23a 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. House. 1 related planning application.
23a Castle Street
- WRENN ID
- turning-ledge-root
- 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
- Address
- 23a Castle Street, Powys, LD3 9DD
- OS grid reference
- SO 044 287
- Coordinates
- 51.94861, -3.39201
- Source
- Cadw listing
Description
Nos 23 and 23a Castle Street is a three-storey building featuring a six-window stucco front. It has a higher eaves level compared to the adjacent No 22 Castle Street. The facade includes bands at the eaves and at the second and first floor levels, with pilaster strips at the ends.
Number 23a has windows with slightly cambered heads, consisting of four small 2-light casements on the second floor and four 12-pane sash windows on the first floor. The ground floor features an early 20th-century shopfront with doorways paired to the center, framed by pilasters, a fascia, and a cornice.
Local climate
23a 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
- No sale records on file
- 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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