Engine House at Sw699492 (Charlotte United) is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 31 October 1988. Engine house.
Engine House at Sw699492 (Charlotte United)
- WRENN ID
- calm-vault-claret
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- Camborne and Redruth MP: Perran Moon (Lab)
- Country
- England
- Date first listed
- 31 October 1988
- Type
- Engine house
- Address
- Engine House at Sw699492 (Charlotte United), St. Agnes
- OS grid reference
- SW 701 490
- Coordinates
- 50.29644, -5.22892
- Source
- Historic England listing
Description
The engine house at Charlotte United, built around 1859, served as a pumping beam engine house for a copper mine. It features walls made of killas rubble and is currently roofless. The structure has a rectangular plan, with only the front (bob) wall and the right-hand wall still standing. In front of the engine house, opposite the shaft, are a pair of parallel walls that once supported a balance bob. The exterior of the bob wall includes a round-arched plug doorway and a small opening below it. The taller wall has a doorway on the left and two small openings, all of which are spanned by timber lintels. This engine house is an important landmark in an unspoiled coastal valley.
Local climate
Engine House at Sw699492 (Charlotte United) receives an average of 920 mm of rain a year. This makes it wetter than 70% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.
It experiences an average of 4 freeze-thaw cycles a year, fewer than 98% of listed buildings. Of these, 2 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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