How to Read Cadastral Maps & Deed Metes and Bounds: Spotting Overlapping Property Lines

A deed is not a physical fence; it is a mathematical instruction set. When a deed describes property using metes and bounds, it lays out a sequence of directional bearings and linear distances that must enclose a physical polygon on the ground.

Most land buyers scan their title document, see an official clerk's stamp, and assume the government has verified that the described land actually exists in the exact shape and size listed. In reality, land registries and county recorders check that documents meet formal filing requirements. They do not send a field crew with a total station to verify whether your seller's deed overlaps the parcel next door.

1. Anatomy of a Metes & Bounds Description

Every metes and bounds description relies on two fundamental components: metes (measurements of direction and distance) and bounds (physical or legal terminal boundaries).

Notice the structure of each course:

• The Quadrant Bearing: North or South, followed by degrees, minutes, and seconds, deflected toward East or West. A call of North 18° 42' 15" East means: face dead North, turn 18 degrees, 42 minutes, and 15 seconds toward the East, and walk in that direction.
• The Distance: Typically in feet, chains (66 feet), or meters.
• The Monument Call: The physical terminal target: "to a 5/8-inch iron pin," "to a blazed white oak," or "to the centerline of a dry gully."

2. The Legal Order of Evidence: Why Distances Lose in Court

When there is a discrepancy between what a deed says on paper and what physical markers exist in the ground, courts follow a strict Hierarchy of Calls developed over three centuries of property law:

1. Natural Monuments: Rivers, rock outcrops, high water marks, and ridge crests. These reign supreme because they cannot be easily fabricated or moved.
2. Artificial Monuments: Original surveyor pins, iron rebar with plastic surveyor caps, concrete boundary pillars, and historical stone monuments set by the original surveyor.
3. Adjoiner Calls: Lines established by junior/senior adjacent titles (e.g. "along the northern line of lot 4").
4. Bearings and Distances: The numerical measurements written on the deed.
5. Calculated Area: Acreage figures (e.g. "containing 5.2 acres more or less") hold the absolute lowest legal weight. If the boundary lines encircle only 4.4 acres on the ground, you own 4.4 acres. The phrase "more or less" legally protects the seller against area shortfalls.

3. Senior Rights vs. Junior Rights in Overlapping Deeds

Overlaps occur when two adjoining parcels have deeds whose legal descriptions overlap the same physical strip of land. This usually happens when a large parent estate was carved up piece by piece over several decades.

The determining legal doctrine is Senior Rights:

• The Senior Grantee: The parcel deeded out first in time holds senior rights. The grantor can only convey what they actually own at the moment of signing.
• The Junior Grantee: The parcel created later in time holds junior rights. If the seller mistakenly deeds 50 feet of land that was already sold to a neighboring buyer ten years prior, the junior deed is legally void regarding that 50-foot strip.

A standard title search often looks only at the subject property's direct chain of title back 40 years. It frequently misses that an adjacent parcel created 60 years ago holds senior rights to the eastern boundary line.

4. How to Spot Overlap Red Flags on a Cadastral Diagram

Before putting down an earnest deposit, request the registered survey plan or subdivision plat. Watch for these four danger signals:

• Dashed Interior or Boundary Lines: On cadastral survey diagrams, solid lines represent verified boundary lines backed by physical monument recovery. Dashed or dotted lines frequently denote unverified adjoiner lines, contested fence lines, or unconfirmed boundary alignments.
• Unclosed Mathematical Traverses: A legitimate survey forms a mathematically closed loop. If the surveyor's coordinates do not return to the exact point of beginning (a mathematical error of closure), the deed description is flawed.
• Discrepancies Between Fences and Pegs: In rural subdivisions, landowners frequently build fences along convenient physical paths (avoiding trees, gullies, or rocks) rather than along true survey lines. If an existing fence is set back 15 feet inside your boundary, and the neighbor has farmed or maintained that strip for decades, you may face an adverse possession claim.
• Missing Adjoining Title Folio References: A thorough cadastral diagram always lists the volume, folio, or deed book numbers of every surrounding property owner. If the diagram leaves adjoiners blank, the boundary reconciliation was never completed against neighboring titles.