Boundary Wall SE of Tretower Court is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 21 October 1998. Boundary wall.

Boundary Wall SE of Tretower Court

WRENN ID
frozen-baluster-willow
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
21 October 1998
Type
Boundary wall
Address
Boundary Wall SE of Tretower Court, Llanfihangel Cwmdu with Bwlch and Cathedine, Powys
OS grid reference
SO 186 211
Coordinates
51.88293, -3.18399
Source
Cadw listing

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

Description

The boundary wall located southeast of Tretower Court is made of rubble stone and stands approximately 2.5 meters high and 12 meters long. Near the northern end, there is a doorway featuring a two-centred arch with a continuous chamfer, which has a renewed boarded door. Above the doorway, there is a continuous ledge where the wall steps in. At the southern end, there is a modern wall attached to the boundary wall.

Local climate

Boundary Wall SE of Tretower Court sits in a wetter-than-average part of the UK, with an average of 1,100 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 74% of listed buildings.

It experiences an average of 54 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 30 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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  • 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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  2. Tretower Court Barn Grade II* 54 m
  3. Wall N of Tretower Court Grade II 79 m
  4. Wall N of Tretower Court Barn Grade II 86 m
  5. Ty Llys Grade II 131 m
  6. Church of St John the Evangelist Grade II 136 m
  7. Church Hall Grade II 158 m
  8. Tretower Castle Grade I 188 m
  9. Castle Cottage Grade II 200 m
  10. 2 Vine Tree Cottages Grade II 200 m