Agricultural range 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. Agricultural building.
Agricultural range at Plas Llandecwyn
- WRENN ID
- tilted-fireplace-ash
- 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
- Agricultural building
- Address
- Agricultural range at Plas Llandecwyn, Talsarnau, Gwynedd
- OS grid reference
- SH 632 373
- Coordinates
- 52.91623, -4.03555
- Source
- Cadw listing
Description
The agricultural range at Plas Llandecwyn is a linear structure built in coursed rubble masonry, featuring large stones used in the construction as well as for the quoins and lintels. It is oriented northwest to southeast, with the main elevation facing the house to the northeast. The roof is asymmetric, covered with slate and topped with rough stone copings at the northwest gable. A tall stone stack is located at the southeast end, complete with dripstones and capping.
On the northeast wall, there are two boarded doors and a small four-paned window situated under the eaves to the left (southeast). The northwest gable includes another doorway, with a four-paned window to the left, while the opposite gable apex features a six-pane window. Additionally, there is a narrow ventilation slit in the rear (southwest) wall.
The interior was not inspected during the survey.
Local climate
Agricultural range 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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