12 Castle Street is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 16 December 1976. A Georgian House. 1 related planning application.
12 Castle Street
- WRENN ID
- graven-chimney-evening
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 16 December 1976
- Type
- House
- Period
- Georgian
- Address
- 12 Castle Street, Powys, LD3 9BU
- OS grid reference
- SO 044 287
- Coordinates
- 51.9489, -3.39231
- Source
- Cadw listing
Description
This building, located at 12 Castle Street, is a house with a symmetrical street facade featuring three storeys and three windows, constructed in stucco. It has a slate hipped roof and a moulded wood eaves cornice, along with a plinth. The windows are horned sash types, with square sash windows on the second floor, taller sash windows on the first floor, and wider windows in the end bays on the ground floor. The centre bay on the ground floor includes a round-headed pedimented doorcase with a moulded pediment adorned with dentils and fluted capped pilasters. The doorcase has fielded panelled reveals, a semi-circular fanlight with radiating tracery, and a six-panelled door with four fielded panels.
The rear elevation is pebble-dashed and features a two-window block that projects forward to the left, with small-pane sash windows and a modern porch. There have been some alterations on the ground floor for office use, but the building retains early 19th-century cornices, chimney pieces, and panelled doors. A cantilevered stone staircase with ogee-shaped treads supports a stair with a curved newel, although this is not accessible from the ground floor offices.
Local climate
12 Castle Street sits in one of the wettest parts of the UK, with an average of 1,260 mm of rain a year. This makes it wetter than 93% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 82% of listed buildings.
It experiences an average of 56 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
- Sale history — 2 transactions since 1995
- Related listed building consents — 1 application
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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