 Elizabeth Bay House provides a key example for the study of architectural patronage, domestic design and its sources in NSW.The attribution of the complete design to John Verge remains inconclusive, with Macleay's role as a client and possible unidentifiable British architect, British architectural pattern book sources and the work of James Hume and John Bibb requiring further research.Elizabeth Bay House has had a significant, albeit limited, impact on the architecture of NSW and the appreciation of colonial buildings through the developing conservation movement.