Lower Cwm Du is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 3 September 2004. Cottage.
Lower Cwm Du
- WRENN ID
- lost-pilaster-snow
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 3 September 2004
- Type
- Cottage
- Address
- Lower Cwm Du, Bwlch-Y-Sarnau, Abbey Cwmhir
- OS grid reference
- SO 037 745
- Coordinates
- 52.36037, -3.41446
- Source
- Cadw listing
Description
Lower Cwm Du is a 2-storey, 2-window cottage with a lobby entry, built from whitened rubble stone and topped with a slate roof. It features a brick roughcast stack on the left side. The windows on the lower storey have brick segmental heads and are 2-light iron-framed casements with small-pane Gothic glazing, which is typical of the Abbey Cwmhir Estate. The lower left window and the doorway at the left end are obscured by a later lean-to porch, and the entrance has a replacement door. The back of the cottage is blank.
Local climate
Lower Cwm Du sits in a wetter-than-average part of the UK, with an average of 1,110 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 79% of listed buildings.
It experiences an average of 51 freeze-thaw cycles a year, more than 93% of listed buildings. Of these, 31 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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