Folly About 250 Metres South South East of Wall Hall is a Grade II listed building in the Hertsmere local planning authority area, England. First listed on 12 August 1985. Folly.
Folly About 250 Metres South South East of Wall Hall
- WRENN ID
- sheer-hall-spring
- Grade
- II
- Local Planning Authority
- Hertsmere
- Constituency
- Hertsmere MP: Sir Oliver Dowden (Con)
- Country
- England
- Date first listed
- 12 August 1985
- Type
- Folly
- OS grid reference
- TQ 137 992
- Coordinates
- 51.68091, -0.35561
- Source
- Historic England listing
Description
This is a folly built around 1800 for G.W. Thelluson, constructed alongside Wall Hall. It is made of brick, with the upper part rendered in cement, and features a picturesque Gothic style. The structure includes a tall wall with a pointed arch gateway and a large turret on the left. The turret is square at the base and chamfered up to an octagonal shape, which has a lancet opening.
Local climate
Folly About 250 Metres South South East of Wall Hall sits in a drier-than-average part of the UK, with an average of 710 mm of rain a year. This makes it drier than 86% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 85% of listed buildings.
It experiences an average of 31 freeze-thaw cycles a year, fewer than 61% 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
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