Noise & Air Quality
Road noise, rail noise, and today's air quality index for any UK property. DEFRA Lden noise data in decibels with plain-English severity labels — from Very Low to Extreme. Air quality via the UK-AIR DAQI daily forecast from the nearest monitoring station.
Noise profile at a glance
Road and rail noise are returned as separate results, each with a dB score and a severity label. If neither applies to the property, the results array is empty.
Response fields
Noise returns 0–2 results (one per source). Air quality (/api/risks/air_quality_today/) returns a separate DAQI score from the nearest monitoring station.
Use /api/risks/air_quality_today/ for live DAQI score (1–10) from the nearest UK-AIR monitoring station. Low (1–3), Moderate (4–6), High (7–9), Very High (10).
Built for
Property search platforms
Surface noise exposure alongside price and EPC. Properties above 65dB are subject to WHO adverse health effect thresholds — buyers increasingly ask.
Mortgage risk & insurance
Noise is a material factor in residential valuations. Flag properties in Very High or Extreme bands for closer scrutiny, particularly near major roads or HS2 corridors.
Developer site assessment
Planning applications in noise-sensitive areas need noise impact assessments. Pre-screen sites against DEFRA Lden thresholds before commissioning acoustic surveys.
API example
curl "https://api.homedata.co.uk/api/risks/noise/?uprn=10002341182" \ -H "Authorization: Api-Key YOUR_KEY"
{
"risk_type": "noise",
"uprn": 10002341182,
"results": [
{
"risk_type": "road_noise",
"label": "Medium-High",
"score": 63.4,
"score_unit": "dB",
"intersects": true,
"distance_m": 0,
"search_radius_m": 0,
"radius_description": "At property",
"properties": {
"description": "Traffic intrusive indoors (63dB)"
}
},
{
"risk_type": "rail_noise",
"label": "High",
"score": 68.1,
"score_unit": "dB",
"intersects": true,
"distance_m": 0,
"search_radius_m": 0,
"radius_description": "At property",
"properties": {
"description": "Significant rail noise (68dB)"
}
}
]
}