Clos is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 26 August 2005. Farmhouse.

Clos

WRENN ID
fallen-stone-primrose
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
26 August 2005
Type
Farmhouse
Address
Clos, Cwmdwr, Llywel, Powys
OS grid reference
SN 847 314
Coordinates
51.96913, -3.67929
Source
Cadw listing

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

Description

Clos is a farmhouse featuring white painted render and an imitation slate steep roof with a rendered central chimney. The building is two storeys high and has two 9-pane windows located under the eaves, one to the left and one to the right of the centre. On the ground floor, there is a 12-pane horned sash window with a timber lintel beneath the left window, and a boarded door to the left of centre, aligned with the chimney, also under a timber lintel. To the right of the left window, there is another 12-pane horned sash window with stone voussoirs. The farmhouse has rock-faced stone sills. The right end wall is rendered and includes a 12-pane window on the ground floor, while the left end wall is also rendered and features a door. There is no outshut at the rear. The interior has not been inspected.

Local climate

Clos sits in one of the wettest parts of the UK, with an average of 1,350 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 89% of listed buildings.

It experiences an average of 48 freeze-thaw cycles a year, more than 89% 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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  • 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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Nearby listed buildings

  1. Milestone on A40 W of Llywel Grade II 608 m
  2. Milestone on A40 E of Halfway Grade II 949 m
  3. Maesgwyn Grade II 1.7 km
  4. Boundary stone on bridge Grade II 2.3 km
  5. Former school in Llywel churchyard Grade II 2.6 km
  6. Church of Saint David Grade I 2.6 km
  7. Gatepiers and gate on E side of Llywel churchyard Grade II 2.6 km
  8. Pont Cwmwysg Grade II 3.1 km
  9. Cefnarthen Chapel Grade II* 3.7 km
  10. Former National School and National School House Grade II 3.8 km