New York Land Surveying
Boundary Law
PART 0: THE NAVIGATOR
Section Cognitive Tier Focus Area Question Range
PART I The Primer Critical Axioms & N/A
Frameworks
PART II Tier 1: Foundational Definitions, NY Q1 – Q15
Syntax Education Law, RPAPL
Basics
PART II Tier 2: Complex Conveyances, Riparian Q16 – Q35
Simulation Rights, Practical
Location
PART II Tier 3: Grandmaster Overlapping Statutes, Q36 – Q60
Synthesis ALTA 2026,
High-Stakes Liability
PART I: THE PRIMER
Mastering this specific test bank translates directly to elite professional performance by
embedding the precise legal, mathematical, and ethical thresholds required to defend land
boundary determinations in New York State. The objective is to forge practitioners capable of
navigating the complex intersection of New York Real Property Actions and Proceedings Law
(RPAPL), riparian common law, and strict state education mandates without incurring
professional liability.
The "Critical Axioms" Cheat Sheet
● RPAPL 2008 Amendments (Adverse Possession): A "claim of right" strictly requires a
reasonable basis for the belief that the property belongs to the adverse possessor. De
minimis non-structural encroachments (fences, hedges, mowing) are legally deemed
permissive and non-adverse.
● Right of Entry (GOL § 9-105): Surveyors may cross lands to perform duties but are
strictly forbidden from entering residential or storage buildings. Civil liability for actual
damages remains fully intact.
● Hierarchy of Evidence: Resolving conflicting deed calls unconditionally follows this order
of precedence: Natural Monuments > Artificial Monuments > Adjacent Boundaries >
Courses & Distances > Area/Quantity.
, ● Riparian Apportionment: Lateral boundaries extending into water bodies must equitably
apportion the navigable access. Methods include Proportionate Frontage (coves),
Perpendicular to Thread (rivers), Long Lake, and Pie Methods. Upland owners possess
the absolute right to wharf out to navigable depths.
● The "Altered By" Mandate (Ed Law § 7209): Modifying a sealed map requires the
altering licensee to affix their own seal, the notation "altered by," a signature, the date,
and a specific description of the alteration.
PART II: THE ELITE TEST BANK
Q1: A licensed land surveyor receives a boundary map previously prepared and sealed by
another New York licensee. The client requests the addition of a newly constructed retaining
wall to the map. Based on New York Education Law Article 145 § 7209, which action is the
MOST ACCURATE procedure? A) Apply a new seal over the original seal to assume full liability
for the entire boundary determination. B) Draft the new retaining wall, redact the previous
surveyor's name, and sign the document. C) Apply the notation "altered by," affix a personal
seal, sign, date, and provide a specific description of the alteration. D) Refuse the assignment,
as New York law strictly prohibits altering any survey map prepared by another licensee under
any circumstances.
● The Answer: C (Apply the notation "altered by," affix a personal seal, sign, date, and
provide a specific description of the alteration.)
● Distractor Analysis:
○ A is incorrect: Over-sealing obscures original authorship and violates the specific
statutory procedure for modifications.
○ B is incorrect: Redacting names constitutes professional misconduct and fails to
meet the statutory requirement for documenting alterations.
○ D is incorrect: Altering is legally permissible provided the surveyor adheres strictly
to the "altered by" protocol.
The Mentor's Analysis: Statutory law dictates the exact mechanism for modifying professional
work. When updating existing maps, the immediate priority is preserving the original record
while legally accepting responsibility only for the new modifications. By utilizing the "altered by"
protocol, you bypass the common trap of assuming liability for unverified historical data.
Professional/Academic Intuition: Altering another surveyor's map requires an explicit,
dated, and signed description of the exact alteration accompanied by the altering
surveyor's seal.
Q2: A surveying field crew is retracing a boundary line and must locate a critical property corner
suspected to be inside a locked, detached storage shed on an adjoiner's property. Under New
York General Obligations Law § 9-105, which conclusion is the MOST ACCURATE regarding
this entry? A) The crew may enter the shed provided they display proper professional
identification upon request. B) The entry is strictly prohibited, as the statute explicitly denies
authority to enter any building used for storage. C) The crew may enter the shed only if
accompanied by local law enforcement. D) The entry is permitted, but the surveyor assumes
absolute civil liability for any property damage.
● The Answer: B (The entry is strictly prohibited, as the statute explicitly denies authority to
enter any building used for storage.)
● Distractor Analysis:
○ A is incorrect: Identification allows crossing land, but does not grant access to
, residential or storage structures.
○ C is incorrect: Law enforcement cannot override the specific statutory exclusion of
storage buildings under GOL 9-105.
○ D is incorrect: While civil liability remains, the entry itself is legally unauthorized and
constitutes trespass.
The Mentor's Analysis: Right of entry is a limited privilege, not a blanket search warrant. When
operating under GOL 9-105, the immediate priority is distinguishing between open land and
structures. By utilizing the structural exclusion rule, you bypass the common trap of committing
statutory trespass. Professional/Academic Intuition: Surveyors may cross lands, but
entering residential or storage buildings without express owner permission is always
prohibited.
Q3: In 2024, a property owner files an adverse possession claim against a neighbor based on a
non-structural hedge planted in 2012 that encroaches three feet across the boundary line.
Based on the 2008 amendments to RPAPL Article 5, which legal conclusion is the MOST
ACCURATE? A) The hedge constitutes a substantial enclosure and satisfies the hostility
requirement. B) The hedge is legally deemed a de minimis non-structural encroachment and is
permissive. C) The hedge establishes a boundary by practical location due to mutual
acquiescence. D) The claim is valid if the encroacher maintained the hedge for 10 continuous
years.
● The Answer: B (The hedge is legally deemed a de minimis non-structural encroachment
and is permissive.)
● Distractor Analysis:
○ A is incorrect: The 2008 amendments explicitly removed hedges and fences from
the "substantial enclosure" hostility definition.
○ C is incorrect: Practical location requires a clearly demarcated line mutually agreed
upon, not merely an encroaching hedge.
○ D is incorrect: Maintenance across a boundary is now statutorily defined as
permissive and non-adverse.
The Mentor's Analysis: The 2008 RPAPL amendments revolutionized boundary disputes by
protecting neighbors from accidental forfeiture. When evaluating minor landscaping
encroachments, the immediate priority is applying the de minimis rule. By utilizing RPAPL § 543,
you bypass the common trap of classifying routine lawn care as hostile possession.
Professional/Academic Intuition: Under current New York law, fences, hedges, and lawn
mowing are explicitly permissive and cannot form the basis of an adverse possession
claim.
Q4: When resolving a discrepancy in a sequential conveyance where the deed calls conflict, a
New York surveyor discovers that the distance measured to a described stone wall differs from
the mathematical distance stated in the deed. Based on the hierarchy of evidence, which action
is the MOST APPROPRIATE? A) Prorate the discrepancy across the entire boundary line. B)
Hold the mathematical distance, as it provides a more precise engineering solution. C) Hold the
stone wall, as artificial monuments control over courses and distances. D) Average the
mathematical distance and the field measurement to ensure equity.
● The Answer: C (Hold the stone wall, as artificial monuments control over courses and
distances.)
● Distractor Analysis:
○ A is incorrect: Proration is used for simultaneous conveyances (subdivisions), not
sequential metes-and-bounds deeds.
○ B is incorrect: Precision does not equal legal intent; mathematics yield to physical