Hugh Macintosh was born in Clapham, London, England in 1874. He was articled to John Hatchard Smith (1853-1926) and studied at University College, London, and at Regent Street Polytechnic, London. He was awarded the Donaldson Prize, Carpenter's Company Prize for Drawing, and Professor's Prize by University College London.
He subsequently practised as an architect first in Clapham and, by 1923 in Croydon, Surrey. He was in partnership with Reginald James Walter Newman (1875-1938), as Macintosh and Newman in the 1920s. They won first place in a competition to design Reigate Municipal Buildings, Fire Station and Police Courts. In the late 1930s Macintosh was senior partner in the firm senior partner in the architectural firm Hugh Mackintosh & Partners.
Macintosh was elected a Fellow of the Royal Institute of British Architects (FRIBA) in 1925. His address was given as 10, The Pavement, Clapham, Wandsworth, London in 1901; 33 Norbury Gardens Melfort Road Norbury, Surrey in 1911; and 1, Imperial Buildings, East Croydon in 1923 and 1939. He died in Surrey in 1950. He was grandfather of the architect Kate Macintosh (1937-?).
Municipal Buildings, Reigate; Froebel Educational Institute, Roehampton; conversion of Mansion for college purposes, and extensions; Crossway Central Mission, New Kent Road: hostel crêche and club rooms; Croham Hurst School for Girls, South Croydon; Croydon business premises: North End, Park Lane, High Street, and George Street. Addington War Hospital, Addington; factories: Cherry Orchard Rood, Croydon, and Kingsland Road, London; automobile showrooms and Works: Cherry Orchard Road, Croydon: factory. Keens Road, Croydon; shop front and alterations, Haymarket, London: cabaret and dance hall and extensions. Greyhound Hotel, Croydon; many private residences at Addington, Shirley, Croydon, Kenley, Reigate, Princes Risborough, Purley, Chipstead, Caterham, etc.; warehouse. Shadwell ; estate development schemes. [Source: Who's Who in Architecture 1926]
Who’s Who in Architecture 1926. Edited by Frederick Chatterton. London: The Architectural Press, 1926
‘Obituary’. The Builder vol. 179,4 October 1950 p. 167