Caerynwch is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 26 May 1995. House. 5 related planning applications.
Caerynwch
- WRENN ID
- strange-tin-ash
- 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
- Caerynwch, Brithdir and Llanfachreth, Gwynedd, LL40 2RF
- OS grid reference
- SH 764 176
- Coordinates
- 52.74254, -3.83209
- Source
- Cadw listing
Description
Caerynwch is a large house, likely dating from the 19th century, constructed of rough-dressed stone blocks with shallow-pitched slate roofs and deeply oversailing eaves. The building has an irregular plan, predominantly two storeys high. The main block is roughly square and presents a four-bay south (entrance) front, with a centrally positioned entrance in the third bay. A single-storey portico, dating from the 19th century, features plain paired pillars and a plain entablature with a part-dentil cornice, sheltering double entrance doors and multi-pane glazed sides. The ground floor windows are tall, 19th-century sashes, while the first floor has recessed, elegant, original 12-pane sashes. To the right and slightly forward of the south front is a single-storey, two-bay addition with a matching hipped roof and long 12-pane sash windows. The west (garden) front is symmetrical, with two wide, shallow, two-storey bow windows framing a slightly recessed central bay. 19th-century glazing features, including French windows, wooden canted bays with plain-sash windows on the ground floor, and tripartite sash windows to the upper bows, alongside a single sash window to the first floor centre.
A three-bay extension, constructed around 1860, adjoins the north side, built in the same style with plain sash windows on both floors, including a central bay window. A further single-storey extension, built around 1901 as a billiard room, extends beyond this and is of similar design. The east (service) side is partially rendered and includes modern additions. The house stands on a raised terrace that steps down to the west.
Although not inspected during a survey in 1995, it is known that the house contains panelled doors, contemporary plaster cornices, and a fine central staircase with swept-rail stairs and iron balusters.
Local climate
Caerynwch sits in one of the wettest parts of the UK, with an average of 1,290 mm of rain a year. This makes it wetter than 94% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 92% of listed buildings.
It experiences an average of 41 freeze-thaw cycles a year, more than 79% of listed buildings. Of these, 22 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.
- Sale history — 1 transaction since 2018
- Related listed building consents — 5 applications
- 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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