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Cof Cymru: National Historic Assets of Wales · Wales

Cwm Mawr Farmhouse

Llanfoist Fawr, Monmouthshire, Wales

The record

Designation
Listed building, Grade II
Broad class
Domestic
Date of designation
15 March 1996
Locality
Cwm Llanelen
Community
Llanfoist Fawr
Unitary authority
Monmouthshire
Country
Wales
Coordinates
51.78116, -3.03609
Cadw reference
17247

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 1636 "Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ..." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

Sited high up above the mountain lane to west of Coed-y-Prior and reached from by-roads west off the A 4042. Set into the hillside.

c1590 regional farmhouse given a fine early C17 enlargement. Recently renovated. Said to have medieval monastic associations but surviving fabric is no earlier than sub-medieval.

Whitewashed rubble farmhouse wth slate roofs and stone end chimney stacks; renewed leaded casement glazing. The earlier part is uphill with 3-windows to the present, east facing, front and an added gabled porch. The impressive later phase is a tall 2-storey and attic block with a massive stair projection and a pair of diagonally set chimney stacks to the downhill gable end; renewed 4-light windows to the principal rooms. Blocked doorway.

The best-preserved part of the house is the C17 addition which fits into what Fox and Raglan describe as the 'Reserved Chamfer Phase'. Fine stone fireplace to former hall with stop-chamfered jambs and split lintel; another fireplace retains the adjacent spice cupboard. Sunk-chamfered and Wern Hir stopped ceiling beams and, unusually, diagonally set cross beams to former cross passage; screens partition now removed. The staircase tower contains an imposing square stairwell with stone flights up to the Great Chamber and down to the cellar; the existence of a stone staircase would seem to place the enlargement earlier in the C17 rather than later when oak staircases were more usual in houses of this type. The stair tower has a deeply splayed recess to former window and another deeply splayed lancet at the base, now lighting a bathroom. A secondary staircase leads up from the Great Chamber to the attic. The finest surviving features of the interior are the surviving ornate doorheads with ogee and double roll-mouldings; one of these is to the Great Chamber but the other is unusually in the attic and apparently in-situ. The C17 roof is of 3-bays with pegged A-frame trusses with tenoned collars and two tiers of trenched purlins; one attic window has a reeded surround to splay. The early part has upper-cruck trusses but is otherwise largely altered.

Listed as a fine example of a sub-medieval regional house.

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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