Gamallt House is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 10 April 2000. House.
Gamallt House
- WRENN ID
- floating-pewter-claret
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 10 April 2000
- Type
- House
- Address
- Gamallt House, Abergynolwyn, Tywyn, Llanfihangel-Y-Pennant, Gwynedd
- OS grid reference
- SH 675 070
- Coordinates
- 52.64473, -3.95973
- Source
- Cadw listing
Description
Gamaltt House is a two-storey building constructed from rubble stonework, topped with a new slate roof featuring fascia, bargeboards, and gable stacks. The house has three bays, with a symmetrical northern front that is slightly offset to the left. It features a central six-panelled door, with the top panels glazed, and four-pane horned sash windows on the first floor, including one above the door. The ground floor has a six-paned door and windows, with the right-side window being wider. At the rear, there are three small windows.
On the eastern gable, there is a tall outbuilding attached, situated on steeply falling ground. This outbuilding has two doors and three vents in the gable end. The house was not accessible during the inspection.
Local climate
Gamallt House 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 94% of listed buildings.
It experiences an average of 25 freeze-thaw cycles a year, fewer than 73% of listed buildings. Of these, 10 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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