TW18 1

111 sales in the last 12 months · median £490,000 · Spelthorne

Spelthorne Council · Liberal Democrat / Independent coalition 17/39 seats · 44% · OCD 2026

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Environment This postcode sector

NO₂

14.2

— WHO guide

PM2.5

7.6

— WHO guide

µg/m³ annual mean · DEFRA

Surface water 1-in-1000%

Flood zone49.3% of postcodes

Radonup to <1% of homes

Historic landfill14 sites within ~1 km

EA · UKHSA/BGS · Mining Remediation Authority — indicative, not a property search

Road & rail noise bands (≥55 / ≥65 dB Lden) are being added — not yet available for this area. They cover major sources only; "not mapped" ≠ "quiet".

Defra strategic noise mapping

Listed buildings22

Conservation areas1

Green belt49.7%

Green spaces100

Historic England · OS Open Greenspace

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