SW Roundhouse at Roundhouse Farm is a Grade II* listed building in the Blaenau Gwent local planning authority area, Wales. First listed on 29 June 1950. House - terrace.

SW Roundhouse at Roundhouse Farm

WRENN ID
eternal-glass-linden
Grade
II*
Local Planning Authority
Blaenau Gwent
Constituency
Blaenau Gwent and Rhymney MP: Nick Smith (Lab)
Country
Wales
Date first listed
29 June 1950
Type
House - terrace
Address
SW Roundhouse at Roundhouse Farm, Nantyglo, Nantyglo and Blaina
OS grid reference
SO 189 101
Coordinates
51.78446, -3.17687
Source
Cadw listing

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

Description

The SW Roundhouse at Roundhouse Farm is a circular tower built from rubble, featuring a slightly battered base with walls approximately 1.2 metres thick. The structure is semi-ruinous, especially on the northwest side. It originally had three storeys but now stands at two. The tower has narrow rectangular windows, some of which are fitted with iron grilles, along with stone sills and lintels. The doorway is oriented away from the farmyard. Inside, the building retains a cellar and part of a stone stair that curves around the inner wall.

Local climate

SW Roundhouse at Roundhouse Farm sits in a wetter-than-average part of the UK, with an average of 1,120 mm of rain a year. This makes it wetter than 88% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 78% of listed buildings.

It experiences an average of 51 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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  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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