Free Air Quality Check by Postcode

HouseCheckup checks air quality for any UK postcode using DEFRA background air pollution data. See PM2.5 (fine particulate matter) and NO₂ (nitrogen dioxide) concentrations — the two pollutants most harmful to health. Poor air quality affects 1 in 3 UK properties. The £14.99 Complete report includes full air quality analysis with health impact context and comparison to WHO guidelines.

Try or search any UK postcode

Free instant results from official UK government data. No sign-up required.

Get the full picture for £14.99

This free tool checks one data point. The HouseCheckup Complete report combines 70+ data sources into an 18-page report with a composite IQ Score (0–100) — covering flood, EPC, crime, schools, transport, ground stability, investment potential, and more.

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Frequently asked questions

Research from King's College London shows that properties in areas with poor air quality sell for 2–4% less than comparable properties in cleaner areas. The effect is strongest in urban areas near major roads. HouseCheckup's IQ Score factors air quality into the overall property assessment.
HouseCheckup uses DEFRA's background air pollution maps, which model PM2.5, NO₂, PM10, SO₂, and ozone concentrations across the UK at a 1km grid resolution. This is the same data used by local authorities for Air Quality Management Areas (AQMAs).

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