The Gaer is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 26 October 1953. House.
The Gaer
- WRENN ID
- carved-soffit-nettle
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 26 October 1953
- Type
- House
- Address
- The Gaer, Thornbury, Forden with Leighton and Trelystan
- OS grid reference
- SO 209 996
- Coordinates
- 52.58861, -3.16877
- Source
- Cadw listing
Description
The Gaer is a two-storey building constructed of roughcast brick with slate roofs. It features a main northeast-southwest range that contains the primary reception rooms, flanked by short rear wings at each end. The southeast front has five bays arranged in a rhythm of a-b-a-b-a, with tripartite sash windows consisting of 12 and 9 panes in the a bays. The upper windows are fitted with louvred shutters. The second bay includes a pedimented doorcase with a six-panel beaded door and a rose motif on the entablature fascia, along with a 9-pane sash window above on the first floor. A later addition is a glazed door with a pediment, now located in the second bay b. Above the central three bays, there is a triangular pediment with a small central oculus, set above a moulded cornice. The building has brick gable stacks topped with yellow clayware pots, with a similar stack positioned centrally at the rear of the main range. The rear range features 19th-century 12-pane sash windows and gable stacks. Attached to the northeast end is a parallel two-bay building made of painted brick, which has a gable stack and 19th-century timber windows with cambered heads on the ground floor. The property was not accessible during the inspection in October 1996.
Local climate
The Gaer 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 greater than that of 58% of listed buildings.
It experiences an average of 42 freeze-thaw cycles a year, more than 81% of listed buildings. Of these, 23 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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