Greenhouse at Groes Hall is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 21 July 1999. Greenhouse.
Greenhouse at Groes Hall
- WRENN ID
- hushed-roof-mallow
- Grade
- II
- Local Planning Authority
- Conwy
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 21 July 1999
- Type
- Greenhouse
- Address
- Greenhouse at Groes Hall, Llansannan
- OS grid reference
- SJ 008 648
- Coordinates
- 53.17119, -3.4846
- Source
- Cadw listing
Description
The greenhouse at Groes Hall is a rectangular structure with five bays. It features brick-built footings and a sill wall, with timber framing supporting the glazed walls and roof. The roof has a shaped ridge and a south gable finial. Access is through a half-glazed doorway at the north end, which has lower panels with chamfered surrounds. It is possible that heating for the greenhouse was supplied by the oven and fire in the nearby brewhouse.
Local climate
Greenhouse at Groes Hall sits in a wetter-than-average part of the UK, with an average of 990 mm of rain a year. This makes it wetter than 79% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 50% of listed buildings.
It experiences an average of 28 freeze-thaw cycles a year, fewer than 69% of listed buildings. Of these, 15 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
- No related consent applications matched
- 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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