Engine House at SW 42103642 is a Grade II listed building in the Cornwall local planning authority area, England. Engine house.

Engine House at SW 42103642

WRENN ID
dusk-facade-torch
Grade
II
Local Planning Authority
Cornwall
Constituency
St Ives MP: Andrew George (LD)
Country
England
Type
Engine house
Address
Engine House at SW 42103642, Zennor
OS grid reference
SW 421 364
Coordinates
50.17161, -5.61295
Source
Historic England listing

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

Description

The engine house at Zennor, built around the mid-19th century, was originally used for a tin mine and is now a ruin. It was repaired as a ruin in 1984 for the National Trust. The structure is made of granite rubble, with brick used for the upper stage of the chimney. The engine house has a rectangular plan. The west wall, known as the bob wall, has been removed, while the opposite gable wall remains nearly intact and features window openings on each floor. The wing walls are partly collapsed, but the round chimney in the northeast corner stands at full height, complete with coved cornices at the collars. Additionally, two parallel walls still survive at the northeast corner.

Local climate

Engine House at SW 42103642 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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  • No EPC on record for this property
  • No sale records on file
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  • 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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