Groeslon is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 30 January 1968. Cottage. 1 related planning application.

Groeslon

WRENN ID
steep-minaret-grain
Grade
II
Local Planning Authority
Isle of Anglesey
Constituency
Ynys Môn MP: Llinos Medi (PC)
Country
Wales
Date first listed
30 January 1968
Type
Cottage
Address
Groeslon, Pentraeth
OS grid reference
SH 533 767
Coordinates
53.26718, -4.20096
Source
Cadw listing

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

Description

Groeslon is a two-storey cottage featuring two windows and a central doorway that is sheltered by a modern glazed porch. It has single-storey wings on either side; the right wing includes a single doorway on the right, while the left wing has a doorway on the right and a large window on the left. The cottage is constructed from rubble masonry and is limewashed. It has a slate roof with rendered gable stacks, including a large squat stack on the left side of the left wing. At the rear, there are several very small windows. The windows are modern timber casements with slate sills, primarily located in the original openings. The interior was not inspected during the survey.

Local climate

Groeslon 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 93% of listed buildings.

It experiences an average of 23 freeze-thaw cycles a year, fewer than 75% of listed buildings. Of these, 11 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
  • 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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