Gate Piers and Flanking Walls at Entrance to Former Gunpowder Works at Sw754377 is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 24 November 1988. A C19 Gate piers.
Gate Piers and Flanking Walls at Entrance to Former Gunpowder Works at Sw754377
- WRENN ID
- moated-footing-soot
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- Truro and Falmouth MP: Jayne Kirkham (Lab)
- Country
- England
- Date first listed
- 24 November 1988
- Type
- Gate piers
- Address
- Gate Piers and Flanking Walls at Entrance to Former Gunpowder Works at Sw754377, Cot Hill, Ponsanooth
- OS grid reference
- SW 754 376
- Coordinates
- 50.19652, -5.14804
- Source
- Historic England listing
Description
The gate piers and flanking walls at the entrance to the former Kennal Vale Gunpowder Works date from the late 19th century. They are constructed from granite rubble with granite dressings. The wide gateway features piers and terminal piers that are integrated with the flanking walls. These piers rise above the walls and have ramped pyramidal caps, while the walls slope down on either side of the terminal piers. The gateway is partly blocked.
Historically, Kennal Vale is known for being an exceptionally well-preserved gunpowder works that opened in 1812 and was extended in 1844. The house located inside the gateway is depicted on maps from 1840, suggesting that this entrance likely dates from the opening of the upper works in 1844.
Local climate
Gate Piers and Flanking Walls at Entrance to Former Gunpowder Works at Sw754377 receives an average of 850 mm of rain a year. This makes it wetter than 59% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 84% of listed buildings.
It experiences an average of 7 freeze-thaw cycles a year, fewer than 95% of listed buildings. Of these, 3 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
- Sale history — 1 transaction since 2023
- 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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