Erwgochwen is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 23 May 2003. Cottage.
Erwgochwen
- WRENN ID
- frozen-plinth-dock
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 23 May 2003
- Type
- Cottage
- Address
- Erwgochwen, Llandanwg, Llanfair, Gwynedd
- OS grid reference
- SH 569 285
- Coordinates
- 52.83508, -4.12452
- Source
- Cadw listing
Description
Erwgochwen is a single-storey linear building constructed from rubble masonry and limewashed. It features a slate roof with stone copings and a large stack with dripstones and cappings at the south gable. The cottage, which has two windows and a central doorway, is located at the south end of the range. To the north, the former cowhouse has a single doorway on the left side and a very small window on the right. The windows maintain the original openings but have been replaced with timber-framed two-pane casements. The interior was not viewed during the survey.
Local climate
Erwgochwen sits in one of the wettest parts of the UK, with an average of 1,460 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.
It experiences an average of 31 freeze-thaw cycles a year, fewer than 62% of listed buildings. Of these, 14 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 2 transactions since 2017
- 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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