DE Land Surveyor key terms

A survey that locates and marks the limits of a parcel by analyzing deeds, plats, monuments, and occupation evidence. It documents where record boundaries lie on the ground and supports retracement or dispute resolution.

A physical object, natural or artificial, that marks a corner or line of a boundary. Monuments may be original, set by the surveyor, or referenced in the deed, and they generally control over distances and angles.

The element of a deed description that governs location when calls conflict. Courts commonly rank natural monuments, artificial monuments, lines of adjoining parcels, courses and distances, and area in descending order of control.

The principle that a parcel described in an earlier conveyance holds priority over a later conveyance from the same grantor where descriptions overlap. The later parcel yields to the senior description.

A legal doctrine by which a person gains title to land through open, notorious, exclusive, hostile, and continuous possession for a statutory period. Surveyors often document occupation evidence relevant to such claims.

Physical signs of how land has been used and occupied, such as fences, walls, driveways, and landscaping. Surveyors compare occupation lines with record boundaries to identify discrepancies and potential boundary issues.

A survey performed to recover the original boundary lines and corners of a previously surveyed parcel. The surveyor follows the original record evidence rather than establishing new lines at different positions.

The practice of preserving or reestablishing boundary corners so they remain available for future surveys. It includes setting durable monuments, protecting existing corners, and filing records that describe their positions.

An improvement or structure that extends onto a neighboring parcel without legal right. Surveyors identify encroachments by comparing physical features against record boundary lines and report them to clients.

A nonpossessory right to use another person's land for a specific purpose, such as access or utilities. Surveyors locate easement boundaries and show them on plats and descriptions when they affect a property.

A corridor of land or interest in land used for roads, railroads, or utilities. Surveyors determine right-of-way width, centerline, and ownership, which may be fee title, easement, or prescriptive use.

A map of a land subdivision or parcel showing boundaries, lots, streets, and monuments, usually prepared for recording. A recorded plat can create or dedicate land and serves as legal description evidence.

The division of a tract into smaller parcels or lots, often requiring a plat and local government approval. Surveyors prepare subdivision plats and ensure compliance with zoning, access, and utility standards.

Local land-use regulations that control permitted uses, lot size, setbacks, and building height. Surveyors check zoning compliance when preparing site plans, subdivisions, and boundary surveys for development.

The minimum required distance between a building or improvement and a property line, street, or other feature. Surveyors measure and stake setbacks to confirm that construction meets local zoning requirements.

A detailed land title survey prepared to a national standard for commercial real estate transactions. It shows boundaries, easements, improvements, and encumbrances, and often carries a table of title exceptions.

A method of describing land by courses, distances, and boundary features that begins at a known point and returns to it. The description follows the parcel perimeter using bearings, angles, and monument calls.

The starting point of a metes-and-bounds description from which all subsequent courses are run. It must be a recoverable, unambiguous location, often an existing monument or a described corner.

The direction of a survey line measured as an angle from a reference meridian, expressed in degrees, minutes, and seconds with a quadrant letter. Bearings define the orientation of each course in a description.

A horizontal direction measured clockwise from a reference meridian, usually north, through 360 degrees. Azimuths are common in modern surveys and mapping and can be converted to bearings for deed descriptions.

A series of connected survey lines whose lengths and directions are measured to determine point positions. Traverses may be closed loops or open lines and are adjusted to distribute measurement error.

The difference between the starting and ending positions of a survey traverse after computation. Surveyors adjust a traverse to reduce misclosure and verify that it meets the required accuracy standard.

A mathematical method that distributes random measurement error across a survey network by minimizing the sum of squared residuals. It provides adjusted coordinates and statistics for assessing survey quality.

The degree of agreement among repeated measurements of the same quantity, often expressed as a ratio such as 1:10,000. Precision differs from accuracy, which is closeness to the true or accepted value.

How close a measured or computed value is to the true or accepted value. Survey accuracy standards define allowable errors for boundary, topographic, and control surveys and are often stated at a confidence level.

A network of points with known coordinates used as a reference for surveys and mapping. It may be established by GNSS, total station traverses, or classical triangulation and is tied to a coordinate system.

A network of points with known elevations referenced to a vertical datum. It supports topographic mapping, construction, and flood studies and is commonly established by differential leveling or GNSS methods.

A durable, stable mark with a known elevation or position used as a reference for surveys. Benchmarks may be official government marks or privately set points and should be described and protected.

A system of projected coordinates defined separately for each state to support surveying and mapping. It uses zones and map projections that limit distortion and provides a common reference for positions.

A mathematical transformation that converts positions on the curved Earth to a flat map or coordinate grid. Projections introduce scale and direction distortion that surveyors account for in computations.

The ratio between a distance on a map projection or grid and the corresponding distance on the reference ellipsoid. Surveyors apply scale factors to convert between ground, ellipsoid, and grid distances.

The equipotential surface of the Earth's gravity field that approximates mean sea level. It serves as the reference for orthometric heights and differs from the ellipsoid used in GNSS positioning.

Global Navigation Satellite System, a family of satellite positioning systems including GPS, GLONASS, Galileo, and BeiDou. Surveyors use GNSS with real-time networks or static methods to establish control and locate points.

Real-Time Kinematic positioning, a GNSS technique that uses carrier-phase measurements and a base station or network correction to achieve centimeter-level positions in the field. It requires a radio or internet link.

An electronic surveying instrument combining an electronic theodolite with an electronic distance meter. It measures horizontal and vertical angles and distances and records data for coordinate computation.

The knowledge, skill, and judgment a licensed surveyor must demonstrate to protect public health, safety, and welfare. It includes technical ability, ethics, legal understanding, and responsible charge of work.

Direct control and personal supervision of surveying work by a licensed professional who is accountable for its quality. The concept defines when a licensee may sign and seal documents and delegate tasks.

The degree of care and skill that a reasonably prudent surveyor would exercise under similar circumstances. It is the benchmark used to judge professional negligence and competence in practice.

A situation in which a surveyor's personal, financial, or other interests could improperly influence professional judgment. Surveyors must disclose and avoid conflicts to maintain objectivity and public trust.

The official stamp a licensed surveyor applies to final maps, plats, and reports to certify professional responsibility. Sealing documents signifies that the work was performed or directly supervised by the licensee.