Trethake Mill is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 20 June 1979. A C18 Mill. 2 related planning applications.
Trethake Mill
- WRENN ID
- twisted-sentry-dale
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- South East Cornwall MP: Anna Gelderd (Lab)
- Country
- England
- Date first listed
- 20 June 1979
- Type
- Mill
- Address
- Trethake Mill, Lanteglos, PL23 1NL
- OS grid reference
- SX 155 530
- Coordinates
- 50.34864, -4.59357
- Source
- Historic England listing
Description
Trethake Mill is a corn water mill, likely dating from the 18th century, situated within the course of a stream and undergoing conversion into a dwelling. The mill is constructed of rubblestone with a slate roof featuring gable ends. The north front is asymmetrical and features a back-shot hybrid water wheel. The wheel's inner side bears the maker’s name, "Oatleys of Wadebridge." Windows have been inserted above the wheel on the first floor and to the right. Twentieth-century four-light timber casements with glazing bars are present, along with a door set within a brick segmental arch. The gable end incorporates two ground-floor windows with three-light timber casements and glazing bars. The rear of the mill retains original openings, including a timber lintel above a ground-floor door opening and two-light centre-hung casements with glazing bars on the first floor. An extension to the east gable end was rebuilt in the 1980s. Significantly, a complete and outstanding collection of wooden mill machinery remains in situ. The mill's history can be traced back to 1309 and was later known as Kent’s mill.
Local climate
Trethake Mill 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
Sign in or create a free account to unlock:
- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 1 transaction since 2018
- Related listed building consents — 2 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.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
this building 1 similar nearby listed buildings
Nearby listed buildings
- Trethake Mill House
- Trethake Farmhouse
- Tredudwell Manor
- Trevedda Farmhouse
- Carneggan Farmhouse
- Barn, Shippon and Horse Engine Immediately to South of Lawhippet Farmhouse
- Lawhippet Farmhouse Including Front Garden Area Wall and Gate Piers to West
- Guidestone 140m South of Polglaze
- Blacksmiths House and Smithy Watergate
- Trevelyan Including Garage on North, Outbuildings to West and Garden Walls