Alport Mill is a Grade II listed building in the Peak District National Park local planning authority area, England. First listed on 14 February 1985. Mill. 1 related planning application.
Alport Mill
- WRENN ID
- slow-keep-hawk
- Grade
- II
- Local Planning Authority
- Peak District National Park
- Constituency
- Derbyshire Dales MP: John Whitby (Lab)
- Country
- England
- Date first listed
- 14 February 1985
- Type
- Mill
- Address
- Alport Mill, Cliff Lane, Harthill, Derbyshire Dales
- OS grid reference
- SK 222 646
- Coordinates
- 53.17831, -1.66885
- Source
- Historic England listing
Description
Alport Mill is a cornmill that has been converted into a trout farm. It dates from the 18th century, with alterations and additions made in the mid-19th century. The building is constructed of coursed limestone rubble, except for the west wall of the 18th-century section, which is made of coursed squared gritstone, featuring gritstone dressings and quoins. The roof is covered with 20th-century stone slates and includes a louvred drying vent at the ridge of the northern addition.
The original mill is three storeys high, with later additions that include a two-storey section and a single-storey section. The layout is irregular, with the 18th-century mill located to the south, a 19th-century addition at the rear, and two single-storey lean-tos on the west side at different levels. A rim-drive water wheel, measuring 21 feet in diameter and five feet wide, is attached to the east side of the 18th-century section.
On the south elevation, there is one glazing bar sash window in a flush surround on the ground floor. The west elevation features a two-light 18th-century flush mullion window on the ground floor, with a similar window above it and another one above that. The rear elevation has 19th-century windows in the 18th-century section and a quoined doorcase with a loft opening above.
Inside, the mill contains a likely mid-19th-century arrangement of five sets of stones arranged over a long drive shaft, with bevel gearing for each set of stones. There is also a drying kiln in the 19th-century addition. This site has been known as a watermill since the 12th century.
Local climate
Alport Mill sits in a wetter-than-average part of the UK, with an average of 980 mm of rain a year. This makes it wetter than 79% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 67% of listed buildings.
It experiences an average of 48 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 29 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
- No sale records on file
- 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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