Geoffrey Henry Lupton was born in Leeds, Yorkshire, England on 2 September 1882 and was educated at Bedales School in Steep, near Petersfield, Hampshire. After leaving school he served an apprenticeship with his family's engineering firm, Hathorn Davey, in Leeds. and was engaged in the construction of pumping stations in the Lea Valley around 1903-04 and working in Germany. He left the company in 1905 to train as a cabinetmaker, architect and builder with Ernest Gimson (1864-1919) in Sapperton, Gloucestershire. A cabinet in English walnut made by Lupton to a Gimson design was exhibited at Arts & Crafts Exhibition Society exhibtion in London in 1906.
Lupton's time with Gimson appears to have been brief as with a year he had returned to Hampshire where he embarked primarly on a career as an architect and builder, the occupation he gave in the 1911 England and Wales Census.
Until the mid-1920s Lupton continued to make furniture. He passed this side of his business to Edward Barnsley in 1925 and in February 1926 moved to South Africa, where he purchased some hundred acres of veldt near Elgin, on the Palmiet River, 50 miles from Cape Town. He sold the farm in 1937 and returned to England
In 1939 he bought North Wyke Farm, near North Tawton in Devon which he worked during the Second World War. In 1946 he bought a narrow boat in Chiswick, Middlesex and began to live on it.
In 1948 Lupton emigrated to Southern Rhodesia. He died in Maronera, Southern Rhodesia on 30 December 1949 following an encounter with a bull.
Projects on which Lupton worked included the timber bridge at Hampton Court Palace, Richmond upon Thames Surrey, under the direction of Ernest Gimson (1906); his own house in Cockcroft Lane, Froxfield, Hampshire (1906-07); the building of The Red House in Froxfield, Hampshire (1909), designed by Alfred Alfred Powell for the poet Edward Thomas; the building of the the Assembly Hall at Bedales School, designed by Gimson (1911); the building of the Memorial Library at Bedales School (1911-c.1921), dinesigned by Gimson, and largely financed by Lupton; and the design and building of "Dewdney" at Shere Heath, Surrey (1913) for Sir Francis Ogilvie
Drury, Michael. Wandering Architects. In Pursuit of an Arts and Crafts Ideal. Donington: Shaun Tyas, revised edition, 2016 [Donington: Shaun Tyas, revised edition, 2016 [Chapter 8. Three Builder-architects. Herbert North, Geoffey Lupton & Harold Falkner pp. 169-194]