Easement by prescription:
Easements by prescription, also called prescriptive easements, are implied easements granted after the dominant estate has used the property in a hostile, continuous and open manner for a statutorily prescribed number of years. Prescriptive easements differ from adverse possession by not requiring exclusivity.
Once they become legally binding, easements by prescription hold the same legal weight as written or implied easements. But, before they become binding, they hold no legal weight and are broken if the true property owner takes appropriate acts to defend their ownership rights. Easement by prescription is typically found in legal systems based on common law, although other legal systems may also allow easement by prescription.
Laws and regulations vary among local and national governments, but some traits are common to most prescription laws:
open and notorious (for example, obvious to anyone).
actual, continuous (for example, uninterrupted for the entire required time period); this does not necessarily require use daily, weekly, etcetera.
adverse to the rights of the true property owner.
hostile (for example, in opposition to the claim of another; this can be accidental, not "hostile" in the common sense), and,
continuous for a period of time defined by statute or appellate case law.
Unlike fee simple adverse possession, prescriptive easements typically do not require exclusivity. In states that do, such as Virginia, the exclusivity requirement has been interpreted to mean that the prescriptive user must use the easement in a different way from the general public, for example, a use that is "exclusive" to that user.
The period of continuous use for a prescriptive easement to become binding is generally between 5 and 30 years depending upon local laws (sometimes based on the statute of limitations on trespass). Generally, if the true property owner acts appropriately to defend their property rights at any time during the required time period the hostile use will end, claims on adverse possession rights are voided, and the continuous use time period will be reset to zero.
In some jurisdictions, if the use is not hostile but given actual or implied consent by the legal property owner, the prescriptive easement may become a regular or implied easement rather than a prescriptive easement and immediately becomes binding. An example of this is the lengthy Irish Lissadell House rights of way case heard since 2010, that extended long-standing consents given to individuals into a public right of way.
In other jurisdictions, such permission immediately converts the easement into a terminable license, or restarts the time for obtaining a prescriptive easement.
Government- or railroad-owned property is generally immune from prescriptive easement in most cases, but some other types of government owned-property may be subject to prescription in certain instances. In New York, such government property is subject to a longer statute of limitations of action, 20 years instead of 10 years for private property.
In most U.S. jurisdictions, a prescriptive easement can only be determined for an affirmative easement not a negative easement. In all U.S. jurisdictions, an easement for view (which is a negative easement) cannot be created by prescription.
Prescription may also be used to end an existing legal easement. For example, if a servient tenement (estate) holder were to erect a fence blocking a legally deeded right-of-way easement, the dominant tenement holder would have to act to defend their easement rights during the statutory period or the easement might cease to have legal force, even though it would remain a deeded document. Failure to use an easement leading to loss of the easement is sometimes referred to as "non-user".
