Reviewed: 12 August 2026. Measure separate straight runs and record openings independently; do not estimate from lot area.
A quote-ready fence measurement is a schedule, not one total. It preserves each run, change of direction, level change, gate opening and access note so a contractor can verify quantities without guessing what the number includes.
Field method
- Sketch the site and label points A, B, C and so on.
- Measure each straight horizontal plan run between direction changes.
- Record pedestrian and driveway gate clear openings separately.
- Count corners, ends, junctions and changes in level.
- Photograph each run from both directions with its label.
- Note surface, slope, vegetation, rock, old concrete and carry distance.
Illustrative run schedule
| Run | Gross length | Openings | Net infill | Notes |
|---|---|---|---|---|
| A–B | 12.4 m | 1.0 m pedestrian gate | 11.4 m | Flat; existing timber removal |
| B–C | 8.6 m | None | 8.6 m | Moderate fall |
| C–D | 15.2 m | 3.5 m driveway gate | 11.7 m | Restricted side access |
Gross boundary run is 36.2 m. Gate openings total 4.5 m, leaving 31.7 m of ordinary infill. Gates still need posts, foundations and hardware; subtracting them from infill does not remove them from project cost.
Allowances are system-specific
Do not add a blind ten per cent to every fence. Modular panels are ordered by panel and bay; timber palings need cutting/selection allowance; rails come in stock lengths; chain-link uses rolls and strain assemblies. Use the measured net length, then apply the chosen system’s take-off method.
If the legal line is uncertain, stop and read the boundary-versus-measurement guide. Otherwise enter the run schedule in the fence length worksheet, then transfer the length, corners and gates into the cost calculator.
Measure runs, not one perimeter number
Break the fence into straight segments between corners, gates and changes of direction. Record each segment separately. This exposes short panels, custom angles and places where the proposed material must step or rake. A single perimeter total hides the features contractors need to price.
Openings and net fence length
Measure each clear gate opening and identify pedestrian, single swing, double swing or sliding use. Net infill length equals total alignment length minus clear openings, but gate posts and transitions remain construction items. Do not subtract an approximate driveway width and assume the opening is complete.
Slope measurement
Measure horizontal run for quantity planning and record vertical change separately. For a stepped panel system, note the number and position of steps. For raked or site-built timber, mark grade breaks and the intended top line. A tape laid along the ground on a steep slope measures a longer diagonal distance than the plan run and can distort panel quantities.
Illustrative quantity layouts
L-shaped yard: 12.4 m + 8.7 m with a 1.0 m pedestrian opening gives 20.1 m net infill, plus one corner and two gate posts.
Three-run boundary: 9.2 m + 14.6 m + 6.1 m = 29.9 m alignment. A 3.2 m driveway and 1.0 m side gate leave 25.7 m infill, but two distinct gate systems still need pricing.
Allowance is material-specific
Do not add one universal waste percentage. Timber palings, standard panels, rails, mesh rolls and fabricated aluminium use different module lengths and offcut logic. Give the measured layout to the quantity calculator, then apply product/manufacturer requirements and round to whole components.
Use the fence length calculator to total runs and openings. For a timber layout, continue to the timber calculator; for pool segments, use the pool tool. If the line itself is uncertain, return to boundary measurement before ordering.