Outbuilding approximately 10 metres to north of East Wing at Thorp Arch Hall

This outbuilding, dating from around 1750 and altered in the 19th century, is located approximately 10 metres north of the East Wing at Thorp Arch Hall. It was likely designed by John Carr for William Gossip. The building is constructed from coursed magnesian limestone with a Welsh slate roof. It has one storey and originally comprised three bays, though a later extension connecting it to the East Wing is not of special significance. The west side, facing the courtyard behind Thorp Arch Hall, features large quoins and five blind windows set beneath an eaves band, with moulded gable copings on the left. The rear elevation has a door with a deep lintel flanked by casement windows with keyed lintels, and an inserted garage door on the left. A later lean-to addition is present on the left return, featuring a pedimented gable with a blind Diocletian window in the tympanum. Internally, the right-end wall has been removed, and four original roof trusses remain, featuring twin-collared principal rafters. The Diocletian motif is noteworthy, and while typically associated with James Paine who corresponded with Gossip about the house’s design before Carr’s involvement, it’s possible the outbuildings reflect an earlier scheme suggested by Paine, even though it was ultimately executed by Carr. Estate papers at the Leeds City Archives, particularly Day Book 1749-51 (box 21/item 10), provide further context.