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Tregoyd Mill House

A Grade II Listed Building in Gwernyfed, Powys

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Latitude: 52.0323 / 52°1'56"N

Longitude: -3.1814 / 3°10'53"W

OS Eastings: 319047

OS Northings: 237761

OS Grid: SO190377

Mapcode National: GBR YY.G5GY

Mapcode Global: VH6BP.S5YV

Plus Code: 9C4R2RJ9+WC

Entry Name: Tregoyd Mill House

Listing Date: 15 December 1995

Last Amended: 15 December 1995

Grade: II

Source: Cadw

Source ID: 17068

Building Class: Industrial

Location: Located at the N end of the hamlet of Tregoyd, at the NE side of the small brook from Tregoyd Common to the Wye at Aberllynfi.

County: Powys

Community: Gwernyfed

Community: Gwernyfed

Locality: Tregoyd

Traditional County: Brecknockshire

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A corn mill of the early-mid C19 or earlier, serving the locality, utilising two separate water courses supplying a millpond at high level. The mill, originally of 2 bays, was extended beyond the gable stack by a further bay in brick in the later C19, and the mill was refitted in the early C20. It ceased to grind corn c1920-30, becoming a sawmill which operated into the 1960's.


Rubble stonework, colourwashed to front, and with a slate roof. Two storeys, with overshot wheel at the W end. Lean-to porch at E end, and c1965 timber windows. The water was piped to a delivery cistern at high level, by Maund of Brecon, discharging over the iron wheel with curved buckets, and exhausting through an underground culvert to a ditch on the N side of the mill.


The interior has a back-to-back stack between the first and second bays, and newel stair behind the stack entered from the added first bay. Heavy timber lintel over the original gable fireplace in the second bay. The third bay, beyond a timber screen, contains the surviving mid-C19 machinery; a fruitwood-cogged iron pit wheel engaging an iron wallower on a multi-facetted vertical shaft, driving two underdrift stones through iron stone nuts. At the side of the machinery, a mill stair to the upper floor, containing one pair of French burrs in position, the other pair, also of quartzite, remain on site. Timber tentering gear and remains of sack hoist machinery, and of a belt drive for a boulter.

Reasons for Listing

Included as of interest in retaining much of the mid C19 machinery.

Recommended Books

Other nearby listed buildings

  • II Barn at Pen-twyn
    Located off the minor road from Aberllynfi Three Cocks to Tregoyd Mill, on the N side of the tributary of the Afon Llynfi which feeds Tregoyd Mill. The barn lies at the end of the farm access, on the
  • II Llwynbarried Farmhouse
    The house stands adjacent to modern farm buildings in open countryside 900 metres SW of Ffordd-las road junction.
  • II Llwynfilly
    The former farmhouse stands in open countryside to SW of Llanigon, at the end of a narrow track leading to the house and farm buildings.
  • II Windsor Castle Cottage (Ty twyn)
    Located on the elbow of the lane from Felindre and Tregoyd, climbing on to Tregoyd Common.
  • II Outbuilding at Tir Uched
    Located on a separate driveway from the main road entrance, to the S of the rear of the house.
  • II Tir uched
    Located on a minor road leading due east from Treble Hill, Glasbury in the direction of Llanigon.
  • II Boundary walls, gatepiers and gate to forecourt and driveway at Old Gwernyfed
    The gate piers are set at the road end of the main approach driveway to the Grade I Old Gwernyfed, with the boundary walls extending either side.
  • II Former Barn and Cowhouse Ranges Adjoining Old Gwernyfed House
    A group of farm ranges around an elongated farmyard prominently sited along the Talgarth to Felindre minor road, and immediately adjoining the outer front garden and driveway approaching Old Gwernyfed

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