Yr Efail is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 6 December 1999. House.
Yr Efail
- WRENN ID
- roaming-bastion-dock
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 6 December 1999
- Type
- House
- Address
- Yr Efail, Corris, Machynlleth
- OS grid reference
- SH 755 078
- Coordinates
- 52.65411, -3.84095
- Source
- Cadw listing
Description
Yr Efail is a two-storey building constructed from local stone rubble and topped with a slate roof. It features two bays, with the front elevation facing southeast across the garden. The entrance consists of a four-panelled door that is slightly off-centre. There are four-paned horned sash windows, two on each floor, which are set beneath rough stone lintels. The building is adorned with stone stacks that have drip courses. Additionally, there is a small metal framed window with small panes located on the upper floor at the rear.
Local climate
Yr Efail sits in one of the wettest parts of the UK, with an average of 1,290 mm of rain a year. This makes it wetter than 94% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 92% of listed buildings.
It experiences an average of 41 freeze-thaw cycles a year, more than 79% of listed buildings. Of these, 22 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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