Garden wall and room at Trebinshwn is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 21 August 1998. Garden room, garden wall.
Garden wall and room at Trebinshwn
- WRENN ID
- hidden-arch-foxglove
- 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 August 1998
- Type
- Garden room, garden wall
- Address
- Garden wall and room at Trebinshwn, Llangors, Powys
- OS grid reference
- SO 136 241
- Coordinates
- 51.90886, -3.25683
- Source
- Cadw listing
Description
The garden wall and room at Trebinshwn date back to the 18th century. Behind the house, the wall serves as a high retaining wall for the garden, which is situated at a higher level. It features a flight of 11 steps leading up to the garden room. The wall curves to the left, enclosing a large rectangular plot that was once a vegetable garden for the house.
At the courtyard level, to the left of the steps, there is a round arched storage bay built into the bank. To the left of this bay is a square-headed ground floor entrance to the garden room, which has a multipane window above it. There is a second entrance to the garden room at the upper level from the garden, with the side wall forming part of the walled garden.
The main front of the garden room is roughly parallel to the main house and faces east. It features three cambered arched entrances, with the one closest to the house adorned with a shallow pediment. The garden wall is topped with flat coping. Inside the garden room, there is a small fireplace and a six-panelled staircase door.
Local climate
Garden wall and room at Trebinshwn sits in one of the wettest parts of the UK, with an average of 1,180 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 78% of listed buildings.
It experiences an average of 57 freeze-thaw cycles a year, more than 96% of listed buildings. Of these, 32 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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