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Cof Cymru: National Historic Assets of Wales · Wales

Ty Felin (Mill House)

Porthmadog, Gwynedd, Wales

A Grade II listed building in Tremadog, Porthmadog, Gwynedd, designated on 1 April 1974.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Ty Felin (Mill House), Porthmadog, Gwynedd, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Listed building, Grade II
Broad class
Domestic
Date of designation
1 April 1974
Locality
Tremadog
Community
Porthmadog
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.94128, -4.13833
Cadw reference
4450

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1795 map "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).

Historical maps covering this location

  • 1795 · To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most… (Llyfrgell Genedlaethol Cymru – The National Library of Wales)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 119 Snowdon (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

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This record in Cadw's own full report ↗

Cadw's description

Above and to the NE of Tremadog Manufactory, approximately 300m ENE of Tremadog Market Square.

Tremadog Mill was built c1806. The mill house, shown on the 1842 Tithe map, is designed to be occupied as either a single or 2 dwellings. It is shown as 2 dwellings on the 1888 Ordnance Survey, but apparently was always occupied as a single dwelling.

A 2-storey 2-window house, built as a reflected pair, of coursed rubble, renewed slate roof with added skylights, and stone end stacks. Openings have stone lintels. Replacement doors to the centre are under a lean-to canopy. Windows are all replaced in original openings. Set back to the R is a 1-storey addition of rendered walls and slate roof. In the L gable end the wall is partly built of large unworked boulders. The whitened rear has 4 small windows in the lower storey and 2 upper-storey windows, all replacements in original openings.

The interior has reflected plans with 2 stairs and interconnecting doors.

Listed, notwithstanding window alteration, as a house of interesting and unusual design as a house built to be used as either a single or two dwellings. An integral part of the very early C19 industrial development to the east of Tremadog, it has group value with the Manufactory and associated houses, and contributes to the overall historical integrity of Tremadog.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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