Cottage at Plas Llandecwyn is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 30 December 2004. Cottage.
Cottage at Plas Llandecwyn
- WRENN ID
- unlit-tin-wagtail
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 30 December 2004
- Type
- Cottage
- Address
- Cottage at Plas Llandecwyn, Talsarnau, Gwynedd
- OS grid reference
- SH 632 373
- Coordinates
- 52.91613, -4.03569
- Source
- Cadw listing
Description
The cottage at Plas Llandecwyn is a small lofted structure built from coursed rubble masonry, incorporating large stones as lintels. It features a modern slate roof with stone copings, roof lights, and a hipped gable dormer on the rear pitch. The front (northwest) elevation has a boarded door flanked by small recessed timber casements. Access to the loft doorway is through the left (northeast) gable, which is reached by an external flight of stone steps. The rear wall includes a single small light, while the dormer has an 8-pane light with slate hung cheeks. On the right (southwest) gable, there is a large raking buttress made of coursed rubble, above which is a single paned light in the gable apex. The interior was not inspected during the survey.
Local climate
Cottage at Plas Llandecwyn sits in one of the wettest parts of the UK, with an average of 1,450 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.
It experiences an average of 36 freeze-thaw cycles a year, more than 60% of listed buildings. Of these, 18 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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