How to measure a land boundary for fencing with line, corners and parcel cautions
Before fencing, the key question is where the fence line should run. Actual use, title area and parcel references should not be confused.
Field takeaways
- Fence corners, turns, gates and obstacles should be recorded separately.
- Parcel references are not legal boundary decisions by themselves.
- Slope, gate and turn allowance affect fence quantity.
- Photo notes document walls, ditches and old fence traces.
- MapLab Survey keeps line length, polygons, photos and exports together.
Know which boundary you are fencing
The old wire on the ground, the ploughed edge and the line the neighbour uses are not always the registered parcel boundary. Fencing on the wrong one is expensive to undo and can turn into a dispute. Before the work starts, discuss the parcel reference, the actual occupation and the line the client wants as three separate things; where the legal boundary matters, the authorised survey process is required.
The field steps
- Open the parcel or working boundary as a reference layer.
- Record the fence line by walking it or point by point.
- Add photo notes at corners, gates, walls, trees, ditches and slopes.
- Check the line length and, where closed, the area.
- Share the result as KML, DXF, GeoJSON, CSV or a report.
Measure the corners; the runs follow
The valuable points are the corners — the straight runs define themselves between them. Walking the whole boundary with GPS adds small deviations that inflate the length you order. Photograph each corner with its surroundings; it settles most later questions in seconds.
Why the wire length differs from the map
The straight line on the map and the wire on the ground are not the same length: bends, gate openings, slope, post spacing and corner turns all add material. Divide each straight run by the post spacing, then add a post at every corner and gate — corners carry the tension, so they are never the place to save. In the report, do not present the line length and the bill of materials as the same number.
The neighbour and the legal line
MapLab Survey makes the drawing, measuring and documentation easy in the field. But where there is a dispute with a neighbour or an official stake-out is needed, the parcel boundary is determined by the authorised cadastral process. The app's record is the preparation for that process, not its outcome.
Try these steps on your own phone.
MapLab Survey handles RTK/GNSS point capture, drawing, area and volume calculations and coordinate conversion, then exports to DXF, KML/KMZ, GeoJSON, Shapefile, GeoPackage, NCZ or CSV. Capture, calculation and export work offline. Live NTRIP corrections and online basemaps need a connection.
Frequently asked questions
Can a fence line be measured by phone?
For reconnaissance and field records, yes.
How is fence length calculated?
By measuring the line and considering gates, slope and turns.
Is parcel line enough for fencing?
It is a reference, not a legal decision.
How does MapLab Survey help?
It manages linework, length, photos and exports.
Technical references
The field guidance in this article is aligned with the technical and official references below.
Related: Land boundary app · Walk field boundary · Walk parcel boundary · MapLab Survey