23 Llwybr Main is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 24 May 2000. Cottage.

23 Llwybr Main

WRENN ID
outer-pavement-lark
Grade
II
Local Planning Authority
Gwynedd
Constituency
Bangor Aberconwy MP: Claire Hughes (Lab)
Country
Wales
Date first listed
24 May 2000
Type
Cottage
Address
23 Llwybr Main, Mynydd Llandygai, Bangor, Llandygai
OS grid reference
SH 603 655
Coordinates
53.16904, -4.09066
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

23 and 24 Llwybr Main in Llandygai are a pair of single-storey cottages built for quarry workers, each featuring a two-room layout with a loft. They are aligned from north-west to south-east and constructed from roughly coursed and dressed rubblestone blocks, which are rendered and painted on the gable ends. The cottages have slate roofs. Each cottage includes two-light windows with slate sills on either side of a slightly offset entrance, along with integral end stacks and a shared ridge stack located centrally between the two cottages. There are also windows in the gable ends that light the lofts and catslide lean-tos at the rear.

The front of the cottages has late 20th-century plastic windows beside a 20th-century lean-to porch that is roughcast and features half-glazed inner and outer doors. One of the integral end stacks has been removed. Additionally, there is a small outbuilding attached to the rear, which is now part of the domestic accommodation. The interior was not inspected during the survey.

Local climate

23 Llwybr Main sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.

It experiences an average of 37 freeze-thaw cycles a year, more than 67% of listed buildings. Of these, 19 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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  • Detailed attributes — period, style, materials, features
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  • Radon risk assessment
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Nearby listed buildings

  1. 24 Llwybr Main Grade II 9 m
  2. Privies to Nos.23 & 24 Grade II 11 m
  3. Boundary Walls/Slate Fencing to Nos.23 & 24 Grade II 17 m
  4. 8 Llwybr Main Grade II 280 m
  5. 7 Llwybr Main Grade II 291 m
  6. Boundary Walls/Slate Fencing to Nos.24 & 25 Grade II 297 m
  7. Privy to No.7 Grade II 302 m
  8. 24 Tan y Bwlch Grade II 310 m
  9. Outbuildings to No.24 Grade II 320 m
  10. 25 Tan y Bwlch Grade II 321 m