15 Castle Street is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 1 February 1988. House. 1 related planning application.
15 Castle Street
- WRENN ID
- hollow-lead-tallow
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 1 February 1988
- Type
- House
- Address
- 15 Castle Street, Hay, Powys, HR3 5DF
- OS grid reference
- SO 227 422
- Coordinates
- 52.07336, -3.12804
- Source
- Cadw listing
Description
15 Castle Street is a two-storey, two-window building of mainly coursed rubble construction. It likely dates to the 18th century. The front features a central doorway and is topped by a proprietary slate roof. A red brick chimney stack is located beside number 14, and another rubble stack with a brick cap projects from the left end. The windows are largely small-pane sashes, most with 12 panes, with a splayed bay window at number 14. Modern boarded doors are present. A fireman’s helmet is attached to the front of the adjacent building, The Old Fire Station. Cross ranges and modern additions extend to the rear. The interior of number 14 includes a stone-flagged entrance hall and a dog-leg staircase.
Local climate
15 Castle Street receives an average of 900 mm of rain a year. This makes it wetter than 67% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 54% of listed buildings.
It experiences an average of 52 freeze-thaw cycles a year, more than 93% of listed buildings. Of these, 29 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 1 transaction since 2019
- 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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