Harrowby Mill House is a Grade II listed building in the South Kesteven local planning authority area, England. First listed on 20 April 1972. Mill house.
Harrowby Mill House
- WRENN ID
- noble-pilaster-ochre
- Grade
- II
- Local Planning Authority
- South Kesteven
- Constituency
- Grantham and Bourne MP: Gareth Davies (Con)
- Country
- England
- Date first listed
- 20 April 1972
- Type
- Mill house
- Address
- Harrowby Mill House, Belton Lane, Grantham
- OS grid reference
- SK 921 371
- Coordinates
- 52.92406, -0.63114
- Source
- Historic England listing
Description
Harrowby Mill House is a mill house built in 1702. Although the mill has been demolished and the river diverted, two millstones remain on the site. The house is two stories high and features 19th-century half-timbering and plaster, along with bow windows. Inside, the kitchen retains its original beam ceiling, door lintel, and a floor-height window that leads to the original cellar below. The other two rooms have been altered, with their beams plastered over and the floors lowered. The walls are very thick, and some original window frames are still present. The house was originally part of the Harrowby estate and was later purchased by Mr. Sellars, then by Mr. Willoughby, who added the half-timbering, bow windows, and various ornamental arches made of Ancaster stone. The current tenant has photographs of the house before these ornamental changes, showing the original windows.
Local climate
Harrowby Mill House sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 81% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 88% of listed buildings.
It experiences an average of 36 freeze-thaw cycles a year, more than 65% of listed buildings. Of these, 18 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
- No related consent applications matched
- 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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