Building 17, former fitting shop at Elsecar Central Workshops

Building 17, formerly the fitting shop at Elsecar Central Workshops, was constructed in the 1850s for Earl Fitzwilliam and renovated in 1990 as part of the Elsecar Heritage Centre.

The building is made of well-dressed, coursed sandstone with deep horizontal tooling, while the inner wall facing is mainly brick. It features Welsh slate roofs. The layout includes a tall central nave with large locomotive access points at both ends and lean-to side aisles. The eastern aisle is cut short to accommodate the adjoining boiler house, chimney, and engine house, which are listed separately.

On the exterior, the side aisles consist of ten bays on the western side and seven bays on the eastern side, with regularly spaced, recessed, round-arched windows linked by a string course at the impost level. The western aisle has a nearly central double door replacing one of the windows. The walling of the nave above the aisle roofs is blind but divided by simple pilasters. A short stone-built chimney rises from the southern end of the western aisle. The rebuilt gable ends are quoined, raised, and coped, each featuring a central large round-arched entrance with a circular ventilation opening high in the gable above. Above this, there is an 1850 date stone with an inscribed plaque below. The northern plaque reads "A stitch in time saves nine," and the southern plaque states "A place for everything and everything in its place," both of which are reproductions from 1990.

Inside, the nave and side aisles are separated by arcades of cast iron columns that support round brickwork arches. The timber roof structure, consisting of queen post trusses, is exposed. There is also a small, low arched opening leading to the former boiler house.