Lower Long Dean Mill is a Grade II listed building in the Wiltshire local planning authority area, England. First listed on 9 December 1985. Mill, house. 2 related planning applications.

Lower Long Dean Mill

WRENN ID
brooding-flagstone-aspen
Grade
II
Local Planning Authority
Wiltshire
Constituency
South Cotswolds MP: Dr Roz Savage (LD)
Country
England
Date first listed
9 December 1985
Type
Mill, house
Address
Lower Long Dean Mill, Yatton Keynell, SN14 7EX
OS grid reference
ST 849 755
Coordinates
51.47858, -2.21777
Source
Historic England listing

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

Description

Lower Long Dean Mill is a building that has been converted into a house, dating from the late 18th century, although it has an earlier core. The mill house and a drying shed to the north still stand, while the mill that was once attached to the south has been demolished. The structure is built of ashlar and rubble stone, topped with stone tiled roofs. The mill house features an ashlar front with coped gables and ashlar end wall stacks. It is three stories high and double fronted, with two 9-pane attic windows and two pairs of 8-pane sash windows on the first and ground floors, all framed with bead-moulded flush surrounds. The central entrance is a 6-panel door, also with a bead-moulded surround and a pediment supported by brackets above. The building has a raised plinth and bands at the floor levels and eaves.

The drying shed to the north is elevated on a bank to match the roof level of the mill house. It has a rubble stone base with ashlar piers supporting a five-bay drying floor, which has been infilled with rubble stone. There are two 6-pane windows and a loading door at the rear, along with two doors leading to a lower passage. The rear wall of the house is made of rubble stone and features cyma-moulded one and two-light windows, some of which have been reused from a demolished rear range.

Local climate

Lower Long Dean Mill receives an average of 820 mm of rain a year. This makes it wetter than 52% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 55% of listed buildings.

It experiences an average of 34 freeze-thaw cycles a year, more than 50% of listed buildings. Of these, 16 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 2023
  • 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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