Historic building recording by A Williamson of ASE. Two structures were recorded prior to their demolition. Both buildings were located within an area where gunpowder manufacture on the Chilworth Gunpowder Mills site had originated in the 17th century. However, later development had apparently removed any evidence of such early activity and the site and structures fell outside the area of the Scheduled Monument. The recording work revealed that the two buildings were of mid-–late 19th century origin – comparatively late in the development of gunpowder working on the site – with no traces of earlier structures surviving.