Pen-y-waun is a Grade II listed building in the Caerphilly local planning authority area, Wales. First listed on 23 February 2001. Farmhouse.
Pen-y-waun
- WRENN ID
- fading-dormer-storm
- Grade
- II
- Local Planning Authority
- Caerphilly
- Constituency
- Caerphilly MP: Chris Evans (Lab)
- Country
- Wales
- Date first listed
- 23 February 2001
- Type
- Farmhouse
- Address
- Pen-y-waun, Nelson
- OS grid reference
- ST 124 945
- Coordinates
- 51.64264, -3.26695
- Source
- Cadw listing
Description
Pen-y-waun is a small farmhouse with a double-depth plan, featuring two storeys at the front and a single storey with an attic at the rear. It is constructed from narrow coursed stone rubble, topped with a Welsh slate roof at the front and stone tiles at the rear, and has corniced end stacks. The symmetrical front facade includes a three-window range of margin-glazed and horned sash windows with stone tile voussoirs. There is a central moulded arched doorway with a panelled soffit and a fanlight that has radial glazing bars.
At the rear, the roof slopes down lower, with a single 20th-century window on the left and an outshut on the right that features an attached tall yellow brick chimney. To the left of the house, separated by a rear courtyard wall, is a small byre or stable unit that shares the same roofline. This unit has two cambered-headed doorways with stable doors and a loft opening above, along with a lower extension. A lean-to structure fills the space between the byre and the farmhouse, obscuring rear windows at two levels: a four-light small-pane casement window above and a three-light window with a segmental arched head below, where the middle light is blocked. There is also a wide doorway with a boarded door and a dripmould.
Local climate
Pen-y-waun 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 85% of listed buildings.
It experiences an average of 33 freeze-thaw cycles a year, fewer than 53% of listed buildings. Of these, 14 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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