St Eunys Well is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 4 October 2005. Holy well. 3 related planning applications.

St Eunys Well

WRENN ID
gentle-foundation-fen
Grade
II
Local Planning Authority
Cornwall
Constituency
Camborne and Redruth MP: Perran Moon (Lab)
Country
England
Date first listed
4 October 2005
Type
Holy well
Address
St Eunys Well, Carn Brea
OS grid reference
SW 689 413
Coordinates
50.22662, -5.2401
Source
Historic England listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This is a holy well of medieval origin, located at Carn Brea. The well is defined by large granite stones, which are somewhat displaced and overgrown, and enclose the well beside a stream. Tradition links the well to St Euny, a Celtic missionary who arrived in Cornwall in the 7th century. The well has been associated with the saint since that time.

Local climate

St Eunys Well receives an average of 870 mm of rain a year. This makes it wetter than 62% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% of listed buildings.

It experiences an average of 5 freeze-thaw cycles a year, fewer than 97% of listed buildings. Of these, 2 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 9 transactions since 2006
  • Related listed building consents — 3 applications
  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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Nearby listed buildings

  1. Trelowan Grade II 147 m
  2. Church of St Euny Grade II* 148 m
  3. Lychgate to Church of St Euny Grade II 158 m
  4. House Formerly Known As the Princes Plume Public House Grade II 176 m
  5. The Former Rectory Grade II 183 m
  6. The Glebe Grade II 197 m
  7. The Cottage [Barncoose Tollhouse] Grade II 537 m
  8. Carn Brea Castle Grade II 578 m
  9. Parkhenver Grade II 650 m
  10. Pump Engine House on Site of Wheal Uny Mine at SW 695 408 Grade II 734 m