Glan Dwyryd is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 30 November 1966. House.
Glan Dwyryd
- WRENN ID
- hallowed-casement-torch
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 30 November 1966
- Type
- House
- Address
- Glan Dwyryd, Maentwrog, Gwynedd, LL41 4HN
- OS grid reference
- SH 664 405
- Coordinates
- 52.9456, -3.98874
- Source
- Cadw listing
Description
Glan Dwyryd is a two-storey house built in the Georgian style, typical of the estate from this period. It features coursed stone masonry and a large stone lintel above the first-floor openings. The slate roof has overhanging eaves and large rectangular end stacks with dripstones and capping. The house has a symmetrical three-window layout with a central doorway that contains a panelled door topped by a shallow overlight with diamond glazing bars. The windows are 12-pane sashes with slate sills. At the rear, there is a basement storey that retains small paned casement windows. The interior was not inspected during the survey conducted in June and July 2003.
Local climate
Glan Dwyryd sits in one of the wettest parts of the UK, with an average of 1,450 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 96% of listed buildings.
It experiences an average of 36 freeze-thaw cycles a year, more than 60% of listed buildings. Of these, 18 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
- Sale history — 2 transactions since 2012
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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