Site levels from Scottish Government LiDAR (Scottish Remote Sensing Portal).
Desk-based report from official LiDAR; for detailed design or legal boundaries, commission a measured survey.

Site: PlotLevels SAMPLE site (Peebles edge, not a real plot)
Site ref: -
Client ref: -
Generated: 25 Oct 2026 10:53

1. SURVEY DATE
  LiDAR flown: 2015–2019
  LiDAR flown 2015–2019 (7 years ago). Work done on the ground since then will not show.
  Changes since survey: Not checked in this run.
  LiDAR records the ground on the day it was flown, so we show the survey date on every page and sheet.

2. SOURCE DATA
  LiDAR for Scotland Phase 3: flown 2015–2019, 0.5 m grid, 100.0% of site.

3. ACCURACY
  LiDAR for Scotland Phase 3: Typical ±0.14 m on open ground against 48 OS levelled trig pillars (October 2026); the all-Scotland model gives ±0.14 m typical on open ground (95% within ±0.28 m).
  Heights come from the Scottish Government's airborne LiDAR ground model (DTM), published through the Scottish Remote Sensing Portal. We test it ourselves. Where two independent surveys cover the same ground (372 places across Scotland), how far they disagree tells us how far each can be from the ground. On open, gently sloping ground a level is typically within ±0.14 m, and 95% of levels are within ±0.28 m. At 108 Ordnance Survey trig pillars seen by two surveys, the surveys agree to 0.12 m RMSE. Ranges widen under trees, on steep ground and where the supplier filled gaps; every spot level and the trust map carry their own ±, and cut and fill volumes are given as a range. Contours are drawn from this model with light smoothing held to a quarter of the contour interval.
  Contours: every 0.5 m. LiDAR for Scotland Phase 3 is a 0.5 m grid flown 2015–2019, so 0.5 m contours are the finest we'd recommend.

4. COORDINATES AND UNITS
  Plan: OSGB36 / British National Grid (EPSG:27700); units metres; DXF $INSUNITS = 6 (metres), real-world coordinates.
  Heights: Metres above Ordnance Datum Newlyn (ODN), as supplied in the source LiDAR DTM (no height transformation applied by us).
  All CAD outputs stay in British National Grid as supplied; no reprojection of heights. Boundaries drawn on the web map (WGS 84) are converted to British National Grid with PROJ using the OS OSTN15 grid.

5. CAD LAYERS (uniclass)
  boundary: Y-Zz_50_10-M_SiteBoundary
  major: Y-Zz_40_15_50-M_MajorContours
  minor: Y-Zz_40_15_55-M_MinorContours
  contour_label: Y-Zz_40_15-T_ContourLabels
  spot: Y-Zz_40_50-M_SpotLevels
  spot_text: Y-Zz_40_50-T_SpotLevels
  notes: Y-Zz_20_10-T_Notes
  access_route: Y-Zz_20_10-M_AccessGuideLine
  check_on_site: Y-Zz_20_10-M_LidarCheckOnSite

6. LICENCES AND ATTRIBUTION
  LiDAR: Crown copyright Scottish Government, SEPA and Fugro (2020). Open Government Licence v3. Base map © OpenStreetMap contributors, ODbL 1.0 (faint base map on figures and plan sheets).

LIDAR CHECKS
  Trust the levels: Good 32.6%, Fair 2%, Check on site 65.4%, No LiDAR 0%. 33% of the site is open, gently sloping ground with fine LiDAR, where airborne levels are usually most reliable. 65% should be checked on site, mainly under trees, hedges or buildings (ground level interpolated). This map shows where the LiDAR is less certain.
  Change between surveys: Only one LiDAR survey fully covers this site, so we can't compare surveys or show change over time here.
  Access guide line: 41.3 m, average 1 in 32, steepest 10 m 1 in 25. No access point was marked, so we guessed it: the point on your boundary nearest the closest mapped public road (Loaning Crescent, right beside your boundary). If your access is elsewhere, use the gradient bands map, which covers the whole site, or mark the access point next time you order.
  Natural ground from Scottish Government LiDAR; not a driveway or path design. Driveway gradients are set by each council's roads guidance, so treat these figures as a guide and check them with your designer.

7. IMPORTANT
  For a planning application, use a location plan on licensed OS mapping; for setting out, use a measured survey. Site boundary as drawn by the customer.
  Desk-based report from official LiDAR; for detailed design or legal boundaries, commission a measured survey. Flood maps are shown for awareness, not as a flood risk assessment, and constraint layers as published; full terms at plotlevels.com/terms.