The Mill (James G Callcut (Welwyn) Limited) is a Grade II listed building in the North Hertfordshire local planning authority area, England. First listed on 21 March 1984. Watermill, factory.
The Mill (James G Callcut (Welwyn) Limited)
- WRENN ID
- iron-thatch-sparrow
- Grade
- II
- Local Planning Authority
- North Hertfordshire
- Constituency
- Stevenage MP: Kevin Bonavia (Lab)
- Country
- England
- Date first listed
- 21 March 1984
- Type
- Watermill, factory
- Address
- The Mill (James G Callcut (Welwyn) Limited), Fulling Mill Lane, Codicote, AL6 9NP
- OS grid reference
- TL 226 169
- Coordinates
- 51.83757, -0.22196
- Source
- Historic England listing
Description
The Mill, now a factory, is a watermill dating from the early 19th century. It features a red brick ground floor and an upper floor covered in white-painted weatherboarding. The building has a steep plain tile roof with a large gabled and jettied sack hoist. There are four windows, which are 2-light mid-19th century casements with horizontal glazing bars. The mill has two doors, one on the first floor and one on the ground floor.
Local climate
The Mill (James G Callcut (Welwyn) Limited) 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 85% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 81% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 58% of listed buildings. Of these, 15 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.
- 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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