YO16 4AF - Flood, Heat, Air & Subsidence Risk - Old Town

East Riding of Yorkshire, Old Town

YO16 4AF in Old Town has a Medium flood risk - EA NaFRA2 data records 6 properties in a flood risk zone. 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 Medium at PM2.5 6.4 μg/m³, above the WHO annual guideline of 5 μg/m³ (Defra UK-AIR). Ground conditions are Low risk, with Riverine Clay And Floodplain Sands And Gravel geology; shrink-swell risk is classed as improbable (BGS GeoSure).

• Flood: EA NaFRA2: 3 medium, 3 low flood risk properties in this postcode.
• Heat: Projected 16 days above 25°C per year, 2021-2040 average (Met Office UKCP18, 50th percentile under RCP8.5).
• Air quality: PM2.5 6.4 µg/m³ - above the WHO annual guideline of 5 µg/m³ (Defra UK-AIR).
• Ground: BGS data: Riverine Clay And Floodplain Sands And Gravel geology. Shrink-swell risk classed as improbable (British Geological Survey).
• Green space: 41% of addresses within 200m of green space - above the England median (ONS).

Flood risk at YO16 4AF is rated Medium, based on Environment Agency NaFRA2 modelling.

Air quality at YO16 4AF 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 YO16 4AF as Riverine Clay And Floodplain Sands And Gravel, 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 YO16 4AF 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 East Riding of Yorkshire and is updated as new official datasets are published.

East Riding of Yorkshire has a varied setting spanning chalk uplands, low-lying plains and a long coastline and experiences cool, wet winters and warm summers, shaped by elevation and maritime influence.

Environment Agency flood zone data places YO16 4AF in the medium flood risk band. EA NaFRA2 data shows 3 at medium risk, 3 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. Individual properties within YO16 4AF can differ - a formal flood risk search is recommended before any property transaction.

Practical check: EA data flags 6 properties at flood risk here - check whether the property is among them by comparing its position to the flood zone boundary. These are postcode-level indicators - conditions vary between individual properties.