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— ACRERIGHT AREA REPORT · POSTCODE SECTOR
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HA1 4

100 sales in the last 12 months · median £512,500 · Harrow

Harrow Council · Conservative-controlled   42/55 seats · 76% · OCD 2026
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Environment This postcode sector

Air quality

NO₂
14.3
— WHO guide
10
PM2.5
7.8
— WHO guide
5
µg/m³ annual mean · DEFRA

Ground checks

Surface water 1-in-1002.4%
Flood zone0.3% of postcodes
Radonup to <1% of homes
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 buildings9
Conservation areas3
Green belt0%
Green spaces62
Historic England · OS Open Greenspace
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