1.3 Parol Evidence, Prescription, Adverse Possession, and Acquiescence

Why unwritten rights are tested

A written deed is the starting point, but boundaries and rights can change through conduct over time. NCEES lists parol evidence, prescriptive rights, adverse possession, and acquiescence in the Principles of Evidence outline, and lists unwritten rights as a controlling factor in legal descriptions. The exam expects you to recognize the doctrine, identify the evidence, and stay inside the surveyor's role.

The recurring trap is over-reaching: a surveyor gathers and reports evidence and renders a boundary opinion, but a court adjudicates title. A defensible answer separates the measured and observed facts from the legal conclusion.

The parol evidence rule

Parol evidence is oral or extrinsic evidence outside the four corners of a written instrument. The parol evidence rule says that when parties reduce an agreement to a complete, unambiguous writing, earlier or contemporaneous oral statements cannot be used to contradict it.

The rule has important exceptions a surveyor uses constantly:

• Latent ambiguity: when a description reads clearly but cannot be applied on the ground without choosing between two possibilities, extrinsic evidence is admissible to resolve it.
• Locating a described line: parol evidence may help apply an unambiguous description to physical evidence, such as identifying which old fence is the called-for line.
• Patent ambiguity: a defect obvious on the face of the deed; courts are more reluctant to admit outside evidence to cure it.

Adverse possession

Adverse possession can transfer title by operation of law when a non-owner possesses land for the statutory period under specific conditions. The classic elements are remembered with mnemonics, but learn the substance:

1. Actual possession and use consistent with the land's character.
2. Open and notorious, so a diligent owner would notice.
3. Exclusive, not shared with the true owner or the public.
4. Hostile or adverse, meaning without the owner's permission; permission defeats the claim.
5. Continuous for the full statutory period set by state law.

Some states add claim of right or color of title, and many require payment of taxes. Tacking lets successive adverse possessors combine their periods if they are in privity, such as a deeded transfer of the occupied area. Permission is the great defeater: a recorded license or a neighbor's consent restarts or destroys the clock.

Prescriptive easements

A prescriptive easement grants a right to use another's land, not ownership of it. Its elements resemble adverse possession, but it generally does not require exclusivity because a use right can coexist with the owner's use. A path used openly, continuously, and without permission for the statutory period can ripen into a prescriptive easement.

Keep the distinction sharp for the exam: adverse possession yields title; prescription yields a use right.

Acquiescence, agreement, and estoppel

Boundary by acquiescence can fix a line when adjoining owners treat a physical line, such as a fence, as the boundary for a long period, often the statutory period, even without a written agreement. Boundary by agreement (parol agreement) can settle an uncertain line when neighbors expressly agree and then occupy to it. Estoppel can prevent an owner who induced reliance on a stated line from later denying it.

The surveyor's role and reporting

The surveyor measures and locates evidence of occupation: fences, walls, hedges, roads, cultivation, and improvements. The surveyor reports possible unwritten-rights issues so the client and counsel can act. The surveyor should not state on a plat that adverse possession has occurred, because that is a judicial conclusion. Instead, show the record line, show the occupation, note the conflict, and let the title professional or court resolve it. State law controls statutory periods and elements, so answer from the facts supplied rather than a remembered local rule.

Color of title and constructive possession

Color of title is a written instrument (often defective) that appears to convey title but does not. It matters because possession under color of title can support constructive possession of the entire described tract even where actual occupation covers only part, whereas possession without color generally extends only to the area actually occupied (pedis possessio). Many states also shorten the statutory period or add a tax-payment requirement when the claimant holds under color of title. On the exam, watch for a defective deed plus partial occupation: color of title can expand the claim to the whole described parcel.

Permission defeats adverse claims

The single most tested defeater is permission. A use that begins or continues with the owner's consent is not hostile, so it cannot ripen into adverse possession or a prescriptive easement. Owners protect themselves by granting a revocable license, posting, or recording permission. If a scenario states the neighbor used the strip with the owner's blessing, the adverse claim fails no matter how long or open the use was. Conversely, a use that began without permission does not become permissive merely because the owner later tolerated it.

Repose and the policy behind the doctrines

These doctrines exist for repose: society prefers settled, visible boundaries over stale paper claims. Statutes of limitation bar an owner who slept on rights while another openly possessed. Acquiescence and agreement reflect the same policy applied to uncertain lines that neighbors have long honored. Understanding the policy helps you predict the answer: the doctrine that stabilizes long-standing, visible occupation usually prevails over a recently discovered record discrepancy, provided its elements and the statutory period are met.

Reporting unwritten-rights conflicts on the survey

When the record line and the occupation line differ, a competent survey shows both: the deed or record boundary and the line of possession (fence, wall, cultivation), dimensioned, with a note describing the apparent conflict. This lets counsel evaluate adverse possession, prescription, acquiescence, or a needed agreement. The surveyor states facts (what is recorded, what is occupied, for how long if known) and an opinion on the boundary, but stops short of declaring title transferred. That separation of measured fact from legal conclusion is the defensible exam answer.