What is a Survey Plat?
A survey plat is a precise, drawn-to-scale map of a land division, prepared by a licensed surveyor and, in most cases, recorded with the county. Where a deed describes land in words, a plat shows it as geometry: lots, blocks, streets, easements, and the measurements that define them. Once recorded, the plat becomes part of the public land records, and deeds can describe property simply by referencing it.
Key Features of a Survey Plat
- Lot and Block Layout: Plats divide land into numbered lots within blocks, the basis of lot and block legal descriptions.
- Boundary Measurements: Bearings, distances, and curve data for every line, tied to monuments or reference points.
- Easements and Rights of Way: Utility corridors, access easements, and road dedications drawn in their exact locations.
- Certifications and Approvals: Surveyor certification and local government approvals required for recording.
- Recording Information: Book and page or instrument number, so deeds can incorporate the plat by reference.
Survey Plat vs. Survey Map
The terms sound interchangeable, but they serve different purposes. A plat is typically recorded and establishes or subdivides parcels; a survey map documents conditions on the ground for a specific transaction or project and is usually kept as a reference rather than recorded. For a fuller breakdown, see Plat vs. Survey Map: What’s the Difference?
Why Survey Plats Matter
- They Create Parcels: Recording a plat is how subdivisions legally come into existence under the recorded plat system.
- They Simplify Descriptions: “Lot 5, Block 2” replaces pages of measurements, reducing transcription errors in later documents.
- They Are the Starting Point for Boundaries: The recorded geometry is the written record of the lot lines, easements, and street widths. Where it disagrees with what is on the ground, the original monuments set by the surveyor control over the dimensions on the plat, which is the long settled order of evidence: natural monuments first, then artificial monuments, then adjoining boundaries, then course and distance, then area.
When the Land Is Not on a Plat
Plats cover subdivided land. Rural parcels, irregular tracts, and older properties are often described by metes and bounds instead, where the description itself carries every bearing and distance. For those descriptions, BoundaryLogic Trace turns the text into a plotted boundary with closure and precision checks shown on every plot. Try BoundaryLogic Trace today!