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C.2 - Radon Affected Areas
The replies given on radon affected areas are based on Radon Potential data from the
British Geological Survey (BGS) and the Health Protection Agency (HPA). This data
indicates the probability of radon occurring in the property being searched.
These replies are intended to help the homebuyer decide whether a radon assessment
from the HPA might be required for an existing dwelling. The estimate is based on an
analysis of radon measurements in dwellings within the affected area.
A ‘Radon Affected Area’ is defined as where it is estimated that the radon concentration in
1% or more of homes exceeds the ‘Action Level’.
The reply indicates the type of action normally required for each level of risk.
C.3 - Radon Protection Measures
The replies given on level of radon protective measures are based on Radon Potential data
from the British Geological Survey (BGS) and the Health Protection Agency (HPA).
HP
Radon protective measures have been required to be installed for new dwellings or
extensions to existing dwellings since 1999. The need for protective measures is based on
estimates by both the HPA and BGS on the basis of a combined analysis of geological and
A measurement data.
It should be noted that in the case of new dwellings or extensions to existing ones, areas
where radon protection is required are those where it is estimated that the radon
concentration in 3% or more of homes exceeds the ‘Action Level’.
Section D - Enquiries Concerning Natural Perils
D.1- Flooding
1000
The replies given on areas of potential flooding from rivers and surface water are based on
data from Risk Management Solutions Inc., which models 1 in 75, 1 in 100 and 1 in
year risk.
af
risk
Where the area within 250 metres from the centre of the search is identified as potentially
fected by tidal flooding, data from Norwich Union is used to give a property specific flood
rating.
If
Flood
potential flooding is identified as a concern it is recommended that further investigation is
undertaken to obtain more detailed information, such as that contained in the Homecheck
report.
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