Data catalogue/ Environmental risk
Environmental risk
Seven environmental risk types (flood, radon, noise, landfill, coal mining, air quality, invasive plants) each scored at the property level. The kind of data that used to cost thousands in bespoke reports.
Each risk type 1 token · call only what you need · 100 tokens = £1
Risk profile at a glance. Every risk type returns a standardised label and numeric score: easy to display, compare, and alert on.
What's included
What you get back
Flood risk
Property-level flood risk score with standardised Low/Medium/High/Very High label. Surface water and river flooding assessed separately.
GET /risks/flood/
Radon risk
Radon gas probability rating. Critical for conveyancing, insurance underwriting, and buyer due diligence in affected regions.
GET /risks/radon/
Noise & air quality
Road and rail noise levels (dB) plus air quality data at property coordinates. Scored and labelled for easy integration.
GET /risks/noise/ + /air_quality/
Landfill proximity
Distance to active and historic landfill sites. Risk-scored by proximity and site type. Relevant for insurance and mortgage risk.
GET /risks/landfill/
Coal mining
Coal mining subsidence risk for properties in affected areas of England, Scotland, and Wales. Required for conveyancing in many areas.
GET /risks/coal_mining/
Invasive plants
Japanese knotweed and other invasive species risk based on recorded sightings within 50m of the property. Mortgage lender risk indicator.
GET /risks/invasive_plants/
The API
API response
Each risk type is a separate endpoint: call only what you need. All return the same standardised structure.
Risk by type1 token
Pass a UPRN and a risk type. Get back a standardised risk label, numeric score, and data source. Mix and match the 7 risk types as needed.
{
"uprn": 100023336956,
"risk_type": "flood",
"risk_label": "Low",
"risk_score": 8,
"risk_score_max": 100,
"description": "Low probability of flooding",
"data_source": "Environment Agency",
"data_date": "2024-01"
}
curl "https://api.homedata.co.uk/risks/flood/?uprn=100023336956" \ -H "Authorization: Api-Key YOUR_KEY"
Built for
Who uses it
Insurance underwriting
Assess flood, radon, and environmental risk for property insurance pricing and eligibility decisions at scale.
Conveyancing tools
Surface environmental risk flags during the conveyancing process. Coal mining, radon, and invasive plants are standard solicitor searches.
Portfolio risk mapping
Quantify environmental exposure across a property portfolio for ESG reporting, lending risk, or acquisition screening.
Data sources
Where it comes from
This dataset is part of the UK property data platform: 29 million UK properties covered.
- Environment AgencyFlood risk zones (NAFRA2), radon, air quality, coal mining, landfill, noise pollution datasets.
- British Geological SurveyRadon potential mapping for England and Wales.
All eight data groups
Check what could go wrong.
Pay as you go, 100 tokens = £1, no subscription needed.