Llwynglas is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 22 March 1993. Town house.
Llwynglas
- WRENN ID
- frozen-beam-yew
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 22 March 1993
- Type
- Town house
- Address
- Llwynglas, Cwm Nant Fyllon, Llanfyllin
- OS grid reference
- SJ 105 215
- Coordinates
- 52.78409, -3.32806
- Source
- Cadw listing
Description
Llwynglas is a timber-framed building set on a stone platform, positioned as the ground slopes to the right. It has a slate roof and the entrance front faces approximately northeast. The timber-framing features square panels that are three panels high. There are two small gabled dormers with small-pane casement glazing. The entrance doorway is offset to the right and has a gabled open porch. To the left of the door, there is a broad small-pane casement window, and to the right, a square small-pane window with a casement window above it, followed by another small-pane casement window. On the right side of the building, where the ground slopes down, there is a window at basement level made of brick and stone.
The left gable end is built into the slope and is constructed of rubble with a brick gable and a rectangular brick chimney. The right gable end is slate-hung and features a brick chimney at the left angle. At the rear, there is an outshot with rubble walling, and the timber-framing of the original rear wall is visible inside.
Local climate
Llwynglas sits in a wetter-than-average part of the UK, with an average of 960 mm of rain a year. This makes it wetter than 75% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 61% of listed buildings.
It experiences an average of 45 freeze-thaw cycles a year, more than 86% of listed buildings. Of these, 25 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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