Castle Mill is a Grade II listed building in the Pembrokeshire Coast National Park local planning authority area, Wales. First listed on 14 April 1992. Farmhouse.
Castle Mill
- WRENN ID
- deep-stone-summer
- Grade
- II
- Local Planning Authority
- Pembrokeshire Coast National Park
- Constituency
- Ceredigion Preseli MP: Ben Lake (PC)
- Country
- Wales
- Date first listed
- 14 April 1992
- Type
- Farmhouse
- Address
- Castle Mill, Newport, SA42 0PN
- OS grid reference
- SN 056 389
- Coordinates
- 52.01448, -4.83399
- Source
- Cadw listing
Description
Castle Mill is a water mill constructed from rubble stone, featuring a gabled slate roof that is partly collapsed. The building stands two storeys high, with the eastern side built into a bank, providing direct access to the milling floor and a mill-leat that enters through the rear wall into an integral wheel pit. There is an added single storey range on the western side.
The northern end has a lower-level cart entry, which includes a flat timber lintel and half-glazed double doors. Above this entry is a cambered-headed upper window with stone voussoirs and a slate sill. On the eastern side, there is a door located under the eaves to the right, featuring a slate head, and a blocked opening to the right with stone voussoirs. The western side has a tall narrow exit from the wheel pit to the right, which is framed by cambered cut stone voussoirs. The overshot wheel has been removed. To the left, the single storey range has a two-bay open northern front that was formerly enclosed, with a smoke-blackened interior and a slate roof. There is one first-floor window in the main range, also with stone voussoirs. The southern end has an opening to the wheel pit with a timber lintel and a small upper window with rough stone voussoirs.
Inside, the loft floor is partially collapsed, and there is no machinery present.
Local climate
Castle Mill sits in one of the wettest parts of the UK, with an average of 1,160 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.
It experiences an average of 8 freeze-thaw cycles a year, fewer than 92% 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.
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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