Ffos-y-maen, including attached former byre is a Grade II listed building in the Carmarthenshire local planning authority area, Wales. First listed on 5 September 2002. Farmhouse.

Ffos-y-maen, including attached former byre

WRENN ID
winding-lancet-nightshade
Grade
II
Local Planning Authority
Carmarthenshire
Constituency
Caerfyrddin MP: Ann Davies (PC)
Country
Wales
Date first listed
5 September 2002
Type
Farmhouse
Address
Ffos-y-maen, including attached former byre, Llanpumsaint
OS grid reference
SN 416 278
Coordinates
51.92672, -4.30422
Source
Cadw listing

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

Description

Ffos-y-maen is a 2-storey, 3-window farmhouse built from limewashed rubble stone and topped with a slate roof. It features a 19th-century brick stack on the right and a replaced brick stack on the left. The openings are offset to the right and are not evenly spaced, with segmental heads in the lower storey. The central doorway has a replaced door, while the upper storey contains late 19th-century 4-pane horned sash windows in enlarged openings with sills, positioned beneath the eaves. Attached to the left gable end is a rubble-stone byre with a slate roof, which includes three doorways with boarded doors under wooden lintels, along with a fourth doorway in a blockwork extension at the left end. The building has not been inspected.

Local climate

Ffos-y-maen, including attached former byre sits in one of the wettest parts of the UK, with an average of 1,270 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 93% of listed buildings.

It experiences an average of 30 freeze-thaw cycles a year, fewer than 64% of listed buildings. Of these, 14 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
  • No related consent applications matched
  • 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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