The Corn Barn is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 27 June 1991. House.

The Corn Barn

WRENN ID
over-pilaster-river
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
27 June 1991
Type
House
Address
The Corn Barn, Llanspyddid, Glyn Tarell, Powys
OS grid reference
SO 010 281
Coordinates
51.94342, -3.44026
Source
Cadw listing

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

Description

The Corn Barn is a barn that has been converted into a house. It is constructed of painted rubble stone and features a slate roof that overhangs at the eaves. The roadside elevation includes off-centre double barn doors beneath a raised catslide roof. To the left, there is a small loop window, and to the right, a former door with a cambered brick head has been replaced with glazing. The right end wall has two loop windows above a lean-to cart-shed, which also has a broad cambered-headed cart-entry with a brick arch and double doors. A loft light is present in the left end gable. The rear of the building features an opposed barn entry, now glazed, with a lean-to on the left and a small window on the right. There are also modern skylights. The interior has not been inspected but is said to retain a collar-truss roof.

Local climate

The Corn Barn sits in one of the wettest parts of the UK, with an average of 1,260 mm of rain a year. This makes it wetter than 93% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 82% of listed buildings.

It experiences an average of 56 freeze-thaw cycles a year, more than 96% of listed buildings. Of these, 32 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
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  • 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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