Mill at Sw74883733 is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 17 June 1988. Water mill.
Mill at Sw74883733
- WRENN ID
- muffled-lead-azure
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- Camborne and Redruth MP: Perran Moon (Lab)
- Country
- England
- Date first listed
- 17 June 1988
- Type
- Water mill
- Address
- Mill at Sw74883733, Stithians
- OS grid reference
- SW 748 373
- Coordinates
- 50.19308, -5.15532
- Source
- Historic England listing
Description
The building is a water mill for grinding gunpowder, dating from around 1850. It was constructed for the Kennal Vale gunpowder works. The structure is made of dressed granite and granite rubble and is currently roofless. The mill has a rectangular plan with a central wheel pit that divides two similar rectangular two-storey blocks, each with original basements designed to house the gearing, while the millstone is located on the upper floors. The hub and parts of the rims of the waterwheel are still intact. The mill is built into the bank at the rear and was originally powered by water from a leat that runs parallel to the back of the building.
The exterior features two storeys, with a stone floor above the basement. The east-south-east front is symmetrical with two windows. There is a tall central opening for the wheel pit, flanked by two originally identical one-window fronts. Each front includes a small opening for the basement and larger openings above. Part of the right-hand bay has collapsed. The interior has not been inspected, but it may still contain machinery and millstones. This mill is notable as the last built and last used of a group of six similar mills that remain in the picturesque Kennal Valley.
Local climate
Mill at Sw74883733 receives an average of 870 mm of rain a year. This makes it wetter than 62% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% of listed buildings.
It experiences an average of 5 freeze-thaw cycles a year, fewer than 97% 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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