Groeswen is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 3 August 2001. Farmhouse.
Groeswen
- WRENN ID
- vacant-hammer-vermeil
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 3 August 2001
- Type
- Farmhouse
- Address
- Groeswen, Gwenddwr, Builth Wells, Erwood
- OS grid reference
- SO 046 436
- Coordinates
- 52.0829, -3.39302
- Source
- Cadw listing
Description
Groeswen is a farmhouse built from whitewashed rubble stone, topped with a slate roof that has close eaves and rendered end stacks. The building is two storeys high and features a three-window range, with 9-pane windows and a board door located to the right of the centre, which is not aligned with the window above. The windows have painted cambered brick heads and stone sills, and they include hinged opening top-lights.
On the left end, there is a large lean-to that has a 4-pane small window positioned above a 9-pane window, along with a stone stack on the side wall. The main house has an outshut at the rear, although the rear wall collapsed in 2000. Access to both the outshut and the lean-to is through a porch located in the re-entrant angle. The right end wall features a loft light. The interior has not been inspected.
Local climate
Groeswen sits in a wetter-than-average part of the UK, with an average of 1,080 mm of rain a year. This makes it wetter than 86% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.
It experiences an average of 46 freeze-thaw cycles a year, more than 87% of listed buildings. Of these, 25 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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