CM3 8

3,440 people · median £480,000 · Chelmsford

Chelmsford Council · Liberal Democrat-controlled 31/57 seats · 54% · OCD 2026

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Environment This postcode sector

NO₂

7.4

— WHO guide

PM2.5

6.8

— WHO guide

µg/m³ annual mean · DEFRA

Surface water 1-in-1000%

Flood zone0.8% of postcodes

Radonup to <1% of homes

Historic landfill2 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 buildings43

Conservation areas1

Green belt33.4%

Green spaces653

Historic England · OS Open Greenspace

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