Barn at Llwynmaddy is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 20 June 1995. Barn.
Barn at Llwynmaddy
- WRENN ID
- gaunt-thatch-candle
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 20 June 1995
- Type
- Barn
- Address
- Barn at Llwynmaddy, Ffordd-Las, Llanigon, Powys
- OS grid reference
- SO 211 388
- Coordinates
- 52.04255, -3.15146
- Source
- Cadw listing
Description
The barn at Llwynmaddy is a substantial structure built from rubble and now features a corrugated roof. Located uphill, the cartshed has a pair of segmental dressed stone arches with keystones. The barn doors are currently missing. The cowhouse includes three boarded doors that face the farmyard and two additional doors at the rear that serve the feed and muck passages. The 8-bay barn is supported by queen-strut collared trusses with cambered ties.
Local climate
Barn at Llwynmaddy 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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