Mill House and Garden Wall is a Grade II listed building in the Welwyn Hatfield local planning authority area, England. First listed on 24 January 1967. House. 1 related planning application.
Mill House and Garden Wall
- WRENN ID
- worn-truss-bracken
- Grade
- II
- Local Planning Authority
- Welwyn Hatfield
- Constituency
- Welwyn Hatfield MP: Andrew Lewin (Lab)
- Country
- England
- Date first listed
- 24 January 1967
- Type
- House
- Address
- Mill House and Garden Wall, 31, Mill Lane, AL6 9EU
- OS grid reference
- TL 232 161
- Coordinates
- 51.82995, -0.2133
- Source
- Historic England listing
Description
Mill House, dating from the later 18th century, incorporates a 17th and early 18th century south wing. The house is constructed of red brick with old tile roofs. The north block is square, two storeys high, and features a parapet with dentilled brick eaves. It has a 1:1:1 window arrangement, with a pedimented projecting central bay, and features recessed sash windows with gauged brick heads. The front incorporates dummy windows, and a fielded panel door set within an architrave surround, topped with a fan having ogee glazing bars. The south wing displays some 17th-century brickwork and a section of a floor band. A red brick garden wall, dating from the 18th and 19th centuries, runs along the north side of the house.
Local climate
Mill House and Garden Wall 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.
- Sale history — 1 transaction since 1997
- Related listed building consents — 1 application
- 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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