Clayton Windmills and the Millhouse Attached is a Grade II* listed building in the South Downs National Park local planning authority area, England. First listed on 28 October 1957. Windmill, millhouse. 5 related planning applications.
Clayton Windmills and the Millhouse Attached
- WRENN ID
- standing-chamber-cobweb
- Grade
- II*
- Local Planning Authority
- South Downs National Park
- Constituency
- Mid Sussex MP: Alison Bennett (LD)
- Country
- England
- Date first listed
- 28 October 1957
- Type
- Windmill, millhouse
- Address
- Clayton Windmills and the Millhouse Attached, Mill Lane, Hassocks, Mid Sussex, BN6 9PG
- OS grid reference
- TQ 303 133
- Coordinates
- 50.90507, -0.14724
- Source
- Historic England listing
Description
Clayton Windmills and the Millhouse attached comprise two complete windmills, the remains of a third, and an attached millhouse. "Jill," the older of the two windmills, dates from 1821 and is a post mill relocated from Dyke Road, Brighton, around 1850. It features a round house of tarred weatherboarding, a metal-sheathed roof and breasts, and sweeps without shutters. The fantail is missing, but the machinery remains intact. "Jack" is a brick tower mill, built in 1866 and faced with tarred metal plates. It has a gallery above the ground floor and a beehive cap with a finial. The framework for the fantail is complete, but the main sweeps are missing. The roof construction demonstrates a skillful example of spheroid framing. "Jack" connects to a mid-19th century millhouse, which is stuccoed, and to the ground floor of a third mill, known as Duncton mill, and older than “Jill.” This third mill was a mid-18th century post mill, taken down in 1866, and is represented by a round house. All three structures are combined to form a dwellinghouse.
Local climate
Clayton Windmills and the Millhouse Attached receives an average of 840 mm of rain a year. This makes it wetter than 56% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 89% of listed buildings.
It experiences an average of 15 freeze-thaw cycles a year, fewer than 85% of listed buildings. Of these, 7 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.
- Sale history — 1 transaction since 2021
- Related listed building consents — 5 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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