Mill House at Nantybanw is a Grade II listed building in the Monmouthshire local planning authority area, Wales. First listed on 22 June 2000. Mill.
Mill House at Nantybanw
- WRENN ID
- hallowed-minaret-rook
- Grade
- II
- Local Planning Authority
- Monmouthshire
- Constituency
- Monmouthshire MP: Catherine Fookes (Lab)
- Country
- Wales
- Date first listed
- 22 June 2000
- Type
- Mill
- Address
- Mill House at Nantybanw, Llantrissent/Llantrisant, Usk, Llantrisant Fawr
- OS grid reference
- ST 406 971
- Coordinates
- 51.67007, -2.85908
- Source
- Cadw listing
Description
Mill House at Nantybanw is a former mill that has been converted into a house. It is constructed of rubble stone and features a slate roof. The building is two storeys high and has a three-window range with cambered-headed pairs of casement windows that have stone voussoirs. There are three original oak window frames and two renewed ones, all with square leading to glazing and iron opening casements. The ground floor has a renewed oak plank door on the left, which also features stone voussoirs. A stone chimney is located on the wall face at the left corner. The left end gable has a pair of leaded casement windows, while the right end wall contains a wheel-pit that was used for a former overshot water-wheel.
Inside, the ground floor has a three-bay room with machinery located in the right end bay. This includes an iron pit-wheel that turns an oak horizontal toothed wheel. The upper floor is not visible, but a millstone remains in situ.
Local climate
Mill House at Nantybanw receives an average of 890 mm of rain a year. This makes it wetter than 66% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 66% of listed buildings.
It experiences an average of 41 freeze-thaw cycles a year, more than 78% of listed buildings. Of these, 18 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 2 transactions since 2020
- 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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