How much does a building certifier cost?
Private building certifiers in Australia typically charge $400–$1,200 for a small structure and $1,500–$3,000 for a renovation or extension, with new homes running higher.
Typical price band
$1,800typical
$400 low$6,000 high
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Real-world examples
Small structure approval$400 – $1,200
Renovation or extension$1,200 – $3,000
New home certification$2,500 – $6,000
What affects the price
— Project size & value. Fees scale with the build cost and floor area being certified.
— Number of inspections. More construction stages mean more mandatory site visits included in the fee.
— Complexity & documentation. Unusual designs, performance solutions or missing paperwork add assessment time.
— State & council charges. Government lodgement fees and levies sit on top of the certifier's fee and vary by state.
— Re-inspections. Work that fails an inspection triggers extra visits, usually billed per attendance.
Tips before you post
— Engage the certifier before work starts — retrospective approval for unapproved work costs far more.
— Check the certifier is registered or licensed in your state and ask for their registration number.
— Get the inclusions in writing: number of inspections, certificates issued and whether council fees are extra.
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Indicative range only, not a quote. Get quotes from local tradies for an exact price. Last updated 13 July 2026.
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