Plas Coch is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 30 May 1996. Townhouse.
Plas Coch
- WRENN ID
- wild-trefoil-acorn
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 30 May 1996
- Type
- Townhouse
- Address
- Plas Coch, Trefriw, Conwy, LL27 0JH
- OS grid reference
- SH 780 631
- Coordinates
- 53.15154, -3.82472
- Source
- Cadw listing
Description
Plas Coch is a mid-19th century L-shaped town house designed in a simple late Regency style. It is constructed from rough-dressed slate-stone blocks and features a modern slate roof with deep verges and plain bargeboards on the gable ends. The main block has a plain end chimney with a simple cornice band. The two-bay main block is set back, with a single-bay subsidiary section extending to the left at right angles. This subsidiary section has elegant, recessed 12-pane sash windows on both the east (road-facing) and north (gabled) sides, each floor featuring projecting slate cills. The entrance is located to the left of the main block and includes the original four-panel door with a plain three-light rectangular fanlight above. The ground and first floors have windows as previously described, and there is a small four-pane sash window at the attic level on the gable end of the main block. The interior was not inspected during the re-survey in January 1996.
Local climate
Plas Coch sits in a wetter-than-average part of the UK, with an average of 1,100 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 76% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, fewer than 51% 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.
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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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