Barn at Trefri Fawr is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 14 October 1994. Barn.
Barn at Trefri Fawr
- WRENN ID
- old-transept-blackthorn
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 14 October 1994
- Type
- Barn
- Address
- Barn at Trefri Fawr, Aberdyfi, Aberdovey, Gwynedd
- OS grid reference
- SN 632 970
- Coordinates
- 52.55408, -4.01868
- Source
- Cadw listing
Description
The barn at Trefri Fawr is a Grade II listed structure, partly built into the slope of the ground. It is constructed of grey-brown rubble and features a slate roof with raking gable parapets. A datestone on the building reads 'Elinor Jones, John Jones, 1738'.
The gable facing the house includes a loft door, while the south side has two doors: a smaller door on the left and a larger threshing door on the right, both of which have long voussoirs. There is also an inserted door on the east gable end. Inside, the barn has three roof trusses with a steep pitch and raking struts.
Local climate
Barn at Trefri Fawr sits in one of the wettest parts of the UK, with an average of 1,360 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 94% of listed buildings.
It experiences an average of 25 freeze-thaw cycles a year, fewer than 73% of listed buildings. Of these, 10 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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