Walkern Mill, and Number 161 (Millers Cottage) is a Grade II listed building in the East Hertfordshire local planning authority area, England. First listed on 8 August 1979. Water mill, house. 4 related planning applications.
Walkern Mill, and Number 161 (Millers Cottage)
- WRENN ID
- western-attic-lake
- Grade
- II
- Local Planning Authority
- East Hertfordshire
- Constituency
- North East Hertfordshire MP: Chris Hinchliff (Lab)
- Country
- England
- Date first listed
- 8 August 1979
- Type
- Water mill, house
- Address
- Walkern Mill, and Number 161 (Millers Cottage), High Street, SG2 7NP
- OS grid reference
- TL 285 254
- Coordinates
- 51.91258, -0.13184
- Source
- Historic England listing
Description
A water mill and adjoining house, dating in part to the early 17th century, are located on the River Beane in Walkern. The mill was rebuilt in 1826 and subsequently altered in 1836 and 1856. It was converted to steam power in 1881 and ceased working in 1933, undergoing residential conversion in 1980-81. The mill is constructed of red brick with a gambrel roof. The upper roof slope is covered in Welsh slate, while the lower slope uses green Westmorland slate decorated with large and small lozenge motifs. It is a tall, L-shaped building of three storeys and attics, with the main range running east-west and a wing projecting south. Broad pilasters mark each bay, narrowing above the second floor. Cast iron tie-plates are present. The south gable features decorative cast iron windows with pointed arches (two per floor and one in the attic). Segmental arches define the wider windows elsewhere. Gabled lucams are positioned on the north and south sides of the main range, each with glazed doors. Painted lettering on the south gable reads ‘G D PEARMAN/WALKERN - defaced to confuse invaders 1939-45/FLOUR MILLS/1881’, with the dates ‘1828’, ‘1836’, and ‘1856’ shown in smaller figures. The mill’s internal structure of timber beams and floors originally rested on cast iron columns, but has largely been replaced with reinforced concrete, though some original cast iron columns remain. Tall queen-post timber trusses are preserved on the attic floor. The adjoining house, to the west, has a timber frame encased in red brick, with buff segmental window arches and a steep, old red tile roof. 20th-century extensions to the northwest are of minimal significance. The house is a two-storey, three-bay structure facing south, with the western bay partitioned off from the two-bay hall, which now abuts the mill on the east. A symmetrical three-window facade is present, with a parapeted gabled brick porch over the central door. Recessed wooden casement windows are visible. A central chimney at the west end of the hall serves the room at the end, with a staircase rising behind it. A later small chimney is located at the east end of the hall. Inside, exposed timbers are visible, including jowled posts, close studding with numbered joints, a butt-purlin roof with tenoned rafters and wind braces, and a face-halved bladed scarf in the front wallplate. The rear slope of the house has been raised using props from the original structure.
Local climate
Walkern Mill, and Number 161 (Millers Cottage) sits in a drier-than-average part of the UK, with an average of 710 mm of rain a year. This makes it drier than 86% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 78% of listed buildings.
It experiences an average of 35 freeze-thaw cycles a year, more than 57% of listed buildings. Of these, 17 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
- Sale history — 2 transactions since 1998
- Related listed building consents — 4 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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