In a land survey, the point of commencement in a land survey is the fixed, publicly known monument where a legal description starts, sitting outside the parcel itself and serving as the anchor a surveyor uses to navigate, by a series of bearings and distances, to the actual corner of the property. It is not the property corner. It’s the “you are here” marker that makes the rest of the description findable on the ground.
Why the Starting Point Sits Outside the Parcel
Metes and bounds descriptions need a reference that any later surveyor can locate independently. That’s the job of the point of commencement. It’s typically a section corner, quarter-section corner, or similar monument tied to the Public Land Survey System, chosen because it exists in public records and on the ground.
These reference points carry legal weight. Under Bureau of Land Management surveying standards, corners in the public land survey system are fixed in position by operation of law, and the lands within an entry are identified on the ground by marked and fixed monuments or by corner positions established through measurement.1Bureau of Land Management. Manual of Surveying Instructions 2009 The physical markers are built to last. Modern monuments are usually iron rods driven vertically into the ground with a brass cap identifying the surveyor who placed them. Older surveys may reference natural features, stone markers, or wooden posts, some of which have since deteriorated.
The reason the starting point sits outside the parcel is practical. If a description began at a corner of the property itself, and that corner was ever lost or disputed, there would be no independent reference to rebuild from. Tying the description to a monument in the broader survey grid keeps the parcel locatable even when its own corner markers go missing.
From the Point of Commencement to the Point of Beginning
The point of commencement and the point of beginning are not the same thing, and this is where readers often get tripped up. The point of commencement is where the written description starts. The point of beginning is where the property boundary starts. The lines between the two describe how to walk from the known survey monument to the first corner of the actual parcel.2Bureau of Land Management. BLM Module 3 Metes-and-Bounds Study Guide
The instructions that connect them are called “calls.” Each call combines a direction (bearing) and a distance. Bearings divide the compass into four quadrants measured from north or south, expressed in degrees, minutes, and seconds. A bearing written as “N 57° E” means the line runs 57 degrees east of due north. Distances in federal land descriptions typically appear in feet or chains.3Bureau of Land Management. Survey Basics Made Easy Each degree contains 60 minutes, and each minute contains 60 seconds, allowing for very precise angular measurements.
Once the calls deliver the reader to the point of beginning, the description changes jobs. It stops being a travel path and becomes a boundary trace, describing each side of the parcel in sequence until it loops back to the starting corner. That return is called “closure.” If the calls don’t bring the reader back to the point of beginning, the description contains an error. Even a small angular mistake can compound over hundreds of feet and leave the boundary ambiguous.
How To Read a Point of Commencement in a Deed
Open a deed or title report and the legal description usually opens with language like “commencing at” followed by a specific monument. A typical line reads something like “Commencing at the Northwest corner of Section 12, Township 3 South, Range 5 East,” followed by a series of bearing-and-distance calls. The shift from “commencing” to “beginning” later in the paragraph signals the transition from travel path to actual property perimeter.
That formatting isn’t decorative. It lets a surveyor, title company, or lender reconstruct the parcel’s location without physically visiting the site. If a description jumps straight to boundary calls without first anchoring to a known reference point, that’s worth raising with a surveyor or title professional before closing.
Not every legal description uses a separate point of commencement. In platted subdivisions, where lots are already mapped and recorded, the description may reference a lot and block number instead. Metes and bounds descriptions, and the point-of-commencement convention that goes with them, are most common for unplatted rural land or irregularly shaped parcels where no recorded plat exists.
When the Starting Monument Is Lost or Destroyed
Survey monuments can disappear. Construction, erosion, road work, and simple neglect take their toll, especially on older markers. When the monument serving as a point of commencement no longer exists, re-establishing the parcel boundary becomes more complicated and more expensive.
Federal surveying standards draw a line between two situations. An “obliterated” corner is one where the physical marker is gone but its location can still be identified beyond reasonable doubt through witness testimony, surveyor records, or other evidence. A “lost” corner is more serious: its position can’t be determined from any remaining traces or testimony.4Bureau of Land Management. Restoration of Lost or Obliterated Corners and Subdivision of Sections
For lost corners, surveyors use a method called proportionate measurement, which calculates the missing corner’s position based on the distances between the nearest surviving corners. The surveyor’s re-establishment is treated as an expert opinion, not a final legal determination. If neighboring property owners disagree with the result, a court ultimately decides where the boundary falls.4Bureau of Land Management. Restoration of Lost or Obliterated Corners and Subdivision of Sections For a buyer looking at rural property with a metes and bounds description that leans on old markers, a survey showing every referenced monument intact is worth considerably more peace of mind than one that relies on reconstructed positions.
A Note on the Construction-Law Meaning
The phrase “point of commencement” also appears in mechanics lien law, where it refers to the date construction visibly begins on a site and governs the priority of lien claims against the property. That is a different concept with the same name, operating in a different legal context. Anyone researching lien priority or construction financing should look for sources on commencement of work and the relation-back doctrine rather than on land surveying.