 In the late 1960s Andersons was responsible for the Captain Cook Wing of the Art Gallery of NSW and Parramatta Court House and Police Station.Between 1972 and 1985 as Principal Architect Special Projects, later Assistant Government Architect, he was responsible for the NSW Parliament House Project, additions to the State Library of NSW, the Ryde College of Catering and Hotel Administration and Riverside Theatres Parramatta as well as a number of regional art galleries.From 1984-1988 he led a team of architects and consultants on the upgrade of the public realm of Macquarie Street and Circular Quay, including the design of the Sydney Opera House forecourt and lower concourse.