c1820-30 Dockyard Guardhouse. Single storey rectangular plan with rear range and courtyard built hipped slate roof. RJC.Thomas 29.11.93.,

The building has an integral porch/canopy on the north side, supported by cast-iron pillars and lintels.
Described as Guardhouse on Admiralty plan of 1856 but as Foreman's Office on Admiralty plan of 1869. (DJP 06/02/1998)