— ACRERIGHT AREA REPORT · POSTCODE SECTOR
Home › Windsor and Maidenhead › SL3 9 · postcode sector
6,233 people · median £475,000 · Windsor and Maidenhead
Windsor and Maidenhead Council · Liberal Democrat-controlled 21/41 seats · 51% · OCD 2026
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Environment This postcode sector
Air quality
µg/m³ annual mean · DEFRA
Ground checks
Surface water 1-in-1000%
Flood zone4.7% of postcodes
Radonup to 1–3% of homes
Historic landfill13 sites within ~1 km
EA · UKHSA/BGS · Mining Remediation Authority — indicative, not a property search
Transport noise (Defra)
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
Heritage & green space
Listed buildings47
Conservation areas2
Green belt76.8%
Green spaces200
Historic England · OS Open Greenspace
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