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Cof Cymru: National Historic Assets of Wales · Wales

Harbour Side, including attached gate piers and wall

Porthmadog, Gwynedd, Wales

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

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Harbour Side, including attached gate piers and wall, 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
Porthmadog
Town
Porthmadog
Community
Porthmadog
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.92281, -4.13030
Cadw reference
4413

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)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

Immediately behind and to the SW of Madoc Yacht Club, at the N entrance to Slate Wharf.

Built c1839 at the entrance to the wharf of the Welsh Slate Company, probably as house and office for the shipping manager. It is shown on the 1842 Tithe map. The gate piers and wall are later and are shown on the 1871 Tremadog estate plan, 1885 harbour survey and 1888 Ordnance Survey.

A Regency 2-storey 2-bay house of coursed stone painted white, hipped slate roof on projecting eaves, a stone ridge stack to the L of centre and stone stack behind on the R side. Windows are 9-pane hornless sashes (renewed on the L side) in the lower storey and 2-pane sashes above. The entrance is in a lean-to porch set back on the R side. It has a door of 2 round-headed panels, and has an overlight incorporating coloured glass and a ship in etched glass. Behind the porch is a lower 2-storey gabled wing with end stack and replacement window to the rear. The L side of the main house has a blocked window in each storey, under a plain hood mould in the lower storey.

Attached to the R of the porch is a gateway, of square coursed stone piers and replacement doors. Behind the R-hand pier is a contemporary wall of local stone, although much rebuilt.

Not inspected.

Listed for its special architectural interest as a harbour-side building retaining good Regency character and detail, and for its contribution to the historical integrity of Porthmadog harbour.

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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