History in Structure

This site is entirely user-supported. See how you can help.

Cow Shed at Ynysmaerdy Farm (formerly stores of Llantrisant Colliery)

A Grade II Listed Building in Llanharan, Rhondda Cynon Taff

We don't have any photos of this building yet. Why don't you be the first to send us one?

Upload Photo »

Approximate Location Map
Large Map »


Latitude: 51.5478 / 51°32'51"N

Longitude: -3.3967 / 3°23'47"W

OS Eastings: 303250

OS Northings: 184131

OS Grid: ST032841

Mapcode National: GBR HN.FLBM

Mapcode Global: VH6DX.2CNB

Plus Code: 9C3RGJX3+48

Entry Name: Cow Shed at Ynysmaerdy Farm (formerly stores of Llantrisant Colliery)

Listing Date: 7 October 1994

Last Amended: 14 November 2000

Grade: II

Source: Cadw

Source ID: 15840

Building Class: Agriculture and Subsistence

Location: Located at the N end of the former colliery engine hall.

County: Rhondda Cynon Taff

Community: Llanharan

Community: Llanharan

Locality: Ynysmaerdy

Traditional County: Glamorgan

Tagged with: Cowshed

Find accommodation in


Llantrisant or Ynysmaerdy Colliery was established by the Powell Duffryn Steam Coal Company after World War I. It closed in 1942 following an underground explosion. It was constructed on the efficient modern model developed by the Powell Duffryn Company, with a single engine hall containing the main power equipment needed on the surface. The site is a particularly complete and impressive colliery complex, containing the engine hall, workshops and stores, ruined offices, a separate winding engine house, railway lines, tips, a long revetment wall, a reservoir, and an explosives store. It was associated with the planned housing estate at Ynysmaerdy.

The stores was probably originally a winding house, the upper floor for storage being a later addition to the building.


The stores is a single-storey gabled building in coursed rubble sandstone with red brick dressings. There is a slate roof with sawtooth terracotta ridge tiles and former glazed rooflights now replaced by corrugated iron sheets. The building is 8 bays long, the penultimate bays at each end to the front (E) elevation containing doorways. To the R of centre the window has been removed for double doors beneath a small opening, possibly for a winding cable. The windows have segmental heads with deep, dentilled surrounds and pronounced keystones, all in red brick, in typical Powell Duffryn house style. They have metal frames, 6 panes by 6. Red brick has also been used for the quoins and a deep eaves cornice.


The interior has remains of a spine wall and joist holes for a first floor, both of which appear to have been inserted after the original construction of the building.

Reasons for Listing

Listed as a fine example of a Powell Duffryn workshops and stores, and for group value in this unusually complete and impressive colliery complex.

External Links

External links are from the relevant listing authority and, where applicable, Wikidata. Wikidata IDs may be related buildings as well as this specific building. If you want to add or update a link, you will need to do so by editing the Wikidata entry.

Recommended Books

Other nearby listed buildings

BritishListedBuildings.co.uk is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact BritishListedBuildings.co.uk for any queries related to any individual listed building, planning permission related to listed buildings or the listing process itself.

British Listed Buildings is a Good Stuff website.