Old Mill Farmhouse is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 14 January 1988. Farmhouse.

Old Mill Farmhouse

WRENN ID
hushed-gable-spindle
Grade
II
Local Planning Authority
Cornwall
Constituency
Camborne and Redruth MP: Perran Moon (Lab)
Country
England
Date first listed
14 January 1988
Type
Farmhouse
Address
Old Mill Farmhouse, Gwinear-Gwithian
OS grid reference
SW 621 393
Coordinates
50.20593, -5.33448
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Old Mill Farmhouse is a Grade II listed farmhouse, likely built in the 18th century. It features painted rubble and cob construction, topped with a wheat reed thatched roof that has gable end stacks and brick chimneys, including a large external stack on the left side. The farmhouse has a two-room plan, with a later 18th-century lean-to on the right end and a 20th-century extension at the rear. The left-hand room is wider and deeper, possibly designed for the original staircase, and both original rooms contain large fireplaces.

The exterior is two storeys high and has a nearly symmetrical three-window south front, with a doorway and a window slightly to the right of the middle. Wooden lintels are present above the openings, and there is a single-storey lean-to at the right-hand end, featuring a 20th-century door and windows. Inside, the layout has been remodelled in the 20th century but retains original beams in the right-hand room, 19th-century beams in the left-hand room, and original stone fireplaces. The first floor and roof structure have not been inspected.

Local climate

Old Mill Farmhouse receives an average of 880 mm of rain a year. This makes it wetter than 65% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% 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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  • 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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