Windmill at Ngr Sy 69077128 is a Grade II listed building in the Dorset local planning authority area, England. Industrial.
Windmill at Ngr Sy 69077128
- WRENN ID
- winter-basalt-tide
- Grade
- II
- Local Planning Authority
- Dorset
- Constituency
- South Dorset MP: Lloyd Hatton (Lab)
- Country
- England
- Type
- Industrial
- Address
- Windmill at Ngr Sy 69077128, Portland
- OS grid reference
- SY 691 712
- Coordinates
- 50.54059, -2.43621
- Source
- Historic England listing
Description
The windmill located at NGR SY 69077128 is a Grade II listed structure, likely dating from the 17th century. It is built of rough coursed rubble and is currently roofless. The cylindrical shaft is slightly tapered, measuring approximately 4 meters in diameter and 7 meters in height. There are various openings at three levels, most featuring flush single stone quoins, lintels, and weathered cills for small upright rectangular lights. A blocked door is present on the southeast side, while a door opening on the northeast side has a slight basket-arch head. Inside, there is an inserted concrete floor slab on corrugated shuttering, which probably dates from World War Two. This windmill is one of only two remaining disused windmills on the island and is depicted on the Hutchins map of 1710.
Local climate
Windmill at Ngr Sy 69077128 receives an average of 840 mm of rain a year. This makes it wetter than 55% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 77% of listed buildings.
It experiences an average of 13 freeze-thaw cycles a year, fewer than 88% of listed buildings. Of these, 5 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
- No sale records on file
- No related consent applications matched
- 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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