Abercynafon farmhouse and attached farm range is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 17 December 1998. Farmhouse.
Abercynafon farmhouse and attached farm range
- WRENN ID
- north-keystone-ridge
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 17 December 1998
- Type
- Farmhouse
- Address
- Abercynafon farmhouse and attached farm range, Glyn Collwn, Talybont-On-Usk, Powys
- OS grid reference
- SO 080 175
- Coordinates
- 51.84861, -3.33633
- Source
- Cadw listing
Description
Abercynafon is a farmhouse that features rubble walls which were once lime-rendered and painted, topped with a mostly corrugated roof, although some Welsh slates are visible. The farmhouse has three openings at the first floor level and two covered openings at the ground floor, all framed by timber lintels. These are positioned on either side of a central gabled porch that has stone tiles and large stone quoins.
The attached farm range is constructed from rubble that was previously limewashed, with dressed and tooled stone dressings and a Welsh slate roof. On the left side, there are two wide basket-arched cart shed bays, separated by a column, with two circular pitching eyes above. To the right is the stable, which features a central doorway with a stable door, flanked by metal-framed eight-pane windows with stone sills, although the left side has been altered. All these openings are set under cambered arches, and there is a large rectangular loft opening above.
Inside the farmhouse, the layout originally included a cross passage plan with a rear outshut. It has now been converted into one main room that includes a bricked-in open fireplace on the left, with a staircase beside it. The room features four stop-chamfered cross beams and a small fireplace in the right wall, along with the rear outshut. The roof structure consists of collar and tie beams with three rows of trenched purlins, while the attached range has a roof supported by kingposts and struts.
Local climate
Abercynafon farmhouse and attached farm range 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 80% of listed buildings.
It experiences an average of 54 freeze-thaw cycles a year, more than 95% of listed buildings. Of these, 30 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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