Castell-du is a Grade II listed building in the Ceredigion local planning authority area, Wales. First listed on 20 December 1996. House.
Castell-du
- WRENN ID
- tenth-moulding-nightshade
- Grade
- II
- Local Planning Authority
- Ceredigion
- Constituency
- Ceredigion Preseli MP: Ben Lake (PC)
- Country
- Wales
- Date first listed
- 20 December 1996
- Type
- House
- Address
- Castell-du, Llanwnnen, Lampeter
- OS grid reference
- SN 531 468
- Coordinates
- 52.10058, -4.14587
- Source
- Cadw listing
Description
Castell-du is a two-storey building constructed from whitewashed roughcast rubble stone, topped with slate hipped roofs and featuring roughcast end stacks. The front range has three windows and deep flat eaves, with 12-pane hornless sash windows set on stone sills. The central door, which is from the 20th century, includes an overlight, and there are signs of a porch that has been removed. The west wall is windowless.
To the northeast, there is a large whitewashed rear wing that has a massive external stack on the north end, which is stepped back three times on the right and stepped out once on the left. The ground floor of this wing features a 12-pane sash window on the left and a 20th-century window on the right. The west side has a six-panel door in a lean-to porch at the right angle, with a 20th-century window on each floor to the left. The east side includes a stair-light on the left and a 12-pane sash window on each floor to the right.
Inside, the main southeast and southwest rooms have six-panel doors and shutters. The center hall features a fanlight above the north end door, leading to a stair hall that is set off to the right in the rear wing. The dog-leg stair has stick balusters, turned newels, and a ramped rail. The fireplace in the rear wing is said to have a large covered beam.
Local climate
Castell-du sits in one of the wettest parts of the UK, with an average of 1,280 mm of rain a year. This makes it wetter than 94% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 89% of listed buildings.
It experiences an average of 39 freeze-thaw cycles a year, more than 74% of listed buildings. Of these, 20 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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