Sham Ruin About 230 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. Sham ruin.
Sham Ruin About 230 Metres South South East of Wall Hall
- WRENN ID
- sharp-bonework-storm
- Grade
- II
- Local Planning Authority
- Hertsmere
- Constituency
- Hertsmere MP: Sir Oliver Dowden (Con)
- Country
- England
- Date first listed
- 12 August 1985
- Type
- Sham ruin
- OS grid reference
- TQ 137 993
- Coordinates
- 51.68103, -0.35578
- Source
- Historic England listing
Description
The Sham Ruin, located about 230 meters south-southeast of Wall Hall, dates from around 1800 and was commissioned by G.W. Thelluson as a decorative feature associated with Wall Hall. This structure is built from brick and covered in cement render, showcasing a picturesque Gothic style. The main wall faces the house and is complemented by two return walls.
At the front, there is a ground floor pointed arch with a square hood mould, flanked by two blind lancets. Above this, a large, ruinous traceried window features mouldings that were inspired by the Church of St. John the Baptist. The ruin includes two-stage angle buttresses, and the rendering is incised to mimic the appearance of ashlar stone. The right return wall features a four-centred arched opening with a moulded surround.
Local climate
Sham Ruin About 230 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.
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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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