Buying a building plot in or around Cockenzie and Port Seton? See how the ground falls and what constraints apply before you commit, using the Scottish Government LiDAR flown over the area and published on the Scottish Remote Sensing Portal.
Across the Cockenzie and Port Seton area (3.22 km² from the OS Open Names extent), open LiDAR covers 97.2% of the ground. The best survey for most of it is LiDAR for Scotland Phase 3, flown 2015–2019 on a 0.5 m grid (76.8% of the area).
Other parts use LiDAR for Scotland Phase 1, flown 2011–2012 (20.4%). A plot near the join between surveys may draw on both; the report shows which survey covers each part of your boundary.
That survey is about 7 years old. Plots in Cockenzie and Port Seton that have been cleared, filled or built on since then won't show those changes, so the report flags the date at the top of every page and checks for buildings mapped since the flight where it can.
Most of the ground across the area (96% of readings) lies between -2.7 m and 28.6 m above Ordnance Datum, with a median of 8.3 m. The extremes (-3 m to 32 m) can include water surfaces and data edges, so we don't quote them as ground levels.
Most of Cockenzie and Port Seton is fairly flat at this scale (only 6.4% steeper than 1 in 10). On flat plots the useful questions are usually drainage falls and how the plot sits against the road and neighbours, which the spot levels help answer.
Parts of the area are less than 5 m above Ordnance Datum, so a plot report here also lists whether SEPA's mapped flood extents touch the boundary. That is a map layer, not a flood risk assessment.
Fitting a plane through the 10 m levels, the ground across Cockenzie and Port Seton falls generally towards the north at about 19.8 m per km (roughly 1 in 51). The lowest tenth of the ground lies mostly to the west, and the highest tenth lies mostly to the east.
About 59% of the 10 m samples are flatter than 1 in 40, while one in ten is steeper than 4.2°.
On SEPA's flood maps (medium likelihood), 4.5% of the Cockenzie and Port Seton extent is inside the river flood extent, 3% inside the surface water extent and 22.1% inside the coastal extent. The extent is a rectangle round the town, so it can take in foreshore, sea and open ground. These are indicative national maps, not a flood risk assessment; a plot report gives the figures for your own boundary.
Historic Environment Scotland has 75 listed building records in the extent (7 category A, 15 category B, 53 category C), and 2 scheduled monuments, 1 conservation area and 2 inventory gardens and designed landscapes overlapping it. A plot report lists any that touch or sit near your boundary.
NatureScot protected areas overlapping the extent: Firth of Forth (SSSI); Firth of Forth (SPA); Outer Firth of Forth and St Andrews Bay Complex (SPA); Firth of Forth (Ramsar site).
46.2% of the extent lies within the Coal Authority's Development High Risk Area (where recorded past coal mining features are present).
Nearest towns with pages here: Prestonpans, 2.4 km south-west, median ground about 16 m higher; Tranent, 3 km south, median ground about 85 m higher; Musselburgh, 6.8 km south-west, median ground about 12 m higher; Haddington, 10.7 km east, median ground about 50 m higher.
Sampled every 10 m, the typical slope is 1.2°, and 6.4% of the area is steeper than 1 in 10. A single plot can be much flatter or steeper than this. Its report works at 0.5 m.
| Area checked | 3.22 km² (OS Open Names extent, at most 6 km across) |
|---|---|
| LiDAR coverage | 97.2% |
| Best survey | LiDAR for Scotland Phase 3, flown 2015–2019, 0.5 m grid (76.8%); typical ±0.14 m |
| Also used | LiDAR for Scotland Phase 1, flown 2011–2012, 1.000001500000013 m grid (20.4%); typical ±0.15 m |
| Ground levels | mostly -2.7–28.6 m AOD (2nd–98th percentile), median 8.3 m |
| Slope (10 m sample) | median 1.2°, 90th percentile 4.2°, 6.4% steeper than 1 in 10 |
| Overall fall | towards the north, about 19.8 m per km |
| SEPA flood maps (medium likelihood) | river 4.5%, surface water 3.0%, coastal 22.1% of the extent (awareness only, not a flood risk assessment) |
| HES records in extent | 75 listed buildings (A 7, B 15, C 53), 2 scheduled monuments, 1 conservation areas, 2 gardens and designed landscapes |
| NatureScot protected areas | 4 |
| Coal Authority high risk area | 46.2% of the extent |
Read from the open LiDAR at a 10 m sample on 2026-10-23; local data checked 2026-10-23. A plot report reads the same data at 0.5 m for your boundary only.
Check a plot in Cockenzie and Port Seton
Accuracy. We test Scottish LiDAR against independent survey overlaps and Ordnance Survey levelled trig pillars: heights are ±0.14 m typical on open ground (95% within ±0.28 m). Results by survey phase.
Prestonpans · Tranent · Musselburgh · Haddington
Place names and extents: OS Open Names. Contains OS data © Crown copyright and database right 2026. LiDAR: contains Scottish Government LiDAR data, Open Government Licence v3. ©SEPA 2025; this SEPA product is licensed under the Open Government Licence version 3.0. Third-party data attribution statements: https://www.sepa.org.uk/media/5zidnja5/sepa_flood_maps_data_attribution_statements.pdf (SEPA flood maps are indicative and not suitable for individual properties). Contains Historic Environment Scotland and Ordnance Survey data © Historic Environment Scotland - Scottish Charity No. SC045925 © Crown copyright and database right 2026. Open Government Licence v3. Contains NatureScot information licensed under the Open Government Licence v3. Contains Mining Remediation Authority (formerly the Coal Authority) data, Open Government Licence v3. See data licences.