Blaen-y-Cwm is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 9 August 1996. Farmhouse.
Blaen-y-Cwm
- WRENN ID
- silver-hinge-weasel
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 9 August 1996
- Type
- Farmhouse
- Address
- Blaen-y-Cwm, Cwm Pennant, Llangynog
- OS grid reference
- SJ 017 269
- Coordinates
- 52.83124, -3.45993
- Source
- Cadw listing
Description
Blaen-y-Cwm is an L-shaped farmhouse dating from the 18th century, constructed of local quasi-dressed slate masonry, except for the south gable which has been rebuilt in brick and has lost its chimney. The roof is made of small slates, and there is a stone end-chimney on the east side. The entrance is located on the east side of the south wing, featuring a door to the right and a small-pane sash window to the left. There are two stone dormers with unequal heights through the eaves, one of which retains a small-pane sash window, though they are not aligned with the window and doorway below. The south elevation has a window below and a similar dormer above, which are also misaligned. The rear of the house has a former door and two windows.
A small stone-walled enclosure is located at the front of the property.
Inside, the main east/west range contains two rooms divided by a timber-framed partition. The eastern room features two cruck frames and intersecting chamfered beams that create four squares with chamfered joists that change direction. There is a large fireplace in the eastern room, with a stone staircase recessed into the wall to the right of the hearth.
In the south wing, a large moulded transverse beam supports two ovolo-moulded longitudinal beams with unchamfered joists, and there is a 19th-century wooden staircase. On the first floor of the south wing, there is a timber-framed partition above the heavy transverse beam, along with 19th-century partitioning.
Local climate
Blaen-y-Cwm sits in a wetter-than-average part of the UK, with an average of 1,120 mm of rain a year. This makes it wetter than 88% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 78% of listed buildings.
It experiences an average of 55 freeze-thaw cycles a year, more than 95% of listed buildings. Of these, 34 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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