Old Mill House is a Grade II listed building in the Three Rivers local planning authority area, England. First listed on 3 October 1985. House. 5 related planning applications.

Old Mill House

WRENN ID
ancient-marble-dawn
Grade
II
Local Planning Authority
Three Rivers
Constituency
South West Hertfordshire MP: Mr Gagan Mohindra (Con)
Country
England
Date first listed
3 October 1985
Type
House
Address
Old Mill House, Loudwater Lane, WD3 4HQ
OS grid reference
TQ 053 961
Coordinates
51.65435, -0.4788
Source
Historic England listing

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

Description

Old Mill House is a house that was formerly part of a paper mill, with origins dating from the late 17th century or early 18th century. It has been extended and altered in the 19th and 20th centuries. The building features a timber frame that is rendered, with a sham timber frame applied. It has slate roofs and consists of four bays across two storeys. The entrance on the ground floor is topped with a 20th-century hood, and there are 20th-century two-light casements. The eaves are modillioned and boxed.

To the left, there is a 19th-century range that was the former wheelhouse, which has the River Chess running beneath it. This section projects forward and has a coped parapet with a gable and kneelers. There is a cross axial ridge stack located to the right of the center, along with end stacks, one of which is extruded on the right return. The entrance on the right return also has a 20th-century hood. At the rear, there are three gables, with a central projecting oriel and a ground floor projecting bay to the right.

Inside, the timber frame is exposed. The building was originally part of a corn mill that was converted to paper production by J. Shipton around 1750. It was owned by H. Ingram of the 'Illustrated London News' from 1846 to 1858 and was closed in 1885.

Local climate

Old 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 84% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 83% of listed buildings.

It experiences an average of 33 freeze-thaw cycles a year, fewer than 54% 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
  • 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
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  10. 142 and 144, High Street Grade II 1.7 km