Harbourne Maclennan was born in Ellon, Aberdeenshire, Scotland on 16 December 1871 and was the son of John MacLennan (1903–1969), a land surveyor. He was articled to George Gordon Jenkins (1848?-1923) and George Marr (1844-1899) of the Aberdeen firm Jenkins & Marr from c.1886 to c.1892 and remained with them as an assistant for a further year. He commenced independent practice as an architect in Dunfermline, Scotland in 1895. He returned to Jenkins & Marr as a partner in 1915 and following the retirement of Jenkins in 1921, became sole partner in the firm. He practised alone until 1935 when he took his son, John Maclennan, and William A. Davidson into partnership.
Maclennan was a member of the Aberdeen Society of Architects and its President in 1916-18. He remained in Aberdeen throughout his career as an architect and died in Aberdeen on 27 August 1951.
Torry housing scheme (88 dwellings); Stoneywood housing scheme (62 dwellings); masonic temples at Aberdeen and Peterhead; photographic paper mill, coating factory and offices, for Pirie's Photo Paper Co., Ltd.; Culler paper mills and housing scheme; large additions to the Stoneywood, Woodside, Union, and Valleyfield paper mills; stores and offices, Glasgow, for Messrs. W. McEwan and Co., Ltd. brewers; Maritime Chambers, Central Chambers, and Scottish Temperance Chambers, at Aberdeen [Source: Who's Who in Architecture 1923]
For a detailed chronogical list of architectural projects by Harbourne Maclennan see the Dictionary of Scottish Architects 1660-1980
Directory of British Architects 1834-1914. Compiled by Antonia Brodie, et al. Volume 2: L-Z. London; New York: British Architectural Library, Royal Institute of British Architects/Continuum, 2001