Pandy Llewenan is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 4 March 1998. Mill.
Pandy Llewenan
- WRENN ID
- sleeping-banister-acorn
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 4 March 1998
- Type
- Mill
- Address
- Pandy Llewenan, Pen Llyn, Bodedern
- OS grid reference
- SH 342 819
- Coordinates
- 53.30877, -4.48972
- Source
- Cadw listing
Description
Pandy Llewenan is a woollen mill group that includes a large mill range and a separately listed dyeing house. The woollen mill range runs north to south and is divided into two sections. The southern part is the original factory building from the early 19th century, while the northern section includes domestic accommodation. Both parts are constructed from rubble masonry and feature pitched roofs covered with old slates, along with rubble kneelers and coping on the original mill.
The original mill is a two-storey building with three bays. It has recessed segmental rubble voussoir heads above the doorways and ground floor factory windows, while the first floor openings have wood lintels. Although all windows have been modernised, they likely retain their original openings. At the southern gable end of the factory, there is a wheel pit that houses a small overshot iron-rimmed wheel equipped with curved sheet-iron buckets. A wide passage, arched on the eastern side and previously containing a second waterwheel pit, separates the northern half of the mill.
The northern addition is a two-storey structure that matches the proportions of the factory and features a chimney on the northern gable end. It has an original door with a recessed segmental rubble voussoir head, which has been partly blocked to create a window. There is also a small single-storey addition on the northern gable wall.
Inside the mill building, there are three bays, but little machinery remains, aside from a driveshaft and belt-wheel located on the first floor.
Local climate
Pandy Llewenan sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.
It experiences an average of 8 freeze-thaw cycles a year, fewer than 93% of listed buildings. Of these, 3 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.
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