— ACRERIGHT AREA REPORT · NEIGHBOURHOOD
Home › Hertsmere › Sunnybank · neighbourhood
1,312 people · median £405,000 · Hertsmere
Hertsmere Council · Labour / Liberal Democrat coalition 19/39 seats · 49% · OCD 2026
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Environment This neighbourhood
Air quality
µg/m³ annual mean · DEFRA
Ground checks
Surface water 1-in-1002.9%
Flood zone2.9% 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 buildings1
Conservation areas0
Green belt0%
Green spaces278
Historic England · OS Open Greenspace
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