Dan-y-Castell is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 19 July 1963. House. 3 related planning applications.
Dan-y-Castell
- WRENN ID
- lesser-chapel-fen
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 19 July 1963
- Type
- House
- Address
- Dan-y-Castell, Crickhowell, Powys, NP8 1AP
- OS grid reference
- SO 216 182
- Coordinates
- 51.85704, -3.13867
- Source
- Cadw listing
Description
Dan-y-Castell is an early 18th-century, two-storey, three-bay house constructed of rubble with a slate roof. The roof has bracketed eaves and a band detail, and is topped by two rubble chimney stacks finished in brick. The front features 16-pane sash windows with glazing bars, each set beneath a labelled lintel. A fine, central 18th-century doorcase is distinguished by a pedimented design with a dentilled cornice and fluted frieze. It incorporates panelled pilasters framing an arched entrance with a recessed six-panel door and an unusual traceried fanlight.
Rubble end walls include casement and sash windows, with roughcast on the left gable. A one-storey and attic rubble extension projects to the left, also with a slate roof, boxed eaves, and a brick-capped chimney stack. A later, projecting dormer with casement windows has been added to this section. A lintel above a half-glazed door is inscribed "circa 1734, Ty Dan-y-Castell, 1934”. A lean-to is attached to the gable end.
A later, two-storey, splayed bay is set at the rear, featuring 12-pane sash windows and French windows. To the left, a lower, two-storey cross range exists, with earlier origins, and includes casement windows, an advanced rubble chimney breast, and a stairwell.
The interior of the cross range preserves feather stop chamfered spine beams with run-out stops and a contemporary fireplace, indicating 16th or 17th-century origins. The earlier house was, in the 17th century, the home of Sir John Herbert.
Local climate
Dan-y-Castell 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 2 transactions since 2021
- Related listed building consents — 3 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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