Pen-yr-Allt is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 30 January 1968. House.
Pen-yr-Allt
- WRENN ID
- rusted-moat-barley
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 30 January 1968
- Type
- House
- Address
- Pen-yr-Allt, Llanddona
- OS grid reference
- SH 575 802
- Coordinates
- 53.30036, -4.13917
- Source
- Cadw listing
Description
Pen-yr-Allt is a two-storey house featuring three windows, constructed from rubble masonry and finished with a limewashed front. It has boulder foundations and includes a wing at right angles to the rear, along with a lean-to. The northern wing is grit rendered and has a sheeting roof. The main roof is covered with medium-sized slates and has fairly tall end chimneys that feature dripstones and capping. The house has fairly small windows with exposed frames, although the sashes have been renewed to include only central glazing bars. The entrance door consists of six sunk panels with small centre panels. A low stone wall encloses the front garden. The interior was not inspected during the survey.
Local climate
Pen-yr-Allt 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
- No related consent applications matched
- 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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