[2] Douglas is probably best remembered for his incorporation of vernacular elements in his buildings, in particular half-timbering,[3] in which he was influenced by the black-and-white revival in Chester.
[4] Other vernacular elements he employed included tile-hanging, pargeting, and the use of decorative brick in diapering and the design of tall chimney stacks.
[7] John Douglas was born in the Cheshire village of Sandiway and was articled to the Lancaster architect E. G. Paley, later becoming his chief assistant.
[9] From an early stage in his career, Douglas attracted commissions from wealthy and powerful patrons, the first of which came from Hugh Cholmondeley, 2nd Baron Delamere.
Douglas designed a large number and variety of buildings in the family's Eaton Hall estate and the surrounding villages.