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Cof Cymru: National Historic Assets of Wales · Wales

Farm building at Plas Iolyn

Pentrefoelas, Conwy, Wales

A Grade II listed building in Tre Brys, Pentrefoelas, Conwy, designated on 23 June 1967.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Farm building at Plas Iolyn, Pentrefoelas, Conwy, 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
Agriculture and Subsistence
Date of designation
23 June 1967
Locality
Tre Brys
Town
Pentrefoelas
Community
Pentrefoelas
Unitary authority
Conwy
Country
Wales
Coordinates
53.03871, -3.66980
Cadw reference
131

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)
  • 1830 · V.3:11-15:XV. Britisches Reich. A. Kon: England. b. Frstenthum Wales: Shire: 37-40 (David Rumsey Map Collection, Stanford Libraries)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1898 · 120 Corwen (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

The building forms the W side of the main yard in front of the house, and at its southern end links to the Great Barn.

The building appears to be a rebuild of the late C18 or early C19 of an earlier structure on the site. Plas Iolyn farmhouse was once the major sub-medieval house of this district.

Constructed with stone rubble, with a slate roof. Two storeys, containing two cells, the lower, at the N end, a cow house with two battened doors and ventilation slits to the upper floor. The upper end, possibly formerly a stable, has a central door and glazed windows either side to the lower floor. The front wall continues S to the rock face below the Great Barn, and now used as a kennel.

The door leads to a cross feeding walk at the upper end of the cowhouse. A similar transverse feeding walk in the S section without separate external access. Roof carried on two tiers of purlins, and the soffit torched.

Included as part of the group of important farm buildings associated with the historically important farmstead of Plas Iolyn.

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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