Groed Onen Windmill is a Grade II listed building in the Flintshire local planning authority area, Wales. First listed on 26 July 1951. Windmill. 1 related planning application.
Groed Onen Windmill
- WRENN ID
- stubborn-fireplace-lark
- Grade
- II
- Local Planning Authority
- Flintshire
- Constituency
- Clwyd East MP: Becky Gittins (Lab)
- Country
- Wales
- Date first listed
- 26 July 1951
- Type
- Windmill
- Address
- Groed Onen Windmill, Pen-Y-Maes, Holywell, CH8 9BQ
- OS grid reference
- SJ 190 758
- Coordinates
- 53.27323, -3.21534
- Source
- Cadw listing
Description
Groed Onen Windmill is a stone-built conical tower windmill, likely constructed in the late 18th century or around 1800. The windmill has undergone restoration over the past ten years. It features a plinth and has been recently whitewashed in Autumn 1990. The original weatherboarded boat-shaped cap has been replaced with a timber balcony, except on the side with the sails. The windmill stands four stories tall and has camber-arched headed openings, with modern small-pane, top-hung windows arranged in regular tiers. There are two modern doors on the north side; the upper door leads to a first-floor balcony supported by raking timber struts that spring from the plinth, with iron cleats.
Local climate
Groed Onen Windmill receives an average of 930 mm of rain a year. This makes it wetter than 70% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 79% of listed buildings.
It experiences an average of 30 freeze-thaw cycles a year, fewer than 65% 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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- No EPC on record for this property
- Sale history — 1 transaction since 1998
- 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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