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TL;DR Australian construction costs in 2026: project homes $1,800–$2,400/m², custom builds $2,400–$3,500/m², architectural $3,500–$6,000/m². Add $20–$50k site costs, $5–$15k council fees, $8–$25k services connection, and 10–20% contingency. Sydney is the most expensive metro, Adelaide the most affordable. A realistic 200m² custom build budget is $560k–$800k all-in. Key stats for Australian builders (2026) $2,400–$3,500/m² Custom build […]