Clear title is the phrase used to state that the owner of real property

Real property

In English Common Law, real property, real estate, realty, or immovable property is any subset of land that has been legally defined and the improvements to it made by human efforts: any buildings, machinery, wells, dams, ponds, mines, canals, roads, various property rights, and so forth...

 owns it free and clear of encumbrance

Encumbrance

Encumbrance is legal technical terminology for anything that affects or limits the title of a property, such as mortgages, leases, easements, liens, or restrictions. Also, those considered as potentially making the title defeasible are encumbrances...

s. In a more limited sense, it is used to state that, although the owner does not own clear title, it is nevertheless within the power of the owner to convey clear title. For example, a property may be encumbered by a mortgage. This encumbrance means that no one has clear title to the property. However, standard terms in a mortgage require the mortgage holder to release the mortgage if a certain amount of money is paid. Therefore, a buyer with enough money to satisfy both the mortgage and the current owner can get clear title.