GU52 0AP - Flood, Heat, Air & Subsidence Risk - Crookham Village

Hart, Crookham Village

GU52 0AP in Hart has a Very low flood risk. Heat risk is Medium, with a median (50th percentile) of 32 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 6.6 μg/m³, above the WHO annual guideline of 5 μg/m³ (Defra UK-AIR). Ground conditions are Low risk, with Fluvial Sands And Gravels geology; shrink-swell risk is classed as improbable (BGS GeoSure).

• Flood: Flood risk is minimal in this area.
• Heat: Projected 32 days above 25°C per year, 2021-2040 average (Met Office UKCP18, 50th percentile under RCP8.5).
• Air quality: PM2.5 6.6 µg/m³ - above the WHO annual guideline of 5 µg/m³ (Defra UK-AIR).
• Ground: BGS data: Fluvial Sands And Gravels geology. Shrink-swell risk classed as improbable (British Geological Survey).
• Green space: less than 1% of addresses within 200m of green space - below the England median (ONS).

Flood risk at GU52 0AP is rated Very Low, based on Environment Agency NaFRA2 modelling.

Heat risk at GU52 0AP is rated Medium, reflecting Met Office UKCP18 climate projections (50th percentile) for this area, averaged over the 2021-2040 period under the RCP8.5 high emissions scenario. These are probabilistic projections - the 50th percentile is the central estimate within RCP8.5; the full range of modelled outcomes is wide and lower emissions scenarios would produce lower figures. Higher summer temperatures increase cooling energy costs, affect comfort in poorly insulated or south-facing properties, and can accelerate shrinkage in clay soils beneath foundations. Properties built before 1980 without cavity wall insulation are typically most affected.

Air quality at GU52 0AP 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 GU52 0AP as Fluvial Sands And Gravels, 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 GU52 0AP 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 Hart and is updated as new official datasets are published.

Hart has a rural and commuter-belt setting with villages, woodland and river valleys and experiences cool, wet winters and warm summers, shaped by lowland terrain and green cover.

Environment Agency flood zone data shows very low flood risk for GU52 0AP in Hart. 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.

Practical check: 32 hot days are projected (UKCP18 50th percentile, 2021-2040 average under RCP8.5) - check which rooms face south or west and whether the property has cross-ventilation or external shading. These are postcode-level indicators - conditions vary between individual properties.