Live British Geological Survey lookup
Postcode Geology & Diggability Checker
Enter a UK postcode and combine public BGS 1:50k geology with excavation inputs to flag likely diggability risks before hiring plant.
This tool checks BGS bedrock, superficial deposits, artificial ground and mass-movement map layers around the postcode, then translates the result into practical planning prompts for spoil, wet clay, made ground and breaker risk. Spoil is calculated automatically from length, width, depth and the loose-spoil factor; BGS map layers are surface/near-surface prompts, not a vertical borehole log.
postcode
m
m
m
auto volume multiplier
mm
0–3
0–3
Result
Step 2 After entering the postcode above, press the button to load the live BGS geology data.
Uses postcodes.io plus BGS WMS GeoJSON. No postcode is stored by this site.