Which architect completed the interior design after Jørn Utzon left?

Peter Hall completed the interior design of the Sydney Opera House after Jørn Utzon left.

Hall was appointed design architect in 1966 as part of the Hall, Todd and Littlemore partnership. His responsibility was not simply to decorate finished rooms: many crucial questions about seating, acoustics, stages, circulation and enclosing glass walls were still unresolved.

Hall reorganised the interior programme after studying performance venues in Europe and the United States. He concluded that opera and concert music required different conditions, helping shape the decision to create separate principal halls. He also worked with specialists on acoustics, theatre planning, structure and construction.

His team developed the interiors, including the Concert Hall and Opera Theatre, the plywood cladding and distinctive colour schemes. Hall also commissioned John Coburn’s monumental theatre curtains, the Curtain of the Sun and Curtain of the Moon. Lionel Todd handled contract documentation, while David Littlemore focused on construction supervision, so Peter Hall is the canonical answer for the interior and design role.

The completed building opened in October 1973, five years after Utzon’s departure from the project.