Greenlane Archaeology carried out an archaeological building recording of Derby Home, Pathfinders Drive, Lancaster to Historic England Level 3 type standards. The work revealed three main phases of development, all of which can be connected to recorded periods of the building's history. The initial phase of construction in 1912-1913 produced the main part of the building, with large rooms on the south side of both the ground and first floors, and service rooms, offices and bathrooms/toilets to the north. There was a large open space in the centre of the north end, presumably intended to allow access for a cart, perhaps to allow the easy delivery of farm produce or the inhabitants to the building. This was later filled in to create an additional room on each floor, and at about the same time the large ground and first floor rooms were sub-divided and the veranda at the south end was replaced by a flat-roofed glazed extension. These changes probably occurred in the mid-20th century, probably to provide workshops and similar spaces rather than accommodation as the use of the site developed. The most substantial changes after this are the gradual decay of the building, largely due to water ingress through the roof. This probably occurred due to it becoming disused following the closure of the hospital in 1996. When constructed the building would have been quite distinct and a considerable contrast to the Gothic style core buildings of the hospital, being distinctly 'Arts and Crafts'. However, it also incorporated a range of new technological developments such as the use of steel construction in the roof and concrete floors built on iron supports.