How do I accurately estimate residential building costs per square metre?

A rate per square metre is only a rough early check, and no single rate is accurate across Australia. Rates change over time and vary with location, design, site conditions, finishes and what is included, such as site works, utility connections, approvals, fees and external works. Do not rely on a figure from an article. Use published cost guides, a quantity surveyor, and written quotes from builders and trades, and always check what each rate includes and excludes. Replace rates with accepted quotes as soon as you have them.

In MyBuildHub: enter your estimate as the starting budget, mark each line as an estimate or a firm quote, and replace estimates with quotes so the forecast improves as the project progresses.

Check yourself: a quantity surveyor, a current Australian construction cost guide, and written quotes.

General information only. It is not financial, tax, insurance or legal advice and may not apply to your project. Speak to your lender, accountant, insurer or a lawyer, and confirm requirements with your state regulator.