Silurian House is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 16 December 1976. House. 2 related planning applications.
Silurian House
- WRENN ID
- final-brick-wax
- 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
- Silurian House, 4 the Bulwark, Powys, LD3 7LB
- OS grid reference
- SO 046 284
- Coordinates
- 51.94666, -3.38938
- Source
- Cadw listing
Description
Silurian House is a two-storey building with a stuccoed front facing The Bulwark, featuring three windows. It has a steeply pitched slate roof with projecting eaves. The first floor includes sash windows in plain openings, with a central 16-pane window and 20-pane windows on either side, each five panes wide. The ground floor has a central doorway with a two-panelled door, flanked by modern shop fronts.
At the rear, there is a one-storey wing with an attic located on Lion Street. Inside, beyond the central doorway, there is a vestibule with fielded panelling up to the dado on the right side and an eight-panelled door. The building features an 18th-century staircase with turned balusters, and the first floor has ceiling beams that are stop-chamfered.
Local climate
Silurian House 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 — 2 applications
- 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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