Types of property liens include mortgages, tax liens and mechanic's liens, states RealEstateLawyers.com.
Property liens remain on the property even if there is a change of ownership, says Nolo. Therefore, the owner of the property cannot convey a clear title until he first pays the lien. Liens are public records. As such, any person can determine whether a piece of property is subject to a lien. Lienholders have the right to foreclose the property to pay the secured debt.