Thorn Cottage is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 19 October 1987. House.

Thorn Cottage

WRENN ID
salt-spindle-dale
Grade
II
Local Planning Authority
Cornwall
Constituency
South East Cornwall MP: Anna Gelderd (Lab)
Country
England
Date first listed
19 October 1987
Type
House
Address
Thorn Cottage, Calstock
OS grid reference
SX 416 720
Coordinates
50.5271, -4.23482
Source
Historic England listing

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

Description

Thorn Cottage is a house dating from the late 18th century, with some alterations made in the 20th century. It is constructed of painted slatestone rubble, with the upper level at the front featuring painted slate-hanging. The roof is made of asbestos slate and has ridge tiles and gable ends, with gable end stacks that have rubble shafts and shaped tops. An addition to the right has a slurried scantle slate roof.

The layout consists of a two-room plan, with the entrance leading directly into the room on the right, and a larger room to the left, both heated by gable end stacks. There is a two-storey addition at the right end that is unheated, likely used as a dairy with a loft above. A single-storey outshut runs along the entire rear of the house.

The exterior features two storeys and a symmetrical three-window front. The first floor has two early 20th-century two-light casements and a central blind window. The ground floor has a central half-glazed 20th-century door, with similar two-light casements on either side. The lower two-storey addition to the right has a gable end and a six-pane light on the first floor. The left end is blind, while the rear outshut has a 20th-century door on the left side. The right end is also blind and has a 20th-century porch. At the rear, the single-storey outshut is constructed of rubble and features three 20th-century windows. The interior has not been inspected.

Local climate

Thorn Cottage sits in a wetter-than-average part of the UK, with an average of 1,000 mm of rain a year. This makes it wetter than 80% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 81% of listed buildings.

It experiences an average of 17 freeze-thaw cycles a year, fewer than 84% of listed buildings. Of these, 7 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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