Roslyn is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 19 June 1990. House.
Roslyn
- WRENN ID
- tilted-oriel-primrose
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 19 June 1990
- Type
- House
- Address
- Roslyn, Dolgellau, Gwynedd
- OS grid reference
- SH 728 174
- Coordinates
- 52.73994, -3.88453
- Source
- Cadw listing
Description
Roslyn is a mid-19th century pair of two-storey houses featuring two windows each. The exterior is made of coursed rubble masonry, topped with a moderately pitched slate roof that has close eaves and plain bargeboards. Each house has dressed stone stacks aligned lengthwise to the ridge at the centre, adorned with heavily moulded caps and water tabling.
A centrally placed gabled dormer is present, with raking gable copings on kneelers and a finial. The houses feature stepped tripartite windows with small panes and a tilting centre light. On the first floor, the left house has a 12-pane sash window, while the right house has a 16-pane sash window, both with stone lintels. The ground floor has larger 16-pane sash windows to the right, and the doorways are located to the left, each with rectangular fanlights; the fanlight on Roslyn is decorative, and the doors have six deep narrow panels.
At the rear of Roslyn, there are two 12-pane sashes on the first floor and a gabled outshot on the ground floor. Y Graig has an unsympathetic large flat-roofed dormer and a modern Velux window. Additionally, there is a two-storey lean-to outshot to the right and a 16-pane sash window to the left.
Local climate
Roslyn sits in one of the wettest parts of the UK, with an average of 1,340 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 93% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, more than 52% of listed buildings. Of these, 17 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 — 5 transactions since 1999
- 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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