Mill House is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 22 May 1972. House.

Mill House

WRENN ID
silver-string-hemlock
Grade
II
Local Planning Authority
Cornwall
Constituency
St Ives MP: Andrew George (LD)
Country
England
Date first listed
22 May 1972
Type
House
Address
Mill House, Mill Lane, Helston
OS grid reference
SW 654 278
Coordinates
50.10423, -5.28132
Source
Historic England listing

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

Description

Mill House is a former miller's house, likely built in the 18th century. It features painted rubble walls with timber lintels and a steep roof made of grouted scantle slate, topped with a large rubble chimney on the left side. The house has a shallow-depth plan and stands two storeys high, presenting a nearly symmetrical three-window front. The central doorway is accompanied by a mid-19th century six-pane hornless sash window, while the other windows are late 19th or 20th century horned sashes. The interior has not been inspected but is reported to be unaltered.

Local climate

Mill House receives an average of 870 mm of rain a year. This makes it wetter than 63% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.

It experiences an average of 3 freeze-thaw cycles a year, fewer than 99% of listed buildings. Of these, 1 follows at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°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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