Old Watermill, Port An Duin', Gigha is a Grade C listed building in the Argyll and Bute local planning authority area, Scotland. First listed on 28 August 1980. Mill. 1 related planning application.

Old Watermill, Port An Duin', Gigha

WRENN ID
far-cornice-swift
Grade
C
Local Planning Authority
Argyll and Bute
Constituency
Argyll, Bute and South Lochaber MP: Brendan O'Hara (SNP)
Country
Scotland
Date first listed
28 August 1980
Type
Mill
Address
Old Watermill, Port An Duin', Gigha, PA41 7AA
OS grid reference
NR 641 506
Coordinates
55.69186, -5.7542
Source
Historic Environment Scotland listing

Also on this page: related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The Old Watermill at Port An Duin on Gigha dates back to the 18th century. It is a traditional one-plan building situated on a slope, featuring one storey and a loft. The structure is made of rubble and currently has no roof. It includes a segmental arch and a one-storey gabled addition. Notable features include a cast-iron mill-lade and an over-shot wheel. The interior has been gutted, but mill-stones and machinery remain on a grass-grown floor.

Local climate

Old Watermill, Port An Duin', Gigha sits in one of the wettest parts of the UK, with an average of 1,500 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.

It experiences an average of 1 freeze-thaw cycle a year, fewer than 99% of listed buildings. Of these, 1 follows at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°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
  • 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
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Nearby listed buildings

  1. Gigha Parish Church Grade B 1.8 km
  2. Manse, Gigha Grade B 1.9 km
  3. Hotel, Gigha Grade B 2.1 km
  4. Boundary Wall And Gateways, St Cathan's Church And Kilchattan Burial Ground, Gigha Grade C 2.6 km
  5. Achamore House, Achamore Estate, Gigha Grade B 2.8 km
  6. Gateway, Achamore Estate Grade B 2.9 km
  7. Farm Steading, Achamore House, Gigha Grade B 3.1 km
  8. Gate Lodge And Gatepiers, Achamore Estate, Gigha Grade B 3.4 km
  9. Cara House, Cara Grade C 6.3 km
  10. St Fionnlugh's Chapel, Cara Grade B 6.3 km