He was educated at St Peter's College, also taking classes at the South Australian School of Arts and Crafts.
[3] In 1937 he won a competition for design of a low-cost pair of attached houses for the South Australian Housing Trust, which became the first of several designs for "austerity" family homes, which with inversions and other variations totalled 150 "Cowell home" designs,[4] realized as part of Premier Playford's plan to convert South Australia from a dependence on diverse rural production to a centralized industrial State, by attracting young skilled migrants from the UK and Europe.
He created the massive bas relief fountain sculpture Fire and Earth, a feature of the pond at Windsor Green, Elizabeth.
[5] He created the sculpture The Rainmakers, the first major public artwork in South Australia to depict traditional Aboriginals, sponsored by Eugen Lohmann of Remscheid-Lennep, West Germany, and unveiled at Christies Beach on 21 May 1965.
He died of a cerebral haemorrhage on 19 August 1981 at Toorak Gardens and was buried in the cemetery at St Jude's Church, Brighton.