Property risk data API UK
Seven environmental risk datasets by UPRN, from a single API call. Flood risk, radon gas, coal mining subsidence, landfill proximity, noise pollution, invasive plants, and air quality. Used by insurers, conveyancers, mortgage lenders, and property platforms building inline risk assessments.
What's in the API
Flood Risk
River, surface water, coastal, groundwater: Low/Med/High/Very High
Details →Radon Gas
Radon potential from British Geological Survey data
Details →Coal Mining
High/Medium risk from Coal Authority planning constraints dataset
Details →Landfill Proximity
Distance to nearest EA Historic Landfill site in metres
Details →Noise Pollution
Road and rail noise in dB with DEFRA plain-English labels
Details →Invasive Plants
7 Schedule 9 species (knotweed, giant hogweed, etc.): 5-mile radius
Details →Air Quality
Live DAQI index from DEFRA monitoring stations
Details →Council Tax
Council tax band: separate from environmental risk but often co-fetched
Details →Schools
Nearby schools: phase, Ofsted, distance, pupil count
Details →Combined risk endpoint
Call the property intelligence endpoint to receive all risk scores in a single API call, no need to make 7 separate requests.
curl -H "Authorization: Api-Key YOUR_KEY" \
"https://api.homedata.co.uk/risks/all/?uprn=100023336956"Run this on your own key.
100 tokens = £1 · Top up from £20 · First payment matched 100%.
Pricing
Risk data is included for every account. Pay as you go: 100 tokens = £1, first top-up matched 100%.
Pay as you go
100 tokens = £1
most calls 1 token
£50 a month
5,500 tokens a month
+10% bonus
£250 a month
30,000 tokens a month
+20% bonus
£500 a month
67,500 tokens a month
+35% bonus
£1,000 a month
150,000 tokens a month
+50% bonus
Top up any amount from £20, one-off or monthly, and every top-up after your first earns bonus tokens: 10% on any amount, up to 75% from £2,500. Change the amount or stop any time; unused tokens roll over.
See full pricing →FAQ
Do I need separate API keys for each risk dataset?
No, one API key covers all datasets. Call individual endpoints or use the combined property intelligence endpoint for multiple risk scores in one request.
What data sources back the risk scores?
Environment Agency (flood), British Geological Survey (radon), Coal Authority (coal mining), EA Historic Landfill (landfill), DEFRA (noise, air quality), NBN Atlas (invasive plants).
Can I use risk data for insurance underwriting?
Our data is used as an input signal by insurance platforms. For regulated underwriting decisions, check your regulatory requirements: we provide data, not formal risk assessments.
Build with real property data.
Your key is ready as soon as you sign up. Choose the endpoints your product needs.