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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.

What's included

Flood Risk →

Property-level flood risk score with standardised Low/Medium/High/Very High label. Surface water and river flooding assessed separately.

GET /api/risks/flood/

Radon Risk →

Radon gas probability rating. Critical for conveyancing, insurance underwriting, and buyer due diligence in affected regions.

GET /api/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 /api/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 /api/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 /api/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 /api/risks/invasive_plants/

Risk profile at a glance

Every risk type returns a standardised label and numeric score — easy to display, compare, and alert on.

14 Maple Avenue, Bristol BS8 3AJ

Environmental risk summary

Flood Low

Radon Low

Noise Medium

Landfill Low

Coal Mining Low

Air Quality Good

Invasive Plants Low

6/7

Low risk

1/7

Medium risk

Risk types

API response

Each risk type is a separate endpoint — call only what you need. All return the same standardised structure.

GET /api/risks/flood/?uprn=100023336956 200 OK

{
  "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"
}

Available risk types

flood radon noise air_quality landfill coal_mining invasive_plants

Built for

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.

API endpoint

Pass any 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.

GET /api/risks/{risk_type}/?uprn={uprn}

curl "https://api.homedata.co.uk/api/risks/flood/?uprn=100023336956" \
  -H "Authorization: Api-Key YOUR_KEY"

View full endpoint docs → Get a free API key