Mainstone

34 sales in the last 12 months · median £408,000 · Test Valley

High wellbeingAmong the least deprived

Test Valley Council · Conservative-controlled 25/43 seats · 58% · OCD 2026

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Environment This neighbourhood

NO₂

8.1

— WHO guide

PM2.5

6.3

— WHO guide

µg/m³ annual mean · DEFRA

Surface water 1-in-1000%

Flood zone8.3% of postcodes

RadonAffected Area (up to 3–5%)

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 buildings93

Conservation areas1

Green belt0%

Green spaces2,219

Historic England · OS Open Greenspace

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