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Cof Cymru: National Historic Assets of Wales · Wales

Ty Mawr (Great House)

St. Nicholas and Bonvilston, Vale of Glamorgan, Wales

The record

Designation
Listed building, Grade II
Broad class
Domestic
Date of designation
28 January 1963
Locality
Bonvilston
Community
St. Nicholas and Bonvilston
Unitary authority
Vale of Glamorgan
Country
Wales
Coordinates
51.45705, -3.34760
Cadw reference
13603

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

Prominently situated on S side of A48, opposite parish church.

C16 origins and late-Georgian remodelling.

House of early C19 date of two storeys and double pile plan with slated valley roof and stuccoed elevations, four gable end rendered stacks. Front elevation of three bays, approximately symmetrical with central doorway. Distinctive front portico carried on Ionic pillars with flat entablature, later four panelled front door. Horned 12 pane sash windows, the stair window to centre is set at a slightly lower level, again with horns set within reveals. The stair window has diamond leaded light and C19 coloured glass. Rear elevation has similar C19 sashes, rear W reception room has square Edwardian bay, whilst E reception room has a three sided bay. Single storey lean-to extension to W side elevation. W side of house an early C19 coach-house (now modified) and stable block which flanks the highway, each of variously rendered and limewashed rubble elevations, with slated roofs. The stable block has a gable stack at the E end.

A fine historic interior of strong early C19 character remains. Symmetrical plan of front and rear reception rooms flanking a central hallway with original dog leg staircase with stick balusters and closed string, scrolled mahogany handrail with grained finish. Four panelled door beneath stair to cellars. The hallway has a Victorian encaustic tile floor and six panelled doors with panelled doorcases, being centrally subdivided by a plaster archway with raised and fielded panels. Servant stair rises from W side of hallway between front and rear rooms to first and second floors. Front W room retains original C19 kitchen fittings with glazed rear doorway to scullery with rectangular fanlight over. Each with fine glazing bars. Mid C19 fire surrounds to ground floor and simple contemporary cornices and skirtings of various designs. Rear E reception room has a matt black slate fire surround with scrolled corbels and moulded jambs. Front W and rear W rooms have exposed large ceiling beams with broad chamfers of C16 type, no stops exposed. Other rooms have plain plastered ceilings. First floor follows similar plan to ground, with rear room at end of hallway being subdivided to form two bathrooms. Two W rooms have doorway to servants stair. All rooms have four panelled doors within panelled doorcases. First floor hallway similarly divided by large plaster archway with raised and fielded panels. Regency grates surviving within front E and rear W rooms, the remainder are later C19. Simple cornices and skirtings to all first floor rooms. Attic not inspected.

Listed grade II as an unaltered example of an early C19 house incorporating an earlier house. Notable for its intact C19 character.

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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