History in Structure

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The Gaer

A Grade II Listed Building in Forden with Leighton and Trelystan (Ffordun gyda Tre'r-llai a Threlystan), Powys

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Latitude: 52.5886 / 52°35'18"N

Longitude: -3.1688 / 3°10'7"W

OS Eastings: 320916

OS Northings: 299619

OS Grid: SO209996

Mapcode National: GBR 9Z.B2HC

Mapcode Global: WH7B2.969B

Entry Name: The Gaer

Listing Date: 26 October 1953

Last Amended: 20 March 1998

Grade: II

Source: Cadw

Source ID: 7708

Building Class: Domestic

Location: Located on a river terrace overlooking the valley of the River Camlad to the SE, at the southern end of the community.

County: Powys

Community: Forden with Leighton and Trelystan (Ffordun gyda Tre'r-llai a Threlystan)

Community: Forden with Leighton and Trelystan

Locality: Thornbury

Traditional County: Montgomeryshire

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The Gaer is an important site, taking its name from the Roman fort placed in the fields below. The present building is of the mid-late C18 perhaps reworked in early C20.


Roughcast brick with slate roofs. Two storeys, a main-NE-SW range containing the main reception rooms, with a short rear wing at each end. The main SE front is of 5 bays to rhythm a-b-a-b-a, with tripartite 12- and 9-pane sash windows in the bays a, the upper windows provided with louvred shutters. The second bay has a pedimented doorcase, with a 6-panel beaded door and a rose on the entablature fascia, and 9-pane sash window to the first floor above. A later glazed door with a pediment is now set in the second bay b. The central 3 bays have, above the moulded cornice, a triangular pediment with a small central oculus. Gable stacks of brick with yellow clayware pots. A similar stack is placed centrally at the rear of the main range. Nineteenth century 12-pane sashes to the rear range and gable stacks. Offset, and attached to the NE end is a parallel 2-bay building of painted brick with a gable stack, and C19 paned timber windows with cambered heads to ground floor.


Not accessible at the time of inspection (October 1996).

Reasons for Listing

Included as a fine example of a stylish C18 building for a major farm in the area.

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