Castle Mill Stone Mill is a Grade II listed building in the Wiltshire local planning authority area, England. First listed on 26 November 1976. Mill. 4 related planning applications.
Castle Mill Stone Mill
- WRENN ID
- slow-obsidian-swallow
- Grade
- II
- Local Planning Authority
- Wiltshire
- Constituency
- South West Wiltshire MP: Dr Andrew Murrison (Con)
- Country
- England
- Date first listed
- 26 November 1976
- Type
- Mill
- Address
- Castle Mill Stone Mill, Court Street, Trowbridge, BA14 8BU
- OS grid reference
- ST 854 578
- Coordinates
- 51.31989, -2.20971
- Source
- Historic England listing
Description
Castle Mill, also known as Stone Mill, is a lower water-driven mill located on the site of a former medieval castle mill, dating from around 1800. The mill features eight ranges of windows. An upper block, which is wider and taller for a steam engine, was added in 1819 and has four windows. The building consists of three storeys, an attic, and a basement, constructed from small ashlar stone with quoins, cill bands, and dressings. It has a double Roman tile roof with ridge cresting.
The mill includes two-light square-headed windows with mullions and glazing bar casements, as well as large three-light dormers, six on each side. The 1819 steam engine block retains first-floor round-headed windows on both sides for the engine room. On the south-west side, to the left of this window, there is an engaged ashlar chimney with bands and a brickwork finish. Modern plate glass windows have been inserted, removing the mullions to the left of the chimney, and there is also a modern block to the left. The north-west front has three windows and steps leading to the first floor.
The listed mills in Court Street form an industrial group with Home Mill Buildings, Castle Factory, and The Chapel, which houses the offices of Samuel Salter and Co Ltd.
Local climate
Castle Mill Stone Mill receives an average of 860 mm of rain a year. This makes it wetter than 61% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 64% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, fewer than 51% of listed buildings. Of these, 15 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- No sale records on file
- Related listed building consents — 4 applications
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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