Summerhouse to NE of Coed Helen is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 10 August 1953. School. 3 related planning applications.
Summerhouse to NE of Coed Helen
- WRENN ID
- rough-tin-ivory
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 10 August 1953
- Type
- School
- Address
- Summerhouse to NE of Coed Helen, Caernarfon, LL54 5RN
- OS grid reference
- SH 475 623
- Coordinates
- 53.13684, -4.27972
- Source
- Cadw listing
Description
The summerhouse located to the northeast of Coed Helen is a castellated two-stage tower with rendered walls and an embattled parapet resting on a moulded cornice. The east and west faces feature a pointed doorway in the lower storey, although the doorway on the east face is blocked, and there is a pointed window above. The north face has a blocked doorway. The tower is positioned on a raised round platform that has brick revetment, which is partly missing, and this platform once supported a perimeter wall.
Local climate
Summerhouse to NE of Coed Helen 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
- No sale records on file
- Related listed building consents — 3 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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