Legal Description of Property: Metes and Bounds, Plat, and Rectangular Survey

A legal description of property is the precise, standardized language used in deeds, mortgages, and public records to identify a parcel of land with enough specificity to locate and distinguish it from every other parcel. Three primary systems govern how these descriptions are written in the United States: metes and bounds, the recorded plat method, and the Public Land Survey System (rectangular survey). Understanding which system applies — and how each one works — is foundational to interpreting deed types in real estate, resolving boundary disputes and surveys, and maintaining a clear chain of title.

Definition and scope

A legal description is a formal textual identifier for a parcel of real property. It differs from a street address or tax parcel number in that it carries independent legal force: courts, title examiners, and recording officers rely on the legal description, not the address, to determine exactly what land is conveyed or encumbered.

The property records and public registry system in every U.S. state requires that instruments affecting real property — deeds, mortgages, easements, liens — include a legal description sufficient to locate the land. The Uniform Law Commission's Uniform Real Property Transfer on Death Act and individual state recording statutes reinforce this requirement, though the specific form of the description varies by region and historical surveying tradition.

Three systems account for the overwhelming majority of legal descriptions used in U.S. real estate:

1. Metes and Bounds — boundary-by-boundary traversal, dominant in the original 13 colonies and states carved from them
2. Recorded Plat (Lot and Block) — reference to a subdivision map recorded in a county land records office
3. Public Land Survey System (PLSS) / Rectangular Survey — a grid-based system administered by the U.S. Bureau of Land Management covering 30 states

A fourth method — government lot descriptions within the PLSS — applies to irregular parcels along bodies of water or near survey boundaries, and some states recognize metes-and-bounds descriptions layered onto PLSS coordinates.

How it works

Metes and Bounds

Metes and bounds traces the perimeter of a parcel using a sequence of calls: a starting point (the point of beginning, or POB), a direction (bearing), a distance (in feet or chains), and a terminal monument or landmark. A complete description returns to the POB, closing the traverse. Bearings are expressed in degrees, minutes, and seconds referenced to magnetic north or true north.

The U.S. Bureau of Land Management's Manual of Surveying Instructions (most recently updated in 2009 by BLM) details the standards for monument establishment and traverse closure tolerances. A professional licensed land surveyor prepares or retraces metes-and-bounds descriptions; errors in bearing or distance can create gaps or overlaps that generate cloud on title problems.

Recorded Plat (Lot and Block)

When a developer subdivides land, a licensed surveyor prepares a subdivision plat — a scaled drawing showing individual lots, blocks, streets, and easements. Once the plat is approved by local authorities and recorded with the county recorder or register of deeds, each lot receives a designation such as "Lot 14, Block 3, Elmwood Heights Subdivision, as recorded in Plat Book 22, Page 47, [County] County, [State]." This reference is the entire legal description. The underlying survey data lives in the recorded plat document.

The American Land Title Association (ALTA) and the National Society of Professional Surveyors (NSPS) publish joint Minimum Standard Detail Requirements for ALTA/NSPS Land Title Surveys, which govern the precision standards surveyors must meet when preparing surveys tied to recorded plats for title insurance purposes.

Public Land Survey System (Rectangular Survey)

Congress established the PLSS in 1785 through the Land Ordinance of 1785 to systematically survey the Northwest Territory. The system divides land into 6-mile-square townships, each subdivided into 36 one-mile-square sections of 640 acres. Sections are further divided into quarter sections (160 acres), quarter-quarter sections (40 acres), and smaller aliquot parts.

A PLSS description reads outward from smallest to largest: "The SW¼ of the NE¼ of Section 12, Township 4 North, Range 7 East, [Principal Meridian name]." The Bureau of Land Management's General Land Office Records (available at glorecords.blm.gov) provide digitized original survey field notes and plats for PLSS states.

Common scenarios

Residential subdivision transactions almost universally use the lot-and-block method. When a buyer purchases a single-family home in a platted subdivision, the deed references the recorded plat rather than restating the full boundary traverse — a description that may be as brief as 2 lines.

Rural and agricultural parcels in the Midwest and West most often carry PLSS descriptions. A 40-acre parcel in Iowa or Kansas is typically described as an aliquot part of a PLSS section. The property appraisal process for agricultural land frequently cross-references PLSS designations against FSA Farm Tract numbers.

Older eastern states — particularly Virginia, Pennsylvania, Massachusetts, and the Carolinas — rely on metes-and-bounds descriptions that may reference historical monuments (stone walls, iron pins, stream beds) that have shifted or disappeared. These descriptions are the most frequent source of boundary disputes and surveys requiring resurvey.

Easements and partial conveyances often require a metes-and-bounds description even within a PLSS or platted area, because they describe a strip or irregular polygon that does not align with lot lines or aliquot part boundaries. Utility easements and pipeline rights-of-way almost always carry standalone metes-and-bounds traverses attached as exhibits to the recorded instrument. Understanding how these interact with easements in real estate requires reading both the easement document and the parent parcel description together.

Decision boundaries

Choosing or interpreting the correct description type depends on several determinative factors:

1. State location: PLSS applies in 30 states (all west of the Ohio River plus several southeastern states surveyed under federal authority). The remaining states rely on metes and bounds or hybrid systems. The BLM publishes the authoritative list of PLSS states.

2. Whether the parcel is platted: If a county recorder's plat book contains a subdivision map covering the parcel, the lot-and-block reference is the preferred — and often only required — form of legal description for that lot.

3. Irregular geometry: Any parcel that does not align with standard aliquot divisions or recorded lot lines requires a metes-and-bounds description. This includes flag lots, easement strips, remnant parcels, and parcels created by boundary-line adjustments.

4. Survey accuracy requirements: ALTA/NSPS survey standards impose specific precision tolerances depending on property classification (urban, suburban, rural). A title company issuing a policy for a commercial transaction will typically require an ALTA/NSPS survey that ties the legal description to measurable boundary monuments.

5. Conflict resolution hierarchy: When a deed contains both a metes-and-bounds description and a lot reference that conflict, most courts apply a hierarchy giving precedence to: (a) natural monuments, (b) artificial monuments, (c) adjacent boundaries, (d) courses and distances, and (e) area — in that order. The Restatement (Third) of Property: Servitudes and state common law doctrines govern how courts resolve these conflicts.

The title search process must verify that the legal description in each instrument in the chain of title is consistent and sufficient to convey the intended parcel. A description that omits a call, contains a misclosed traverse, or references a plat recorded under a different name than stated in the deed can impair property title and delay or block a transaction.

References

• U.S. Bureau of Land Management — Manual of Surveying Instructions (2009)
• BLM General Land Office Records (glorecords.blm.gov)
• ALTA/NSPS Minimum Standard Detail Requirements for Land Title Surveys (2021)
• National Society of Professional Surveyors (NSPS)
• Uniform Law Commission — Uniform Real Property Transfer on Death Act
• Land Ordinance of 1785 — Library of Congress Primary Source
• American Land Title Association (ALTA)