Tyn y Waun Farmhouse is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 31 July 1995. Farmhouse.

Tyn y Waun Farmhouse

WRENN ID
muffled-balcony-indigo
Grade
II
Local Planning Authority
Powys
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
31 July 1995
Type
Farmhouse
Address
Tyn y Waun Farmhouse, Nant Caethon, Rhayader
OS grid reference
SN 949 674
Coordinates
52.29543, -3.54246
Source
Cadw listing

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

Description

Tyn y Waun Farmhouse is a two-storey house with a rendered exterior and a slate roof. On the left side, there is a very large square stone chimney with an oversailing top course, while on the right side, there is a rectangular stone chimney. The house features two windows on each floor, although they have modern glazing.

Attached to the farmhouse is a barn that is timber-framed and covered with weatherboarding, also topped with a slate roof that has eaves lower than those of the house. To the right, there is a brick-fronted entrance to the house, which includes a door and a window. The barn has a gabled dormer loading door, three doorways, and a higher loading door on the left side. The ground slopes to the left, where the left end of the barn is two storeys high, providing animal accommodation at the lower level. The gable apex of this section is weatherboarded, while the lower level is made of stone and features a doorway.

Inside the barn, the loft is supported by heavily built framing, and at least one truss has curved principal rafters.

Local climate

Tyn y Waun Farmhouse sits in a wetter-than-average part of the UK, with an average of 1,160 mm of rain a year. This makes it wetter than 89% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 81% 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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  • Detailed attributes — period, style, materials, features
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  • 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. Attached Barn to Tyn y Waun Farmhouse Grade II 14 m
  2. Treheslog Farmhouse Grade II 1.4 km
  3. Milestone on Mountain Road to Aberystwyth Grade II 1.4 km
  4. Church of St Bride Grade II 1.9 km
  5. (3) Group of Houses Grade II 1.9 km
  6. (2) Group of Houses Grade II 1.9 km
  7. (1) Group of Houses Grade II 1.9 km
  8. Frondorddu Farmhouse, including attached byre Grade II 2.0 km
  9. Tabernacle Chapel Grade II 2.1 km
  10. Old Police Station and Magistrates Court Grade II 2.1 km