Chapman was born in
Enfield, London. He married and emigrated to South Australia, arriving in Adelaide around 1854 and started working as a carpenter for Beeby & Dunstan, millers, of
Grenfell Street, and had a residence in the city. He was involved in the construction of
Charles Todd's telegraph line to Port Adelaide in 1856, the MacDonnell Bridge over the
Torrens to
Paradise (opened 1857), and the
Glenelg jetty (opened 25 April 1859). He also worked for the Railways. He established himself as a builder and contractor, with an office in Roberts Street, later in
Hutt Street. He worked on a wide range of prestigious projects, frequently for architect
Daniel Garlick: • 1869 servants' quarters at Government House • 1870 "superior residence" for
Frank Rymill on East Terrace • 1870 Northmore's drapery, on part of the DaCosta bequest to
St Peter's College • 1870
Pulteney Street School additional building • 1871 Four shops on Gawler place for
Alexander Dowie; houses on Wakefield Street for
T. English and Thomas Gattey Brown • 1872 Northmore's shop remodelled and doubled in size • 1872 Brown & Woods' store on
Waymouth Street • 1872 Several two-storey houses for T. English in Wakefield Street, one for C. Glover on Gilles Street, two for C. Wadey in Franklin Street, one for S. Whitmore on South Terrace, ... • 1873 J. Calder's biscuit factory on
Twin Street, • 1874 rebuilt the guardhouse to Government House and gateway. • 1875 Parliament House extensions • 1875 Norwood and Kensington Institute • 1876 further expansion of Northmore & Deans emporium, Rundle Street, also part of
Wills & Co.'s store on Rundle Street. • 1877 an Oyster saloon for G. Moseley and the Crown and Sceptre Hotel for A. Hubble, both on King William Street, also a store and factory on Waymouth Street for
Bickford & Sons • 1877 Morialta Chambers in Victoria Square and Waymouth Chambers on Waymouth Street • 1878 Torrens Chambers, adjacent Morialta Chambers on Victoria Square. • 1878 Academy of Music, Rundle Street • 1878
Charles Birks emporium, Rundle Street Each year he held a Christmas get-together of his workers, usually 20 or thirty men, for lunch with their families. Around 1880 he quit the building business. He invested heavily in land during the boom with some success at first, later lost a great deal, and quit business. He became a partner in W. F. Gray and Co. (with Frederik William Gray and Henry Snelling), plumbers and sheetmetal workers at the corner of Grenfell and Hyde streets, which he took over in 1891, retaining the name. The company began manufacturing "Snelling & Chapman's Little Gem Spray Pump". In 1908 Snelling sued Chapman for unpaid royalties on the device. By 1904 Chapman had taken his son Allan Chapman into partnership. His son enlisted with the 1st AIF on 5 October 1915, giving occupation as "Master Plumber", served with the 43rd Battalion, gunshot wound January 1917 rendered him paraplegic, died at 7 AGH, Keswick, South Australia on 6 September 1917. Their son Private Alfred George Chapman (born 1899) died of wounds 18 April 1918. ==Other interests==