BB9 5FG - Flood, Heat, Air & Subsidence Risk - Nelson (BB9)

Pendle, Nelson (BB9)

Climate risk summary for BB9 5FG

BB9 5FG in Nelson (BB9) has a High flood risk - EA NaFRA2 data records 88 properties at high flood risk. Heat risk is Lower, with a median (50th percentile) of 9 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 Medium at PM2.5 6.0 μg/m³, above the WHO annual guideline of 5 μg/m³ (Defra UK-AIR). Ground conditions are Low risk, with Glacial Till geology; shrink-swell risk is classed as improbable (BGS GeoClimate).

• Flood: EA NaFRA2: 88 high flood risk properties in this postcode.
• Heat: Projected 9 days above 25°C per year, 2021-2040 average (Met Office UKCP18, 50th percentile under RCP8.5, 12 km grid - postcodes within the same grid cell share this value).
• Air quality: PM2.5 6.0 µg/m³ - above the WHO annual guideline of 5 µg/m³ (Defra UK-AIR PCM model, council-level average - every postcode in this council shows this value).
• Ground: BGS data: Glacial Till geology. Shrink-swell risk classed as improbable (British Geological Survey).
• Green space: 100% of households here have accessible green space within a 15-minute walk (the government's Environmental Improvement Plan standard), and 11% have a park or green space within a 200m walk of their door - near the England median (Defra, 2025).

What is the flood risk in BB9 5FG?

Flood risk at BB9 5FG is rated High, based on Environment Agency NaFRA2 modelling.

Environment Agency flood zone data places BB9 5FG in the high flood risk band. EA NaFRA2 data shows 88 at high 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. A formal flood risk search and review of buildings insurance availability is recommended before any property transaction in this area.

How is the air quality in BB9 5FG?

Air quality at BB9 5FG is rated Medium, 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 BB9 5FG?

British Geological Survey data classes the underlying soil at BB9 5FG as Glacial Till, 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 BB9 5FG 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 Pendle and is updated as new official datasets are published.

About the Pendle area

Pendle has an upland town and rural setting with steep valleys, former industrial land and surrounding moorland and experiences cool, wet winters and mild summers, shaped by Pennine elevation and exposed terrain.

What should buyers and renters check in BB9 5FG?

Practical check: With 88 properties at high flood risk here, ask about past flooding events, check the entrance threshold height relative to road level, and review buildings insurance terms. These are postcode-level indicators - conditions vary between individual properties.

Climate risk can change street by street, so it is worth checking neighbouring postcodes too. The full risk report for BB9 0AA is at localrisk.co.uk/postcode/BB90AA, and you can compare BB9 5FG side by side with any UK postcode at localrisk.co.uk/compare.