Pen-Twyn including attached Barn is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 14 August 1995. House, barn.
Pen-Twyn including attached Barn
- WRENN ID
- south-hinge-hazel
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 14 August 1995
- Type
- House, barn
- Address
- Pen-Twyn including attached Barn, Genffordd, Talgarth, Powys
- OS grid reference
- SO 168 312
- Coordinates
- 51.97337, -3.21194
- Source
- Cadw listing
Description
Pen-Twyn, which includes an attached barn, is a Grade II listed building. It features colourwashed rubble stonework with a stone slate roof on the barn and a slate roof on the farmhouse. The farmhouse has a central part-glazed door beneath a gabled canopy, flanked by two light 19th-century windows. There is a door leading to a passage and large cart doors for the farm building, which has been extended in rubble to create a lean-to with one door at the front and one at the end.
The barn consists of three bays and has cart doors at both the front and back in the bay closest to the house. It also features triangular vents in the gable end and at the rear.
Originally, entry to the farmhouse was at the side of the stack from the cross passage. The hall contains chamfered beams on the cross beam, likely indicating the original position of a post and panel partition that has been moved back, possibly during the rebuilding of the stack. The inner room is raised by one step. An added rear kitchen includes a gable stack with a side bread oven, and there is a blocked window on the northeast side with seats in the splayed reveals.
Local climate
Pen-Twyn including attached Barn sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 82% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 68% of listed buildings.
It experiences an average of 52 freeze-thaw cycles a year, more than 93% of listed buildings. Of these, 29 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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