Hastings, Blacklands (TN34)
TN34 3LH in Blacklands (TN34) has a High flood risk - EA NaFRA2 data records 38 properties at high flood risk. Heat risk is Lower, with a median (50th percentile) of 19 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 6.7 μg/m³, above the WHO annual guideline of 5 μg/m³ (Defra UK-AIR). Ground conditions are Low risk, with Mudstone And Sandstone geology; shrink-swell risk is classed as improbable (BGS GeoSure).
Flood risk at TN34 3LH is rated High, based on Environment Agency NaFRA2 modelling.
Environment Agency flood zone data places TN34 3LH in the high flood risk band. EA NaFRA2 data shows 38 at high risk, 7 at medium risk, 10 at low 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.
Air quality at TN34 3LH 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.
BGS GeoSure data classes the underlying soil at TN34 3LH as Mudstone And Sandstone, with shrink-swell hazard rated improbable (subsidence risk band: Low). Soil type and shrink-swell behaviour drive subsidence claims following dry summers; recent ABI data shows insurer payouts rose sharply after the 2022 and 2025 hot summers. A structural survey is the reliable way to assess ground risk for a specific property.
This LocalRisk report for TN34 3LH 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 GeoSure subsidence mapping. Risk ratings are a screening tool, complementing - not replacing - the searches and surveys ordered as part of a property transaction. Data covers Hastings and is updated as new official datasets are published.
Hastings has a coastal town setting where the Old Town sits in a narrow valley between the steep East Hill and West Hill, with sandstone and clay cliffs running east toward Fairlight, and experiences cool, damp winters and warm summers, shaped by English Channel influence and local topography.
Practical check: With 38 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. With 19 hot days projected (UKCP18 50th percentile, 2021-2040 average under RCP8.5), note which bedrooms face west (hottest in evening) and whether windows allow through-ventilation. 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 TN34 1AD is at localrisk.co.uk/postcode/TN341AD, and you can compare TN34 3LH side by side with any UK postcode at localrisk.co.uk/compare.