Ysgubor Degwm is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 5 May 1992. Bridge.
Ysgubor Degwm
- WRENN ID
- errant-gravel-amber
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 5 May 1992
- Type
- Bridge
- Address
- Ysgubor Degwm, Penarth, Pwllheli, Llanystumdwy
- OS grid reference
- SH 422 377
- Coordinates
- 52.9137, -4.3469
- Source
- Cadw listing
Description
Ysgubor Degwm is a substantial agricultural building made of rubble, topped with a slate roof. It consists of a barn on the right and a cowshed on the left. The barn features slit ventilators that are internally glazed, along with a central entrance that has a camber head and modern red brick voussoirs inscribed with '1733 LP'. This entrance is now filled in with a painted timber screen and doors. The lofted cowhouse has cambered brick relieving arches, which may indicate that it was once a cartshed that has been altered. The rear of the barn appears to have had lean-tos added in the past, as shown by joist holes below the eaves. Currently, there is a lean-to at the eastern end, along with rooflights, two raised dormers, and an additional dormer featuring a cat-slide roof.
The barn has eight bays and collar trusses, with the trusses on the right having added bolted ties. One truss has been replaced, and there are splayed vents present. A full-height rubble wall separates the barn from the three-bay cowshed, which was formerly lofted. Belt drives are still retained at the right-hand end, although they were not visible during the inspection.
Local climate
Ysgubor Degwm sits in one of the wettest parts of the UK, with an average of 1,670 mm of rain a year. This makes it wetter than 99% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.
It experiences an average of 4 freeze-thaw cycles a year, fewer than 98% of listed buildings. Of these, 1 follows 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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