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Ty-Isaf Farmhouse

A Grade II Listed Building in Bedwas, Trethomas and Machen (Bedwas, Tretomos a Machen), Caerphilly

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Latitude: 51.6091 / 51°36'32"N

Longitude: -3.212 / 3°12'43"W

OS Eastings: 316164

OS Northings: 190722

OS Grid: ST161907

Mapcode National: GBR HW.9YK5

Mapcode Global: VH6DM.8TSC

Plus Code: 9C3RJQ5Q+J5

Entry Name: Ty-Isaf Farmhouse

Listing Date: 23 November 1961

Last Amended: 8 February 1999

Grade: II

Source: Cadw

Source ID: 13545

Building Class: Domestic

Location: On a platform site to NE of Mynydd Dimlaith and above Cwm-y-bwch to SE. Reached N along an irregular track from cross roads at Pandy Mawr, about 1 km W of Bedwas Parish Church.

County: Caerphilly

Community: Bedwas, Trethomas and Machen (Bedwas, Tretomos a Machen)

Community: Bedwas, Trethomas and Machen

Locality: Cwm-y-bwch

Traditional County: Monmouthshire

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Partly a sub-medieval gentry house belonging historically to the well-known Davies family of Gelli-Groes (Mynyddislwyn) and Ty-Isaf (formerly Ty-isha). Shown on the 1841 Tithe Map in its present form.
The house was modernised, presumably including the addition of the big S range, by the well-known Dr Joseph Davies (1793-1873), who kept a famous pack of Welsh hounds. Dr Davies' life is celebrated in the Welsh poems of Gwilym Ilyd and he was an active JP as well as living a humane life as " the baron of Bedwas". Dr William Price of Llantrisant attended him when Dr Davies died suddenly near Newport railway station. He is commemorated on a wall monument behind the pulpit in Bedwas Church.


T-plan gentry house, roughcast walling, stone-tiled roofs, end gables with bargeboards (higher eaves to S range) and red brick stacks. Set back entrance front of 2 windows and 2 storeys plus attic; gabled dormer with 6-paned window. All windows are wood-framed with projecting sills; plain right-hand door under tiled lean-to hood. Original entrance is blocked to left of present opening. Stone-walled forecourt. Taller 2-storey 3-window garden elevation with ground-floor masked by later lean-to. Rear (E side) has low sweeping slate roof of dog-leg type with red brick stack to end.


The interior shows clear evidence for the building of Ty-isaf in two main phases: the older building is the lower entrance block which retains sub-medieval detailing and an external battered S wall, now flanking the later main staircase which lies directly in line with the present entrance. Painted timber handrail with turned balusters in C18 style but very widely spaced. Original ground-floor room to left has chamfered beams with broach stops and stop-chamfers to chimney bressumer. Timber roof retains massive A-frame trusses with trenched purlins; the collar beams lie below attic floor level which also has an ancient timber door securing the (formerly) external opening. This secure arrangement reflects the use of Ty-Isaf for a maltster's business with a solid drying floor (concrete?) in this attic storey. Later trusses to S range with dovetailed collar beams and trenched purlins. A modern panelled room has been created in the ground-floor of this range.

Reasons for Listing

This is a substantial gentry house, extensively modernised, but retaining good internal detailing and strong historical associations with Dr Joseph Davies.

Recommended Books

Other nearby listed buildings

  • II Barn at Dyffryn Isaf
    Located off the W side of a lane which runs N along the Rhymney valley from Bedwas to Maes y Cwmmer. Farm-house to the NW.
  • II Pandy Mawr Railway Arch
    The arch runs over the valley road leading N from Bedwas to Cwm y Bwch. Site of Bryngwyn Colliery to the SE.
  • II Former Llanbradach Colliery engineering shops
    Llanbradach Colliery is on the steep hillside to the W of the village. The engineering shops are sited on the E side of the engine hall, at a lower level, and N of the yard and fan house.
  • II Llanbradach War Memorial
    Located in the centre of the village, opposite the site of the demolished parish church, with the recreation ground behind.
  • II Former Llandbradach Colliery workshops range
    Llanbradach Colliery is on the steep hillside to the W of the village. The former workshops are sited at the lower level of the site, E of the fan house.
  • II Former Llanbradach Colliery upper revetment wall
    Llanbradach Colliery is on the steep hillside to the W of the village. The upper revetment wall is sited at the middle level of the colliery complex below the engine hall and winding house.
  • II Former Llanbradach Colliery engine hall
    Llanbradach Colliery is on the steep hillside to the W of the village. The engine hall is on the uppermost level at the NW end of the colliery.
  • II Former Llanbradach Colliery fan house
    Llanbradach Colliery is on the steep hillside to the W of the village. The fan house is sited on the middle level of the colliery, S of the yard and engineering shops.

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