Summerhouse Folly in the grounds of Maenol is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 10 April 1989. Folly.
Summerhouse Folly in the grounds of Maenol
- WRENN ID
- veiled-render-spindle
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 10 April 1989
- Type
- Folly
- Address
- Summerhouse Folly in the grounds of Maenol, Llanidloes
- OS grid reference
- SN 952 836
- Coordinates
- 52.44115, -3.54277
- Source
- Cadw listing
Description
The Summerhouse Folly in the grounds of Maenol is a square structure made of rubble stone, topped with a domed corbelled roof. It features a full-height round-arched entrance with a shell-lined reveal and the underside of the arch also decorated with shells. The rear wall has similar shell grotto-style decorations, including inset pieces of quartz. There is one small window on each side of the building, and the floor is made of stone.
Local climate
Summerhouse Folly in the grounds of Maenol sits in one of the wettest parts of the UK, with an average of 1,180 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 82% of listed buildings.
It experiences an average of 53 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 32 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
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