— ACRERIGHT AREA REPORT · POSTCODE SECTOR
Home › Hillingdon › HA4 9 · postcode sector
10,596 people · median £550,000 · Hillingdon
Fast broadbandGood for schools
Hillingdon Council · Conservative-controlled 30/53 seats · 57% · OCD 2026
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Environment This postcode sector
Air quality
µg/m³ annual mean · DEFRA
Ground checks
Surface water 1-in-1001.5%
Flood zone1.5% of postcodes
Radonup to <1% of homes
Historic landfill1 site 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 buildings5
Conservation areas2
Green belt0%
Green spaces217
Historic England · OS Open Greenspace
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