Gwernvale Farmhouse is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 25 September 1986. Farmhouse.

Gwernvale Farmhouse

WRENN ID
fallen-niche-azure
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
25 September 1986
Type
Farmhouse
Address
Gwernvale Farmhouse, Crickhowell, Powys
OS grid reference
SO 214 195
Coordinates
51.86909, -3.14271
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Gwernvale Farmhouse is a two-storey building with three windows, featuring a very steeply pitched hipped slate roof and brick chimney stacks. The exterior includes end pilaster strips and lugged architraves around the sash windows, which have glazing bars. A central half-glazed porch with a pitched roof and timber gable adds to its character. There are sash windows on the first floor at the rear, and the west gable is finished with a gable end.

Inside, the farmhouse retains a 17th-century dog-leg staircase with intersecting turned banisters. An upstairs room is panelled to full height on three sides, complete with a moulded cornice. These interior features likely date back to the time when the estate was owned by the Proger family, who were known as strong Royalists and held positions in state under the Stuart monarchy. The roof timbers are later additions, possibly from the same period as the rendering.

Local climate

Gwernvale Farmhouse sits in a wetter-than-average part of the UK, with an average of 1,020 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 71% of listed buildings.

It experiences an average of 50 freeze-thaw cycles a year, more than 92% of listed buildings. Of these, 27 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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