Llwyn-y-brain is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 5 November 1996. House.
Llwyn-y-brain
- WRENN ID
- narrow-eave-storm
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 5 November 1996
- Type
- House
- Address
- Llwyn-y-brain, Rhydlydan, Caersws
- OS grid reference
- SO 046 929
- Coordinates
- 52.52584, -3.40721
- Source
- Cadw listing
Description
Llwyn-y-brain is a building rendered over timber framing, featuring slate roofs, and dates back to an earlier phase evidenced by its cruck blades. It stands two storeys high with an attic. The main entrance is located on the north front, set within a modern gabled porch, directly opposite the primary stack. The cross wing shows signs of having been jettied on the first floor. The building includes various 19th and 20th-century timber windows, such as a segmental-headed stair window. The roof is hipped at the west end and has rebuilt brick stacks.
The earliest construction phase is indicated by a pair of cruck blades at the division of the house and the unconverted west bay, which are trenched for purlins, feature a butt-joint at the apex, and are notched for a diagonally set ridge. The frame is infilled with wattle and daub and is smoke blackened on its east face. The main range is now divided longitudinally, with the living room located on the south side. It features deeply chamfered twin spine beams and a large inglenook fireplace with a timber fire lintel, which has since been filled in. The northern third beyond the partition contains a passage and a stair, the latter featuring simple square newels with small reserved-ovolo arris mouldings and a tenoned handrail. On the first floor, on the south side of the principal stack, there is said to be a smoking cupboard, now boarded over. The cross wing also has deeply chamfered twin spine beams with ogee stops on both floors. The roof includes two tiers of purlins and small straight windbraces in the wing. Throughout the building, there are many 17th-century scratch-moulded boarded and panelled doors with original door furniture.
Local climate
Llwyn-y-brain sits in a wetter-than-average part of the UK, with an average of 1,090 mm of rain a year. This makes it wetter than 87% 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 48 freeze-thaw cycles a year, more than 90% of listed buildings. Of these, 28 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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