Barn at Llwynywormwood is a Grade II listed building in the Carmarthenshire local planning authority area, Wales. First listed on 30 September 1999. Barn. 1 related planning application.
Barn at Llwynywormwood
- WRENN ID
- sunken-corbel-bistre
- Grade
- II
- Local Planning Authority
- Carmarthenshire
- Constituency
- Caerfyrddin MP: Ann Davies (PC)
- Country
- Wales
- Date first listed
- 30 September 1999
- Type
- Barn
- Address
- Barn at Llwynywormwood, Llandovery, Myddfai, SA20 0NQ
- OS grid reference
- SN 770 315
- Coordinates
- 51.9689, -3.7915
- Source
- Cadw listing
Description
The barn at Llwynywormwood is a Grade II listed structure built from rubble stone and topped with a hipped slate roof, showing traces of former whitewash. It is a very long single range featuring two large barn entries, each with timber lintels and boarded double doors, and opposed doors at the rear. There are six vent loops, with two located in the center and two on the far side of each entry, while the end walls have three vent loops.
Inside, the barn boasts a fine undivided space with a triple purlin roof supported by ten pegged roof-trusses of the tie-beam and collar type.
Local climate
Barn at Llwynywormwood sits in one of the wettest parts of the UK, with an average of 1,390 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.
It experiences an average of 43 freeze-thaw cycles a year, more than 84% of listed buildings. Of these, 23 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- No sale records on file
- Related listed building consents — 1 application
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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