Wellhouse by Hen Ysgol is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 28 May 2003. Wellhouse. 2 related planning applications.
Wellhouse by Hen Ysgol
- WRENN ID
- graven-pedestal-falcon
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 28 May 2003
- Type
- Wellhouse
- Address
- Wellhouse by Hen Ysgol, Llandegfan, Cwm Cadnant
- OS grid reference
- SH 566 740
- Coordinates
- 53.24447, -4.14955
- Source
- Cadw listing
Description
This late 19th-century wellhouse, located by Hen Ysgol, is designed in the Arts and Crafts style. It features raking walls made of snecked masonry, with large stones used as quoins. The wellhouse has slate wall plates and a slate roof that includes advanced eaves and verges supported by an exposed framework of pegged timbers. An inscription carved into the blades of the exposed trusses reads: "PARCHING SUMMER / HATH NO WARRANT / TO CONSUME THIS / CRYSTAL WELL." Additionally, across the tie beam, it states: "In loving memory of Richard Reynolds Rathbone / for the use of the parishioners of Llandegfan / This well and well house were given by his daughter / A D 1899." At the rear of the wellhouse, there is a circular brick well with modern capping. Inside, along the left inner wall, there is a shallow stone trough.
Local climate
Wellhouse by Hen Ysgol sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.
It experiences an average of 37 freeze-thaw cycles a year, more than 67% of listed buildings. Of these, 19 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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- No EPC on record for this property
- No sale records on file
- Related listed building consents — 2 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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