Glan-y-mor-isaf is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 9 March 2000. House.
Glan-y-mor-isaf
- WRENN ID
- cold-footing-brook
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 9 March 2000
- Type
- House
- Address
- Glan-y-mor-isaf, Talybont, Bangor, Llanllechid
- OS grid reference
- SH 619 723
- Coordinates
- 53.22998, -4.06946
- Source
- Cadw listing
Description
Glan-y-mor-isaf is a 2-storey, L-plan building dating from 1846, with a lower wing attached to the north gable end of the east range. The structure is constructed of roughly coursed rubblestone, featuring partial slate hanging on the first floor of both main ranges, and has slate roofs that are slightly stepped at the center of the east range. The roofs have overhanging verges and carved purlins on both main ranges, with slate coping on the lower wing.
There are entrances in both main ranges. The south range features a 6-panel door set in a gabled stone porch, which includes a datestone marked "1846." There is another 6-panel door on the right side of the east range, with both doors having glazed top panels. The east range has two gabled dormers that break the eaves: the left dormer contains a 4-paned sash window, while the right dormer has a 2-light, 12-paned casement divided by a mullion. The right dormer is positioned above the door, and the left dormer is above a 4-paned sash window. The south range has similar window arrangements.
A ridge stack at the center of the east range features tall paired and rebated brick shafts with stepped capping, while the lower wing has a window at the front and an integral end stack with a stone base and brick shaft. The interior was not accessible at the time of the survey.
Local climate
Glan-y-mor-isaf sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.
It experiences an average of 37 freeze-thaw cycles a year, more than 67% of listed buildings. Of these, 19 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.
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- No EPC on record for this property
- No sale records on file
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- 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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