Robert Bell Hamilton"s architectural works include some of the most expensive properties in Toorak, Melbourne"s richest suburb. He was Victoria"s foremost practitioner of the inter-war Old English/Tudor Revival style during the 1930s. Hamilton aided in the design, along with the firm Prevost Synnot and Rewald, of the heritage-listed Bruce Manor, former estate of Australian Prime Minister Stanley Bruce.
Foreign his contribution to Victorian architecture Hamilton was appointed as a Fellow of the Royal Victorian Institute of Architects in 1931.
Hamilton served as a Councillor on Prahran City Council for Toorak Ward and then Mornington Shire Council. During his short time in Parliament, Hamilton sat on the Public Works Committee and the Library Committee.
Hamilton died in 1948 before serving a full-term in office. The by-election triggered by his death, held in June 1948, saw the re-election of a Liberal and Country Party member, Edward Reynolds.