The property boundaries that this polygon follows about its perimeter have been established since at least the 1850s. At this time the site was occupied by just two properties - one on the frontage of Tannery Street (the extant no. 1 Birks Avenue, called Tannery House on earlier mapping), and a square building in the centre of the site, (which developed into the large 'Tannery' complex shown on the 1891 25 inch mapping of Woodhouse). N.B. Conservation black and white photo 21089/11 shows 'Old Tannery' (no 1 Birks Avenue) in detail with a probable c1700 century hall wing running perpendicular to the main road with the main solar frontage probably dating to a later ?19th century rebuild. This hall and solar t-shaped plan is typical of medieval town houses. Other evidence pointing to a 17th -18th century date for the rear range are a 'sub-medieval' square hood mould around a doorway, chimney stacks placed along the ridge of the roof and horizontally sliding 'Yorkshire sash' windows (general information on vernacular architectural details from Brunskill, 1987) The tannery is depicted until 1905. On the 1923 OS 25 inch sheet the tannery has been demolished and the curved terrace now standing on Birks Avenue constructed along with the short block of housing on the former gardens to the west of Tannery House. Partial legibility of 19th century tannery complex and attached house from the surviving Tannery.