Trethake Mill House is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 20 June 1979. Mill house. 1 related planning application.
Trethake Mill House
- WRENN ID
- old-spindle-cobweb
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- South East Cornwall MP: Anna Gelderd (Lab)
- Country
- England
- Date first listed
- 20 June 1979
- Type
- Mill house
- Address
- Trethake Mill House, Lanteglos, PL23 1NL
- OS grid reference
- SX 155 530
- Coordinates
- 50.34845, -4.59352
- Source
- Historic England listing
Description
Trethake Mill House is a mill house for Trethake Water Mill, likely built in the late 18th century and remodeled around the 1840s. It was restored in 1983 and 1984. The house features rubble stone construction, which is partly rendered on the left-hand gable end, and has a slate roof with brick stacks at the gable ends. The front elevation has brick segmental arches over all openings. Originally, the house had a single depth plan with two rooms and a passage, but it has been extended to the rear with an outshut.
The building is two storeys high with a symmetrical three-window front and a central six-panelled door. The left-hand window is a tripartite replacement sash with glazing bars, while the right-hand window is a 16-pane sash without horns. On the first floor, there are three 16-pane replacement sashes. There is a single-storey outbuilding attached to the left-hand gable end, which is also made of rubble stone and has a slate roof. Inside, there is a large fireplace in the rear left-hand gable end, and a cloam oven marked "Bideford" that is partly blocked.
Local climate
Trethake Mill House sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.
It experiences an average of 9 freeze-thaw cycles a year, fewer than 92% of listed buildings. Of these, 3 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
- Related listed building consents — 1 application
- 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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