Efail Bach is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 7 February 2002. Cottage. 4 related planning applications.

Efail Bach

WRENN ID
upper-doorway-smoke
Grade
II
Local Planning Authority
Isle of Anglesey
Constituency
Ynys Môn MP: Llinos Medi (PC)
Country
Wales
Date first listed
7 February 2002
Type
Cottage
Address
Efail Bach, City Dulas, Moelfre
OS grid reference
SH 472 873
Coordinates
53.36082, -4.29658
Source
Cadw listing

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

Description

Efail Bach is a single-storey cottage, likely dating from the 18th century. It is constructed of rubble masonry, which has been limewashed. The cottage has a slate roof with a tiled ridge, decorative coping, and Velux windows to the rear. Prominent, large rectangular gable stacks are rendered and have capping. The eaves line is high. The front of the cottage, facing a small garden to the northwest, features a central doorway with a modern door, flanked by small six-pane horned sash windows with slate sills. A later addition is visible at the rear. The interior was not inspected during the survey.

Local climate

Efail Bach sits in a wetter-than-average part of the UK, with an average of 1,070 mm of rain a year. This makes it wetter than 86% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.

It experiences an average of 14 freeze-thaw cycles a year, fewer than 87% of listed buildings. Of these, 5 follow at least 1 mm of rain in the preceding 48 hours. 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 2 transactions since 2013
  • Related listed building consents — 4 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
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