Caer Eglwys is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 29 May 1968. Building.
Caer Eglwys
- WRENN ID
- ruined-stair-reed
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 29 May 1968
- Type
- Building
- Address
- Caer Eglwys, Llandwrog, Caernarfon
- OS grid reference
- SH 451 560
- Coordinates
- 53.07915, -4.31344
- Source
- Cadw listing
Description
Caer Eglwys is a low, 2-storey building designed in a mildly Gothic style, featuring a T-plan layout with a parallel addition at the rear and a single-storey lean-to extension on the right. The original part is constructed from roughly coursed rubblestone, with slate slab lintels and dripstones over the ground-floor windows. The additions are pebbledashed, and the building has slate roofs with overhanging verges and exposed purlin ends, using larger slates on the front.
The front elevation includes a 3-light window on the ground floor and smaller windows directly below the eaves on either side of a full-height central gabled porch, which has a crosslet opening at the top. The pointed doorway features slate slab voussoirs and a plank door. To the left of the porch, there is a brownish red brick ridge stack with toothed capping and chimney pots. An ornamental tablet, likely reset, is located in the left gable end and is inscribed with "IIW 1744". The rear addition includes 20th-century top-hung windows on each floor at the left gable end, along with a red brick ridge stack and additional 20th-century doors and windows in the lean-to extension.
The interior was not inspected at the time of the survey.
Local climate
Caer Eglwys sits in one of the wettest parts of the UK, with an average of 1,370 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 98% of listed buildings.
It experiences an average of 20 freeze-thaw cycles a year, fewer than 78% 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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