Ice house to Plas Ystrad, Coed y Plas is a Grade II listed building in the Carmarthenshire local planning authority area, Wales. First listed on 28 November 2003. Icehouse.

Ice house to Plas Ystrad, Coed y Plas

WRENN ID
fossil-truss-poplar
Grade
II
Local Planning Authority
Carmarthenshire
Constituency
Caerfyrddin MP: Ann Davies (PC)
Country
Wales
Date first listed
28 November 2003
Type
Icehouse
Address
Ice house to Plas Ystrad, Coed y Plas, Johnstown, Carmarthen
OS grid reference
SN 398 189
Coordinates
51.84591, -4.32696
Source
Cadw listing

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

Description

The ice house at Plas Ystrad, Coed y Plas, is built into a hillside and features steps leading down to a damaged low door with a brick arch. There is a rendered segmental arched tunnel that leads to a second door, which opens into a circular ice chamber with a dome-shaped brick roof. The interior is circular and showcases a finely crafted stone domed roof.

Local climate

Ice house to Plas Ystrad, Coed y Plas sits in one of the wettest parts of the UK, with an average of 1,320 mm of rain a year. This makes it wetter than 95% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.

It experiences an average of 21 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 8 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
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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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