Boundary wall running north from Porth Mawr Gate-house to Pen-y-dre Lodge is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 13 June 1978. Boundary wall.
Boundary wall running north from Porth Mawr Gate-house to Pen-y-dre Lodge
- WRENN ID
- odd-bailey-swallow
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 13 June 1978
- Type
- Boundary wall
- Address
- Boundary wall running north from Porth Mawr Gate-house to Pen-y-dre Lodge, Crickhowell, Powys
- OS grid reference
- SO 217 186
- Coordinates
- 51.86054, -3.13753
- Source
- Cadw listing
Description
The boundary wall running north from Porth Mawr Gatehouse to Pen-y-Dre Lodge is a Grade II listed structure. It features a crenellated parapet that steps down at varying levels beyond the gateway and curves around to the northwest, opposite Rectory Road. The wall has plain cappings, feathered aprons to the crenels, and a plinth. At the northwest end, the battlemented parapet ends, and the wall slopes down towards Pen-y-Dre Lodge. There are boarded door openings, including the former Postern Gate located to the right of the Gatehouse.
Just inside the wall at the southern end, there is an Italian stone pine tree, which is said to be one of the finest in the country. Additionally, there is a subterranean vault located behind the wall at the northern end.
Local climate
Boundary wall running north from Porth Mawr Gate-house to Pen-y-dre Lodge sits in a wetter-than-average part of the UK, with an average of 1,020 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 71% of listed buildings.
It experiences an average of 50 freeze-thaw cycles a year, more than 92% 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
- 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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