Cae-efa-lwyd-fawr is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 21 July 2000. House. 1 related planning application.

Cae-efa-lwyd-fawr

WRENN ID
eastward-cellar-storm
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
21 July 2000
Type
House
Address
Cae-efa-lwyd-fawr, Penygroes, Caernarfon, Llanllyfni, LL54 6PB
OS grid reference
SH 461 530
Coordinates
53.05226, -4.29711
Source
Cadw listing

Also on this page: sale history · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Cae-efa-lwyd-fawr is a 19th-century building constructed from roughly coursed rubblestone, featuring large quoins and slate lintels above the windows. It has a slate roof with integral end stacks, the left stack being more substantial and equipped with slate drips, along with coped verges. The building is two storeys high, with single-storey gabled ranges at the rear and to the right, creating a rough L-plan. The front has three windows, with the center window being blind, and all windows on both floors have glazing bar sashes, although they were sheeted over at the time of the survey. There is a central entrance that leads through a 20th-century lean-to porch. The rear and right ranges also feature integral end stacks.

Inside, the building has a simple layout with large open fireplaces that have timber lintels in the ground-floor rooms. The interior includes a plain early 19th-century dog-leg staircase with a ramped handrail, closed string, and stick balusters. The floors are made of slate, and there are plank doors. Additionally, there is a copper stack in the right range.

Local climate

Cae-efa-lwyd-fawr 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
  • Sale history — 2 transactions since 1998
  • Related listed building consents — 1 application
  • 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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Nearby listed buildings

  1. Cowhouse to south of Cae-efa-lwyd-fawr Grade II 25 m
  2. Cowhouse at Eithinog-uchaf Grade II 678 m
  3. Barn and stables at Eithinog-uchaf Grade II 688 m
  4. Cowhouse/granary and pigsties at Eithinog-uchaf Grade II 689 m
  5. Pen-y-bryn-bach Grade II 692 m
  6. Former cottage at Eithinog-uchaf Grade II 696 m
  7. Eithinog-uchaf Grade II 697 m
  8. Hen-dy Grade II 776 m
  9. Disused Cottage immediately to north-east of Tan-y-Bryn Grade II 790 m
  10. Tan-y-Bryn Grade II 796 m