Farm Range at Gwernaffel Farm is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 16 March 1992. Farm range. 3 related planning applications.

Farm Range at Gwernaffel Farm

WRENN ID
guardian-gateway-briar
Grade
II
Local Planning Authority
Powys
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
16 March 1992
Type
Farm range
Address
Farm Range at Gwernaffel Farm, Whitton, LD7 1SE
OS grid reference
SO 267 706
Coordinates
52.3286, -3.07607
Source
Cadw listing

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

Description

The farm range at Gwernaffel Farm is an 18th-century building situated down a slope. It features a long structure that includes a two-bay barn, a lean-to feed store, cowhouses, and a stable with a loft above. The exterior is made of coursed rubble blocks and has slit ventilators. The central cowhouse loft is weatherboarded and topped with a tin roof, while there are plank doors and shutters. The right-hand rear section contains single-storey loose boxes beneath a catslide roof.

Inside, the building retains its original stalling, mangers, and hay-racks. The feed store end has tie beam trusses with diagonal braces. The first floor above the cowhouses features heavy timber-framed partitions, collar beam trusses, and queen and princess posts. The stable loft is supported by king-post trusses, with trenched purlins and pegged joints throughout.

This farm range is recognized as a good and unspoilt example of a late vernacular composite farm range. The barn area would have also been used for lambing, shearing, and storing fleeces. It holds group value with the farmhouse.

Local climate

Farm Range at Gwernaffel Farm receives an average of 900 mm of rain a year. This makes it wetter than 67% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 51% of listed buildings.

It experiences an average of 52 freeze-thaw cycles a year, more than 93% 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • No sale records on file
  • Related listed building consents — 3 applications
  • 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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