Pen-y-borfa fawr is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 5 November 1996. House.
Pen-y-borfa fawr
- WRENN ID
- ragged-bailey-bracken
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 5 November 1996
- Type
- House
- Address
- Pen-y-borfa fawr, Caersws
- OS grid reference
- SO 023 924
- Coordinates
- 52.521, -3.44086
- Source
- Cadw listing
Description
Pen-y-borfa fawr is a two-storey house with an attic, built from coursed squared greywacke rubble and topped with a slate roof. The building features three bays, with the central bay sharply gabled and a two-storey, one-bay rear wing. The front entrance has a central panelled door with a tall margin-glazed overlight, set deeply within panelled reveals. The windows are twelve-paned sashes set in openings with slightly cambered heads, while the attic gable includes a pointed-headed sash window with intersecting glazing bars. The eaves are wide and boxed, supported by brackets from a high corbelling course, and the central gable is adorned with cusped openwork bargeboards. Gable stacks are present on the roof. The rear wing is slate hung and also features twelve-paned sashes and a gable stack. The property was not accessible during the inspection in May 1996.
Local climate
Pen-y-borfa fawr sits in a wetter-than-average part of the UK, with an average of 1,090 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 78% of listed buildings.
It experiences an average of 48 freeze-thaw cycles a year, more than 90% of listed buildings. Of these, 28 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
- No related consent applications matched
- 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
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