Radon Risk in Surrey

Last reviewed: March 2026 · Data: BGS Indicative Atlas v3.

59 postcode districts · 2 classified High or above · Average risk class: 1.3 / 5

Radon is a naturally occurring radioactive gas and the second largest cause of lung cancer in the UK. Risk varies significantly by location — the areas below show how Surrey compares. 2 districts in Surrey are classified High risk or above — testing is strongly recommended in these areas.

All Districts in Surrey

District Risk Level % Homes
CR3 High 3–5%
CR6 High 3–5%
GU1 Moderate 1–3%
GU9 Moderate 1–3%
KT17 Moderate 1–3%
KT18 Moderate 1–3%
KT20 Moderate 1–3%
KT21 Moderate 1–3%
KT22 Moderate 1–3%
KT23 Moderate 1–3%
KT24 Moderate 1–3%
RH1 Moderate 1–3%
RH4 Moderate 1–3%
RH8 Moderate 1–3%
RH9 Moderate 1–3%
SM7 Moderate 1–3%
GU10 Low <1%
GU12 Low <1%
GU15 Low <1%
GU16 Low <1%
GU18 Low <1%
GU19 Low <1%
GU2 Low <1%
GU20 Low <1%
GU21 Low <1%
GU22 Low <1%
GU23 Low <1%
GU24 Low <1%
GU25 Low <1%
GU26 Low <1%
GU27 Low <1%
GU3 Low <1%
GU4 Low <1%
GU5 Low <1%
GU6 Low <1%
GU7 Low <1%
GU8 Low <1%
GU95 Low <1%
KT10 Low <1%
KT11 Low <1%
KT12 Low <1%
KT13 Low <1%
KT14 Low <1%
KT15 Low <1%
KT16 Low <1%
KT19 Low <1%
KT7 Low <1%
KT8 Low <1%
RH2 Low <1%
RH3 Low <1%
RH5 Low <1%
RH6 Low <1%
RH7 Low <1%
TW15 Low <1%
TW16 Low <1%
TW17 Low <1%
TW18 Low <1%
TW19 Low <1%
TW20 Low <1%

Get a Radon Test for Surrey

The only way to know your home's radon level is to test. Radon levels in Surrey are classified as Low — a test takes 3 months and costs around £29.

UKRadon Postal Test Kit
From ~£29 · 3-month detector Airthings Corentium Home (Amazon UK)
~£99 · Digital · Ongoing monitoring

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