Penwethers Farmhouse is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 12 March 1986. Farmhouse.

Penwethers Farmhouse

WRENN ID
open-gargoyle-clover
Grade
II
Local Planning Authority
Cornwall
Constituency
Truro and Falmouth MP: Jayne Kirkham (Lab)
Country
England
Date first listed
12 March 1986
Type
Farmhouse
Address
Penwethers Farmhouse, Kea
OS grid reference
SW 803 439
Coordinates
50.2546, -5.08232
Source
Historic England listing

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

Description

Penwethers Farmhouse is a farmhouse built in 1831 for Michael Dunstan. It features walls made of killas rubble with slate sills, shallow brick arches, and freestone keystones. The roof is a half-hipped design covered with slurried scantle slate and has brick chimneys on the side walls. The layout includes two equal reception rooms on either side of a central vestibule passage, which leads to a small central stair hall situated between narrower rear service rooms. The building is two storeys high and has a symmetrical three-window south front, with a central round-headed brick arched doorway that has the date and builder's initials inscribed on the keystone. The doorway features a circa early 20th century ledged door with a blind fanlight above, which was probably originally glazed. The windows are late 19th to early 20th century four-pane sashes. The interior remains largely unaltered, showcasing the original L-shaped staircase with stick balusters and turned newels, four-panel doors, and a moulded ceiling cornice and band in the left-hand room (parlour). The right-hand room (living room) has moulded ceiling beams, and there is a bread oven in the back kitchen. Despite the later sashes, the house is very complete and particularly interesting due to its building date and the initials of the builder.

Local climate

Penwethers Farmhouse receives an average of 890 mm of rain a year. This makes it wetter than 66% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% of listed buildings.

It experiences an average of 6 freeze-thaw cycles a year, fewer than 96% 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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