Bryn Glas is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 28 May 1999. Cottage.
Bryn Glas
- WRENN ID
- waning-lintel-lake
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 28 May 1999
- Type
- Cottage
- Address
- Bryn Glas, Nant Peris, Caernarfon, Llanberis, Gwynedd
- OS grid reference
- SH 609 585
- Coordinates
- 53.10592, -4.07818
- Source
- Cadw listing
Description
Bryn Glas is a single-storey cottage that was built for quarry workers. It has a two-room layout with integral end stacks and an entrance that is slightly offset to the right. At the rear, there is a full-width catslide outshut. The cottage is constructed from limewashed rubblestone and features a slate roof with slate coping on the left gable end. There are four-pane sash windows with slate cills on either side of a central boarded door, which has a narrow overlight above it. A late 20th-century addition is attached to the rear left corner of the building.
The garden is enclosed by a fence made of thin vertical slate slabs set into the ground, connected by horizontal iron wire, with a timber gate located roughly in the center. The interior was not accessible during the survey.
Local climate
Bryn Glas sits in one of the wettest parts of the UK, with an average of 1,360 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.
It experiences an average of 40 freeze-thaw cycles a year, more than 78% 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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