Cwm gwyn is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 31 January 1997. Cottage. 3 related planning applications.
Cwm gwyn
- WRENN ID
- upper-panel-rush
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 31 January 1997
- Type
- Cottage
- Address
- Cwm gwyn, Rhiwsaeson, Llanbrynmair, SY19 7DY
- OS grid reference
- SH 905 044
- Coordinates
- 52.62687, -3.61893
- Source
- Cadw listing
Description
Cwm Gwyn is a cottage built around 1860. It is constructed of rubble and has a slate roof. The building is two storeys high and has two bays, featuring a symmetrical design with a central entrance. This entrance is set within a gabled timber porch that includes glazing and yellow-stained corners. The cottage has iron lozenge-pattern glazing on both floors, complemented by blue brick segmental heads. There are gable stacks, and at the northwest end, there is a lean-to that has a boarded door, a 20th-century window, and fretted bargeboards.
Local climate
Cwm gwyn sits in one of the wettest parts of the UK, with an average of 1,190 mm of rain a year. This makes it wetter than 91% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 85% of listed buildings.
It experiences an average of 47 freeze-thaw cycles a year, more than 89% 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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- No EPC on record for this property
- Sale history — 1 transaction since 2017
- 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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