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Cof Cymru: National Historic Assets of Wales · Wales

Offis Fawr (now Woodcraft Centre)

Llanddeiniolen, Gwynedd, Wales

The record

Designation
Listed building, Grade II
Broad class
Industrial
Date of designation
4 November 1999
Locality
Gilfach Ddu
Town
Caernarfon
Community
Llanddeiniolen
Unitary authority
Gwynedd
Country
Wales
Coordinates
53.12130, -4.11429
Cadw reference
22658

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David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1896 "Sheet 7. Ordnance Survey of England and Wales." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

Located immediately to the east end of the north range of the former Dinorwic Slate Quarry workshop complex, the building is situated high above the workshops on a quarried outcrop; flight of slate steps on north side leads down to workshop area.

Apparently built contemporaneously with the quarry workshop complex in c1870, the building housed the company offices, the purpose of the verandah abutting the structure on its north and east sides being to offer the quarrymen some protection from the weather as they queued to receive their wages. The building was in use as a timber workshop at time of Survey.

High single-storey double-depth plan of 2 parallel ranges aligned roughly east-west with continuous slate-roofed verandah to north and east sides. Snecked rock-faced rubblestone with tooled granite quoins and other dressings; gable-ended slate roofs with slate coping and fretted bargeboards with carved pendants and finials. East (entrance) elevation has central 4-panel door flanked by 12-paned sashes in quoined surrounds, one to each range, under lean-to verandah supported on cast-iron columns with decorated spandrels. North side has continuation of verandah over three 16-paned sash windows, detailed as on east side; 2 regularly spaced stacks behind ridge have stone bases with octagonal brick shafts and stone capping; verandah has large rooflights as on east side; slate-stone retaining wall in front of verandah has fleur-de-lys pointed iron railings to top. South elevation has four 16-paned sashes, one on left and 3 grouped to right; ridge stack to left is similarly detailed to those on north but with paired shafts.

Interior not accessible at time of Survey but said to be much remodelled; noted as retaining panelled window shutters.

Included as a well-preserved late C19 quarry company office building of distinctive character and appearance, an integral part of the complex of buildings and other structures surviving at the former Dinorwic Slate Quarry.

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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