Pen-y-llyn is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 24 May 2000. House. 2 related planning applications.
Pen-y-llyn
- WRENN ID
- hushed-bastion-hazel
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 24 May 2000
- Type
- House
- Address
- Pen-y-llyn, Ynys, Bangor, Llandygai, LL57 4BZ
- OS grid reference
- SH 606 659
- Coordinates
- 53.17215, -4.08687
- Source
- Cadw listing
Description
Pen-y-llyn is a single-storey, two-room building dating from the 18th century. It is aligned roughly east-west. The walls are of roughcast rubble stone with window surrounds made of purple/brown brick. The roof is slate with purple/brown brick coping. The front elevation features tall windows, which were sheeted over at the time of survey, positioned on either side of a central slate porch with an ogee-pointed outer arch. Rendered integral end stacks are also present. A full-length catslide outshut extends to the rear of the building. The interior was not accessible at the time of survey.
Local climate
Pen-y-llyn 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 2 transactions since 1996
- Related listed building consents — 2 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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