Y Gegin Fawr is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 19 October 1971. House.
Y Gegin Fawr
- WRENN ID
- slow-tower-mallow
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 19 October 1971
- Type
- House
- Address
- Y Gegin Fawr, Aberdaron, Pwllheli
- OS grid reference
- SH 172 264
- Coordinates
- 52.80424, -4.71242
- Source
- Cadw listing
Description
Y Gegin Fawr is a house made of whitewashed rubble stone, featuring a renewed roof covered with small greenish slates. It has squat whitewashed stone end stacks with dripstones, and a larger stack on the right side. The building is one and a half storeys tall and has a double-fronted design that is offset to the left.
On the upper level, there are two 4-pane sash windows located above the eaves in stone dormers, which have slightly pitched roofs and slated sides. The ground floor includes two windows; the one on the left is boarded up, while the right features a small 16-pane sash window. In the center, there is a 20th-century glazed door.
To the left of the main house, there is a flat-roofed outbuilding that has a ground floor door and outside stone steps leading to a 20th-century loft door. Although the building has been altered, it retains a wide fireplace at the right end, with a recess that may have been used for a winding stair adjacent to it.
Local climate
Y Gegin Fawr 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 99% of listed buildings.
It averages fewer than one freeze-thaw cycle a year. 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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