Windmill at Ngr Sy 69087138 is a Grade II listed building in the Dorset local planning authority area, England. Windmill.
Windmill at Ngr Sy 69087138
- WRENN ID
- twelfth-jade-plover
- Grade
- II
- Local Planning Authority
- Dorset
- Constituency
- South Dorset MP: Lloyd Hatton (Lab)
- Country
- England
- Type
- Windmill
- Address
- Windmill at Ngr Sy 69087138, Portland
- OS grid reference
- SY 690 713
- Coordinates
- 50.54151, -2.4376
- Source
- Historic England listing
Description
The windmill located at NGR SY 69087138 is a disused structure, likely dating from the 17th century. It is built from rough coursed rubble and is currently roofless. The windmill features a plain cylindrical shaft with flush dressed coping, measuring approximately 4 meters in diameter and 5.5 meters in height. At the top, there are small openings with dressed jambs, and a former deep opening to the west that is now blocked flush. To the north and south, there are plain square undressed openings that once served as doors. The walls are about 650 millimeters thick. Inside, there are various putlog holes located approximately 3.2 meters above the ground, along with several dressed slots. This windmill is one of only two remaining mills on the island, and it may be older than the other mill situated about 135 meters to the southeast. It is depicted on the Hutchins map of 1710.
Local climate
Windmill at Ngr Sy 69087138 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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