An easement appurtenant—also known as an appurtenant easement, an appendant easement, or a pure easement—is an easement created to benefit another tract of land, with the use of the easement being incident to the ownership of that other tract of land.

An easement appurtenant benefits one tract of land (the dominant estate or tenement) to the detriment or burden of the other tract of land (the servient estate or tenement).

Easements appurtenant are attached to the land (are said to “run with the land”) and are automatically transferred when either the dominant estate or the servient estate is sold or transferred to a new owner.

In Washington State, an easement appurtenant is recognized as a non-possessory right to use another person's land for a specific benefit to the holder's adjacent land. This type of easement is tied to the land itself (dominant estate) rather than an individual, meaning it 'runs with the land' and is automatically transferred to new owners when the property is sold. The creation of an easement appurtenant typically requires a written agreement that is recorded with the county recorder's office to provide notice of the easement's existence to future buyers. The easement remains in effect unless it is explicitly terminated by the parties involved, through abandonment, or by other legal means. Washington law requires that the use of the easement must be necessary and beneficial to the enjoyment of the dominant estate and must not excessively burden the servient estate.