Treheslog Farmhouse is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 31 July 1995. House.
Treheslog Farmhouse
- WRENN ID
- muted-mortar-bistre
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 31 July 1995
- Type
- House
- Address
- Treheslog Farmhouse, Rhayader
- OS grid reference
- SN 943 687
- Coordinates
- 52.3068, -3.55157
- Source
- Cadw listing
Description
Treheslog Farmhouse is a 19th-century building located facing south. It is constructed of stone with a slate roof and features yellow brick dressings. The farmhouse is one and a half storeys high, with end chimneys made of yellow brick. It has three gabled dormers that contain horned 16-pane sash windows. The central doorway is topped with a gabled hood, and there are 16-pane sash windows on either side.
At the rear, there is an attached 17th-century house with an old slate roof and a square stone chimney at the end, which connects to the 19th-century farmhouse. The south side has modern openings, while the north side features two windows, one of which has hardwood with ovolo mouldings.
Inside, the ground floor consists of two rooms with longitudinal ovolo moulded beams. The partition between these rooms is covered at ground floor level, and the fireplace beam is also ovolo moulded. The upper floor has an exposed timber-framed partition with raking struts and panels made of wattle and daub.
Local climate
Treheslog Farmhouse sits in one of the wettest parts of the UK, with an average of 1,200 mm of rain a year. This makes it wetter than 91% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 84% of listed buildings.
It experiences an average of 54 freeze-thaw cycles a year, more than 95% of listed buildings. Of these, 33 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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