Wonham Mill House is a Grade II listed building in the Mole Valley local planning authority area, England. First listed on 11 November 1966. House. 2 related planning applications.
Wonham Mill House
- WRENN ID
- bitter-truss-jet
- Grade
- II
- Local Planning Authority
- Mole Valley
- Constituency
- Dorking and Horley MP: Chris Coghlan (LD)
- Country
- England
- Date first listed
- 11 November 1966
- Type
- House
- Address
- Wonham Mill House, Wonham Lane, Betchworth, RH3 7AD
- OS grid reference
- TQ 224 496
- Coordinates
- 51.23275, -0.24806
- Source
- Historic England listing
Description
This is an 18th-century mill house located on Wonham Lane in Betchworth. The house is constructed of red/brown brick with a plain tiled roof. It is two storeys high with attics in the gable ends, and features stacks at each end. A wooden eaves cornice runs along the top of the building. The first floor has three cambered-head sash windows with glazing bars; below are two sash windows with 16 panes of glazing bars. A central panelled door is set within a pedimented porch, with 20th-century brick walls filling in the sides. A brick mill is situated to the rear, but is not considered to be of particular architectural interest.
Local climate
Wonham Mill House receives an average of 750 mm of rain a year. This makes it drier than 71% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 57% of listed buildings.
It experiences an average of 36 freeze-thaw cycles a year, more than 64% 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 1 transaction since 2015
- Related listed building consents — 2 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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