Knowstone Mill is a Grade II listed building in the North Devon local planning authority area, England. House. 1 related planning application.

Knowstone Mill

WRENN ID
weathered-bailey-brook
Grade
II
Local Planning Authority
North Devon
Constituency
North Devon MP: Ian Roome (LD)
Country
England
Type
House
Address
Knowstone Mill, EX36 4RT
OS grid reference
SS 811 231
Coordinates
50.99574, -3.69439
Source
Historic England listing

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

Description

Knowstone Mill is a house that likely dates from the late 17th century but has been extensively remodeled in the 20th century. It is constructed from rendered stone rubble and cob, topped with a thatch roof that is half-hipped at the left end and gabled at the right. The building features two axial stacks, one made of brick and the other of stone rubble.

The layout has been completely altered in the 20th century and now consists of four rooms arranged in a line. There is a direct entry into the second room from the left, with staircases located in the rear left-hand corner and beside the stack leading to the third room from the left. The original plan likely included the two central rooms, with a larger hall or kitchen on the right. The left end room seems to have been added in the late 18th or early 19th century, while the right end room was added in the 20th century. There are large continuous outshuts at the rear.

The exterior of the building is two storeys high with a five-window range. The 20th-century windows are mostly two-light casements, except for a late 18th-century three-light window on the left and a three-light window above a four-light window to the right of the doorway. All windows have rectangular leaded panes, which may have been reused or reset. The entrance features a plank door with a gabled corrugated iron canopy, and there is a lean-to at the left end.

Inside, the space has been significantly altered in the 20th century, but some reused fabric from the 18th and 19th centuries has been incorporated. A large chamfered cross ceiling beam is present in the hall or kitchen. There is a panelled door leading to a cupboard to the right of the fireplace, and a panelled window seat in the smaller room, which also has panelled doors to a wall cupboard. An old three-plank door leads to a chamber at the top of the principal stairs.

Local climate

Knowstone Mill receives an average of 960 mm of rain a year. This makes it wetter than 74% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 78% of listed buildings.

It experiences an average of 27 freeze-thaw cycles a year, fewer than 71% of listed buildings. Of these, 12 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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  • No EPC on record for this property
  • Sale history — 1 transaction since 2011
  • Related listed building consents — 1 application
  • 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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