Llwyn-y-Cynfal is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 26 May 1995. A C17 House.
Llwyn-y-Cynfal
- WRENN ID
- solemn-pilaster-autumn
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 26 May 1995
- Type
- House
- Address
- Llwyn-y-Cynfal, Rhydymain, Brithdir and Llanfachreth, Gwynedd
- OS grid reference
- SH 800 224
- Coordinates
- 52.78645, -3.78021
- Source
- Cadw listing
Description
Llwyn-y-Cynfal is a building constructed from rubble on part-boulder foundations, featuring cyclopean blocks in the lower walling. It has rendered parapets and end chimneys that have been reduced and include weather-coursing. The roof is slate with plain eaves and rendered gables.
On the main southeast side, there is an off-centre entrance to the left, which features a fine Tudor arch made of slate-stone voussoirs and a crude returned label above. The entrance has a deeply-recessed boarded door. To the left and far right of the entrance are flanking windows with projecting stone lintels, and there is a small light to the right of the entrance. There is evidence of former rubble dormers on the upper floor, with four square windows corresponding to these.
At the rear, there is an opposing entrance with an exposed timber lintel and a deeply-recessed boarded door, along with flanking windows that are original openings, featuring similar lintels and an additional window beyond. There is a stair-light on the right gable and another small light on the left gable. Although all windows have inappropriate modern glazing, the openings themselves (except for those on the first-floor front) are original.
The interior was not inspected during the survey, but it is known to contain several internal features: a cross-passage plan, a hall with stopped-chamfered ceiling beams and joists, a large end fireplace with an inglebeam, and a mural corkscrew stair with a Tudor-arched wooden entrance.
Local climate
Llwyn-y-Cynfal sits in one of the wettest parts of the UK, with an average of 1,310 mm of rain a year. This makes it wetter than 95% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.
It experiences an average of 45 freeze-thaw cycles a year, more than 86% of listed buildings. Of these, 26 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- 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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