Chilham Mills is a Grade II listed building in the Ashford local planning authority area, England. First listed on 4 March 1986. Watermill. 3 related planning applications.

Chilham Mills

WRENN ID
fading-frieze-gold
Grade
II
Local Planning Authority
Ashford
Constituency
Weald of Kent MP: Katie Lam (Con)
Country
England
Date first listed
4 March 1986
Type
Watermill
Address
Chilham Mills, CT4 8EE
OS grid reference
TR 077 533
Coordinates
51.24166, 0.97488
Source
Historic England listing

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

Description

Chilham Mills is a watermill complex that includes a mill house, a storage building, and a bridge, dating from around 1850 and altered in the mid-20th century. The mill house, located to the north, is constructed of brick and features a tiled roof. It consists of two parallel ranges, is two storeys high, and has three windows. Some of the windows are mid-19th century tripartite sashes, while others are 20th-century casements. The entrance has a central doorcase with pilasters and a pediment, and the half-hipped roof is topped with three tall brick chimney stacks.

To the south, the attached mill is a tall structure with four storeys and attics. The ground floor is made of brick, while the upper floors are weatherboarded. It has a tiled roof with two dormers that feature carved bargeboards. The east elevation includes casements with four central panes that open, along with a 16-pane sash window on the top floor. There is a lean-to brick extension that houses the water wheel, which also has a tiled roof. The rear of the mill has casements with centre four panes that open, a loading door on the first floor, and a lucarn on the top floor.

Adjacent to the mill is a two-storey storage building made of brick and weatherboarding, also with a tiled roof and casement windows. The entire complex is built over a brick bridge that has one cambered arch and two round-headed arches. The interior of the mill is notably well-preserved, containing a paddle wheel, millstones, grain bins, and hoppers.

Local climate

Chilham Mills receives an average of 740 mm of rain a year. This makes it drier than 74% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 66% of listed buildings.

It experiences an average of 19 freeze-thaw cycles a year, fewer than 81% of listed buildings. Of these, 10 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 — 3 transactions since 1999
  • Related listed building consents — 3 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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