Former Barn at Penmyarth is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 21 October 1998. Barn.

Former Barn at Penmyarth

WRENN ID
tenth-bonework-ochre
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
21 October 1998
Type
Barn
Address
Former Barn at Penmyarth, Llanfihangel Cwmdu with Bwlch and Cathedine, Powys
OS grid reference
SO 187 200
Coordinates
51.87289, -3.18176
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The former barn at Penmyarth is a one-storey structure built of rubble sandstone, topped with a stone tile roof and corrugated iron on the rear slope. On the south side, there is a full-height doorway that once served as a cart passage, which is offset to the right and features a raking canopy along with 19th-century double boarded and ribbed doors. To the right of this doorway, there is a tall narrow breather, while to the left, there is a 4-light Gothick window with a two-centred head, intersecting tracery, and a brick surround, likely salvaged from another building on the estate and inserted in the later 19th century. The right gable end has triangular breathers. Attached to the left side is the remains of a walled garden. At the rear, there is another full-height cart passage doorway with boarded doors and a similar raking canopy as the front. To the left of this doorway is a small opening, and to the right, there is an inserted full-height opening. The building was not inspected at the time of the survey in August 1997.

Local climate

Former Barn at Penmyarth sits in a wetter-than-average part of the UK, with an average of 1,100 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 74% of listed buildings.

It experiences an average of 54 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 30 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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  • 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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Nearby listed buildings

  1. Penmyarth Grade II 45 m
  2. Stable and Carriage House at Penmyarth Grade II 83 m
  3. Penmyarth Park Chapel Grade II 190 m
  4. Towerwood Kennels Grade II 360 m
  5. North Lodge aka Glanusk Lodge Grade II 390 m
  6. 1 Pont-y-bryn-hurt Grade II 484 m
  7. 2 Pont-y-bryn-hurt Grade II 490 m
  8. Tower Lodge and Glanusk Bridge (partly in Llanfihangel Cwmdu with Bwlch and Cathedine community) Grade II* 508 m
  9. 3 Pont-y-bryn-hurt Grade II 516 m
  10. 4 Pont-y-bryn-hurt Grade II 523 m