Carreg Plas is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 26 June 1998. Gentry house.
Carreg Plas
- WRENN ID
- waiting-gable-jet
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 26 June 1998
- Type
- Gentry house
- Address
- Carreg Plas, Pwllheli, Aberdaron, LL53 8LH
- OS grid reference
- SH 164 290
- Coordinates
- 52.8274, -4.72639
- Source
- Cadw listing
Description
Carreg Plas is a gentry house, likely originating in the 17th century and significantly altered in the 18th century. The house is constructed of rubble stone, rendered and partly whitewashed, with steep-pitched slate roofs and three stacks along the main ridge. The western side features stone, while the ridge and eastern side are rendered. A two-storey and attic north entrance front has a double-gabled wing projecting to the right, which is part of the 18th-century addition. To the left of this wing is the original 17th-century section, a two-window arrangement with two small hipped dormers above, and a single, similar window and door below. The windows are 12-pane sashes, and the door is a half-glazed example with marginal glazing bars, all appearing to be from the early 19th century. Two narrow sashes are present on the first floor of the left-end wall. The south front is whitewashed and rendered, with two similar hipped dormers. A projecting 20th-century stair gable mimics the lines of the original, which did not project. A four-pane attic window sits above, alongside two eight-pane sashes at landing height. Large 12-pane sashes are placed on the ground floor, not evenly spaced, along with two similar sashes to the first floor left of the gable, suggesting a late 18th or early 19th century alteration. To the left is the added 18th-century house, roughly the same scale. The south front of this section is whitewashed rubble stone, with two matching hipped dormers and a three-window front offset to the right. It features three first-floor 12-pane sashes over a 20-pane sash, a door, and another 12-pane sash. The door is set within a 20th-century rendered hipped porch. A small four-pane light is present on each floor of the left side of the facade. The west wall is of rubble stone. The rear of this section has a double-gabled northwest wing, possibly an 18th-century stair wing that was doubled in size during the later 19th century. Facing over the entrance court, the east side has 12-pane sashes matching those on the main north front, one above and two below. The north end has a single-window range within the added right gable. The original 17th-century section has a two-room plan, with a partition inserted inside the front door creating a passage. The eastern end room features a moulded plaster cornice. The enclosed stair has turned balusters, a closed string, and turned column newels, partly renewed, likely from the mid-18th century. A room to the right also has a moulded cornice. Some two-panel doors lead to the first floor. The 18th-century house to the west was internally altered in the 19th century to serve as kitchens, and the stair parallel to the rear wall is probably 19th-century and not in its original position. A wide west end fireplace, now covered, is present. The northwest wing contains a large, 19th-century room with a slate fireplace.
Local climate
Carreg Plas sits in one of the wettest parts of the UK, with an average of 1,460 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.
It averages fewer than one freeze-thaw cycle a year. Average temperatures at this location have risen by 0.2°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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