Engine House at SW 42113646 is a Grade II listed building in the Cornwall local planning authority area, England. A C19 Industrial building.

Engine House at SW 42113646

WRENN ID
tattered-quartz-elm
Grade
II
Local Planning Authority
Cornwall
Constituency
St Ives MP: Andrew George (LD)
Country
England
Type
Industrial building
Address
Engine House at SW 42113646, Zennor
OS grid reference
SW 421 364
Coordinates
50.17185, -5.61278
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This is a beam engine house for a tin mine, built around the mid-19th century. It was repaired as a ruin in 1984 for the National Trust. The structure is made of granite rubble with granite dressings, except for the granite ashlar used on the bob wall. The building has a rectangular single-cell plan, with masonry walls in front of the bob wall on the northeast side, which supported former winding machinery.

The engine house is three storeys tall. The bob wall features a central doorway above a basement doorway, while the opposite gable wall has a central window opening on each floor. The left-hand wing wall includes a doorway, and the right-hand wing wall has a window.

Local climate

Engine House at SW 42113646 sits in a wetter-than-average part of the UK, with an average of 970 mm of rain a year. This makes it wetter than 75% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.

It experiences an average of 1 freeze-thaw cycle a year, fewer than 99% of listed buildings. Average temperatures at this location have risen by 0.2°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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  • Detailed attributes — period, style, materials, features
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  • 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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