LOCATION

EX11 1AR - Flood, Heat, Air & Subsidence Risk - Ottery St Mary (EX11)

East Devon, Ottery St Mary (EX11)

Flood: Very lowHeat: LowerAir quality: LowGround: Low

Climate risk summary for EX11 1AR

EX11 1AR in Ottery St Mary (EX11) has a Very low flood risk - EA NaFRA2 data records no properties in a flood risk zone in this postcode. Heat risk is Lower, with a median (50th percentile) of 16 days above 25°C per year, averaged over the 2021-2040 period under the RCP8.5 high emissions scenario (Met Office UKCP18). Air quality is Low at PM2.5 5.2 μg/m³, above the WHO annual guideline of 5 μg/m³ (Defra UK-AIR). Ground conditions are Low risk, with Sandstone geology; shrink-swell risk is classed as improbable (BGS GeoClimate).

How does EX11 1AR compare with the rest of the UK?

  • Air pollution: cleaner than 82% of councils
  • Heat risk: cooler than 68% of councils
  • Subsidence risk: lower risk than 58% of postcodes
  • Green space access: better green access than 57% of English postcodes

What is the flood risk in EX11 1AR?

Flood risk at EX11 1AR is rated Very Low, based on Environment Agency NaFRA2 modelling.

Environment Agency flood zone data shows very low flood risk for EX11 1AR in Ottery St Mary (EX11). EA NaFRA2 data shows no properties at flood risk in this postcode. The band reflects the highest flood risk within the postcode; some properties within this postcode may face little or no direct flood risk. For a specific property, a conveyancing search will confirm the exact flood zone position.

How is the air quality in EX11 1AR?

Air quality at EX11 1AR is rated Low, based on Defra UK-AIR annual mean PM2.5 data. Fine particulate matter (PM2.5) comes primarily from road traffic, industry, and domestic burning. Long-term exposure above the WHO guideline of 5 µg/m³ is linked to respiratory and cardiovascular health risks. Buyers and renters in higher air quality risk areas may wish to consider whether the property is near busy roads or industrial sources.

Is subsidence a risk at EX11 1AR?

British Geological Survey data classes the underlying soil at EX11 1AR as Sandstone, with shrink-swell hazard rated improbable (subsidence risk band: Low). A structural survey is the reliable way to assess ground conditions for a specific property.

Where does this data come from?

This LocalRisk report for EX11 1AR draws on four official UK open data sources: Environment Agency NaFRA2 flood modelling, Met Office UKCP18 climate projections, Defra UK-AIR PM2.5 monitoring, and British Geological Survey GeoClimate subsidence mapping. Risk ratings are a screening tool, complementing - not replacing - the searches and surveys ordered as part of a property transaction. Data covers East Devon and is updated as new official datasets are published.

About the East Devon area

East Devon has a varied setting spanning coastline, river valleys and rolling countryside and experiences cool, wet winters and warm summers, shaped by maritime influence and local topography.

Climate risk can change street by street, so it is worth checking neighbouring postcodes too. The full risk report for EX11 1AB is at localrisk.co.uk/postcode/EX111AB, and you can compare EX11 1AR side by side with any UK postcode at localrisk.co.uk/compare.