"An appurtenance is something subordinate to or belonging to another larger, principal entity, that is, an adjunct, satellite or accessory that generally accompanies something else. The word derives from Latin appertinere, "to appertain".
In a legal context, an appurtenance refers to a right, privilege, or improvement belonging to or which accompanies a principal property. It could for instance refer to an empty portion of land behind an adjoining house that is therefore regarded as that house´s back yard. The idea being expressed is that the back yard "belongs" to the house, which is the more significant of the two. In 1919, the Supreme Court of Minnesota adopted the following definition of an appurtenance: "That which belongs to something else. Something annexed to another thing more worthy." – Cohen v Whitcomb, (1919 142 Minn 20)." - (en.wikipedia.org 16.02.2020)
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