Sydney Jaques was born in Forest Gate, Essex [now London], England in 1884 and studied at the Worshipful Company of Architects in London. He worked as an assistant to Francis John Sturdy in London from 1899 to 1901, and to William Muskett Yetts in London from 1901. In 1899 he qualified as an architect and in 1907 was elected an Associate of the Royal Institute of British Architects (ARIBA) in 1907. From c.1910 and at least 1915 he was employed as an architect in the Public Works Department in Kingston Jamaica. By 1919 he had returned to England. Together with the architect Henry Tanner (1876-1947) he designed the London Shoe Co.'s branch in Sloan Street London in c.1934.
His address was given as 34 Hamfrith Road, West Ham, Essex [now London] in 1901; 143 Osborne Road, Forest Gate, Essex [London] in 1907; 113 Claremont Road, Forest Gate, Essex [now London] in 1908 and 1909; 45 Bective Road, Forest Gate, Essex [now London] in 1919; "Wltcot", Worrin Road, Shenfield, Essex. 1923 and 1935; 115-119 Moorgate, London in 1930 and 1935; and "Flamstead", Middleton Road, Shenfield, Essex and 38 Gresham Street, London in 1939. He died in Battersea, London on 25 June 1945.
Directory of British Architects 1834-1914. Compiled by Antonia Brodie, et al. Volume 1: A-K. London; New York: British Architectural Library, Royal Institute of British Architects/Continuum, 2001