Great House is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 14 August 1995. Demolished.
Great House
- WRENN ID
- first-clay-vale
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 14 August 1995
- Type
- Demolished
- Address
- Great House, Talgarth, Powys
- OS grid reference
- SO 154 338
- Coordinates
- 51.99642, -3.2331
- Source
- Cadw listing
Description
Great House is a large farmhouse from the early 19th century, though it has earlier origins. It is constructed of rubble stone with a slate roof and has three storeys with three symmetrical window bays. The central entrance features a beaded panel door with a margin glazed overlight above it. The windows are sixteen paned sashes set in openings with slightly cambered heads, while the second floor has 4 x 3 paned sashes. The eaves are boarded, and there is a gable stack on the left side and another stack on the rear pitch at the eastern end.
To the west, the main elevation continues with a single storey outbuilding that has been converted into separate accommodation. This outbuilding features a 20th-century canopy on brackets over a half-glazed door and casement windows.
At the rear, there is a single storey outshut that runs the entire length of the main building, with the pitch of its roof raised and slated at a later date. This section includes 20th-century windows and a door. The building is said to have evidence of origins dating back to the late 17th or early 18th century.
Local climate
Great House sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 82% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 68% 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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- No EPC on record for this property
- Sale history — 2 transactions since 2000
- 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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