A lien is an encumbrance that makes property security for the payment of a debt or discharge of an obligation. About liens A lien is like a public mark put on property that shows up in government files.The Mechanics Lien is simply a piece of paper containing certain information that is filed with a government office. This howto guide provides a starttofinish explanation on how to file a California mechanics lien. An involuntary lien, on the other hand, is placed on your property without your consent, usually as a result of a court judgment or tax lien. A lien is a legal claim that gives someone or an entity the right to take possession of an asset under certain conditions. When a lien is placed on a property, it encumbers the property. It means the owner cannot legally, sell, refinance, or transfer a clear title of ownership. A summary of the essential provisions of a money judgment. This is important because property can be used as collateral for debt voluntarily or involuntarily.