Trefaes is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 7 June 2005. House.
Trefaes
- WRENN ID
- standing-pinnacle-burdock
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 7 June 2005
- Type
- House
- Address
- Trefaes, Rhoslefain, Llangelynin, Gwynedd
- OS grid reference
- SH 583 057
- Coordinates
- 52.63138, -4.094
- Source
- Cadw listing
Description
Trefaes is a 2-storey, 3-window house built of rubble stone, featuring a graded-slate roof and end stone stacks, with the left-hand stack being larger. The openings are offset to the right and have stone lintels. The central entrance has a replacement glazed door. The windows are 2-light iron-framed casements that include a pattern of diamonds and elongated hexagons.
To the right, there is a lower 1-storey extension made of rubble stone, with a graded-slate roof and a central stone stack. This extension has an inserted or enlarged 2-light window on the left, followed by a single casement, a replacement half-glazed boarded door, and a small window at the right end. The gable end of the extension features an inserted window.
On the left side of the house, there is a rear wing that also has a graded-slate roof. This wing includes a replacement door on the lower storey and a top-hung casement window above. Further back, there is an extension of the wing where the ground is higher, and the entrance, which has a glazed door and a 2-light window to its left, is at first-floor level. On the opposite side of the wing, there is a 6-pane window located below the eaves, along with 2 small inserted skylights. An added outshut with a catslide roof is located behind the main house and features a 4-pane window in its end wall.
The main house consists of 2 units. The larger room on the left side has a large fireplace with a chamfered timber lintel. The dairy in the rear outshut retains slate slabs. The extension on the right side of the house includes a fireplace with stone jambs and a timber lintel, and the ground floor is laid with slate flagstones.
Local climate
Trefaes sits in one of the wettest parts of the UK, with an average of 1,380 mm of rain a year. This makes it wetter than 97% 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 23 freeze-thaw cycles a year, fewer than 76% of listed buildings. Of these, 9 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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