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Cof Cymru: National Historic Assets of Wales · Wales

The Old Granary

Porthmadog, Gwynedd, Wales

The record

Designation
Listed building, Grade II
Broad class
Agriculture and Subsistence
Date of designation
1 April 1974
Locality
Tremadog
Community
Porthmadog
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.93902, -4.14287
Cadw reference
4444

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

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1795 "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).

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This record in Cadw's own full report ↗

Cadw's description

Set back on the S side of Dublin Street approximately 100m SW of the Market Square.

Tremadog was a town created by William Madocks (1773-1828) in the first decade of the C19 on reclaimed land known as Traeth Mawr, the estuary of Afon Glaslyn. It was originally intended to be a post town on a direct road between London and Dublin, via Porthdinllaen on the Lleyn peninsula, a project that in due course lost out to the Holyhead Road. Tremadog was laid out around a market square, with market hall, coaching inn, houses and shops, with a church and chapel just outside the centre. Building of this small planned development, as well as a separate woollen manufactory, began c1805 and was largely completed by the time Richard Colt Hoare described it in 1810. The Old Granary, built as a granary and coach house, was part of this first phase of development and is shown on the 1842 Tithe map. It was later a carpenter's shop and was converted into 2 dwellings in the 1970s.

An aisled former coach house and granary of coursed rubble stone and slate roof. In the gable-end N front is a wide segmental arch with freestone voussoirs, now infilled with glazing. Above it is a segmental-headed former doorway converted to a window, with pulley block above it. In the lean-to aisles is a doorway to the L blocked and converted to a small window, and a replacement glazed door to the R. The L (E) side wall has openings introduced when it was converted for domestic use: a recessed door with window to its L, a low raked roof dormer to the aisle, skylights to the main range, and 2-window extension to the L end. Likewise the R (W) side wall has modern openings: 2 small windows in deeper, partly blocked earlier openings, and 2 skylights. The 2-window rear (S) gable end has replacement windows under original timber lintels and a loft pitching eye.

Modernised interior.

Listed, notwithstanding alteration, for its special historical interest as an integral component of the original planned town, where it fulfilled an important economic role. The building retains some distinctive character giving evidence of its original use, and contributes to the historical integrity of the town.

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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