Gwernsaer is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 26 June 1998. House.
Gwernsaer
- WRENN ID
- veiled-hearth-dawn
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 26 June 1998
- Type
- House
- Address
- Gwernsaer, Rhiw, Pwllheli, Aberdaron
- OS grid reference
- SH 238 289
- Coordinates
- 52.82893, -4.61587
- Source
- Cadw listing
Description
Gwernsaer is a small farmhouse that includes an attached converted byre. It is constructed from roughly squared rubble stone and features a renewed slate roof with stone end stacks that have dripstones and pyramid cement cappings. The building is single-storey and lofted within, with a double-fronted design that is offset to the right. There are 4-pane sash windows on each side of a 20th-century ledged door, with slab lintels and slate sills. On the right end, there is a 20th-century hipped conservatory. The former byre, which is slightly lower than the farmhouse, is located to the left and has 20th-century 4-pane windows: one under the eaves on the left, a smaller window in the center with a slab lintel, and another to the extreme right, also with a slab lintel.
Local climate
Gwernsaer sits in one of the wettest parts of the UK, with an average of 1,600 mm of rain a year. This makes it wetter than 99% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.
It experiences an average of 1 freeze-thaw cycle a year, fewer than 99% of listed buildings. Of these, 1 follows at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°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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