Stanley Natusch was born in Wellington, New Zealand on 7 January 1889 and was the son of the architect Lewis Tilleard Natusch (1859-1951) [also known as C. Tilleard Natusch]. He subsequently moved to England and studied at the Architectural Association Schools in London, where he was awarded the AA Diploma. By 1920 he had qualified as an architect and that year was elected an Associate of the Royal Institute of British Architects (ARIBA). In the early 1920s he formed the architectural partnership Curtis & Natusch with Herbert Lewis Curtis (1894-1972). The practice collaborated the architectural firm White & George to design a licensed house for the Worshipful Company of Brewers.
Natusch's address was given as 27, Tanza Road, London in 1923. By 1924 Natusch had returned to New Zealand and was practising in Wellington. His address that year was given as Boulcott Chambers, Boulcott Street, Wellington. By 1930 he was a partner in father's firm, C. Tilleard Natusch & Sons, which had offices at the Huddart Parker Building, Post Office Square, Wellington. He is still listed at this address in the RIBA Kalendar 1939, however, his address was also listed as 15 Clifton Place Hotel Peak Hill, Sidmouth, Devon, England in the 1939 England and Wales Register.