Barn/cowhouse block at Garth-fawr is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 25 October 2001. Barn, cowhouse.
Barn/cowhouse block at Garth-fawr
- WRENN ID
- ancient-window-vale
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 25 October 2001
- Type
- Barn, cowhouse
- Address
- Barn/cowhouse block at Garth-fawr, Llandeilo Graban, Painscastle
- OS grid reference
- SO 110 436
- Coordinates
- 52.08385, -3.29978
- Source
- Cadw listing
Description
The barn and cowhouse block at Garth-fawr is a Grade II listed structure, aligned roughly east to west, with the cowhouse range positioned at right angles to the east on the south side. The barn features a timber frame, with the front and rear partially clad in corrugated sheeting, while the end walls are constructed of stone. It has large opposing threshing doorways, and the roof is a mix of partially original stone slates and corrugated sheeting.
The cowhouse range is primarily made of stone and has an open front supported by jowelled posts. Its roof and front are also covered in corrugated sheeting. The cowhouse consists of three bays facing the yard, with a further bay at the north end that connects to the barn. It has central paired doors and wooden gates leading to the outer bays.
The barn comprises five bays, featuring roof trusses with tie-beams and raking struts. The threshing floor is flanked by dwarf stone walls, with posts and raking struts supporting the cross-framing. The cowhouse has roof trusses with cambered tie-beams and raking struts, along with a complex 19th-century diagonal truss at the junction where the range meets the barn. The front facing the yard includes jowelled posts, and the interior retains wooden feeding troughs and a hay rack.
Local climate
Barn/cowhouse block at Garth-fawr sits in a wetter-than-average part of the UK, with an average of 1,020 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 69% of listed buildings.
It experiences an average of 46 freeze-thaw cycles a year, more than 87% of listed buildings. Of these, 25 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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