Sydenham Mill is a Grade II listed building in the West Devon local planning authority area, England. First listed on 7 November 1985. House, water mill.
Sydenham Mill
- WRENN ID
- winding-trefoil-martin
- Grade
- II
- Local Planning Authority
- West Devon
- Constituency
- Torridge and Tavistock MP: Sir Geoffrey Cox (Con)
- Country
- England
- Date first listed
- 7 November 1985
- Type
- House, water mill
- Address
- Sydenham Mill, Marystow
- OS grid reference
- SX 427 835
- Coordinates
- 50.6301, -4.22433
- Source
- Historic England listing
Description
Sydenham Mill is a house and adjoining water mill, with the mill now disused. It dates from the 18th and 19th centuries. The building is constructed of stone rubble, with the house partly whitewashed and featuring a slate roof that is gabled at one end. There are two stone chimneys, one on the ridge and another at the junction with the mill. The mill has a hipped slate roof and is positioned at right angles to the house, forming a T-plan. At one time, the mill had water wheels at both ends, but these, along with the machinery, no longer exist. The house was originally a single-cell cottage and has been extended in two stages. It is two storeys high. There is a large entrance to the mill under a timber lintel. The mill retains a roof from around the mid-18th century, with purlins and most rafters intact, although it is currently only half-floored. The house has three windows and a front door located on the right side under a slate canopy supported by iron brackets. The windows are modern 20th-century casements with glazing bars. The interior has been modernised.
Local climate
Sydenham Mill sits in a wetter-than-average part of the UK, with an average of 1,020 mm of rain a year. This makes it wetter than 82% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 79% of listed buildings.
It experiences an average of 24 freeze-thaw cycles a year, fewer than 75% of listed buildings. Of these, 10 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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