Lock Cottage is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 19 October 1987. Cottage. 2 related planning applications.

Lock Cottage

WRENN ID
winding-doorway-poplar
Grade
II
Local Planning Authority
Cornwall
Constituency
South East Cornwall MP: Anna Gelderd (Lab)
Country
England
Date first listed
19 October 1987
Type
Cottage
Address
Lock Cottage, Weir Head, Calstock, PL18 9BZ
OS grid reference
SX 435 708
Coordinates
50.51641, -4.20864
Source
Historic England listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Lock Cottage is a lock keeper's cottage, dating to around 1800, and subsequently altered in the 20th century. It is constructed of slatestone rubble. The roof is hipped and covered in asbestos slate, with two axial chimney stacks and a further stack at the left end, all with rubble shafts. The cottage has a three-room plan; the room to the right is heated by an axial stack, the central room by a stack to the left, and the left-end room by a stack at the left end. A small, single-storey stable is attached to the left end, and is now incorporated into the main house. A single-storey lean-to is located at the right end. The front elevation is asymmetrical, with three windows and all 20th-century casements. The entrance is through a 20th-century plank door, located in the room to the right. The stable to the left has two 20th-century windows and doors. The left end of the cottage has two 20th-century windows on the first floor, and the right end has a small, single-storey lean-to and a 20th-century window on the first floor. The rear elevation has 20th-century windows on both the ground and first floors towards both the left and right sides. The interior was not inspected. The cottage's group value is derived from its association with the canal system.

Local climate

Lock 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 3 transactions since 2000
  • 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
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