sentences:  The easement may also be an affirmative easement, that permits a person to do something on the servient estate, or a negative easement that allows the holder of the easement to restrict activity on the servient estate.Estate is a common law concept.In real estate law, an easement appurtenant may be created for the benefit of the original owner (the seller or grantor) of property who splits off a property and conveys part of the original property; the owner may retain an easement for an access (such as a driveway or utilities).