The core of the present Cannon Hall was built at the opening of the 18th century for John Spencer Stanhope, possibly by John Etty of York, more surely with interior joinery by William Thornton, another well-known local craftsman. It was enlarged with the addition of wings in 1764–67 by the premier mid-Georgian architect working in Yorkshire, John Carr. Subsequently the wings were heightened, giving the rather high-blocked mass seen today. The last member of the family, Elizabeth, sold the house to Barnsley Council in 1951.