Pre-purchase building inspection explained

Why do I need a pre-purchase inspection?

A pre-purchase building inspection is your most important safeguard when buying a property. It identifies defects, safety hazards, and maintenance issues before you're legally committed to the purchase, giving you the chance to:

• Negotiate a price reduction based on repair costs
• Request the seller fix major defects before settlement
• Walk away if the property has serious structural problems
• Budget for future repairs and maintenance

In most Australian states, you have a cooling-off period (typically 5 business days, though this varies) during which you can withdraw from the contract with limited penalty. The inspection should happen during this window.

When should I book my inspection?

Book as soon as your offer is accepted — ideally within 24 to 48 hours. Inspectors can be booked out, especially in busy markets, and you need the report back with enough time to act before your cooling-off period expires.

State-specific cooling-off periods

• Queensland: 5 business days (can be waived if you sign a waiver)
• New South Wales: 5 business days for houses, 10 business days for off-the-plan purchases
• Victoria: 3 business days for residential property
• Western Australia: No statutory cooling-off period (must negotiate a "subject to building inspection" clause)
• South Australia: 2 business days
• Tasmania: No cooling-off period for auction purchases
• ACT: 5 business days

Important: At auction, there is usually no cooling-off period in any state. If you're bidding at auction, book your inspection before auction day.

What happens during a building inspection?

The inspection typically takes 2 to 4 hours, depending on the size and age of the property. The inspector will:

1. Walk through every accessible room and area
2. Access the roof space (if safe and accessible)
3. Inspect the subfloor (if accessible)
4. Check the exterior, including the roof from ground level
5. Test a sample of electrical outlets, taps, and fixtures
6. Use moisture meters and thermal imaging (in some cases) to detect hidden damp
7. Take photographs of all defects and areas of concern

You don't need to be present, but it's highly recommended. The inspector can point out issues in person and explain their significance, which is far more useful than reading a 40-page report alone.

What's included in the inspection report?

A typical inspection report includes:

• An executive summary of major defects and safety hazards
• Detailed findings by area (roof, exterior, interior, subfloor, etc.)
• Photographs of every defect
• Categorisation: major defect, minor defect, or safety hazard
• Recommendations for further specialist reports (e.g., structural engineer, electrician)
• A limitations section noting areas that couldn't be accessed

Most reports are delivered within 24 hours, often the same day. If you're on a tight cooling-off deadline, confirm turnaround time when booking.

How do I use the inspection report?

If major defects are found

1. Get quotes for repairs. Ask licensed trades for estimates — this gives you a dollar figure for negotiation.
2. Negotiate with the seller. Request a price reduction, ask them to fix the issues before settlement, or agree to meet halfway.
3. Request a specialist follow-up. For structural cracks, termite damage, or major electrical issues, the report may recommend an engineer or pest controller. Do this before the cooling-off period ends.
4. Walk away if necessary. If the property needs $50,000+ in structural repairs and the seller won't budge, it's often better to withdraw and forfeit the cooling-off penalty (typically 0.25% of the purchase price) than to proceed.

If only minor defects are found

Minor defects — like cracked roof tiles, peeling paint, or a dripping tap — are normal, especially in older homes. You can:

• Budget for these repairs after settlement
• Negotiate a small price reduction if there are many minor issues
• Proceed with confidence, knowing there are no major structural problems

Building vs building & pest: which should you choose?

Most buyers book a combined building and pest inspection. Termites and timber pests can cause tens of thousands of dollars in hidden damage, and a separate pest inspection only adds $100 to $200 to the total cost.

You should always include a pest inspection if:

• The property is in a termite-prone area (most of Australia, especially coastal and humid regions)
• The building has timber framing or timber subfloor
• The property is more than 10 years old
• There's landscaping, timber fencing, or timber retaining walls close to the house

How much does it cost?

Typical costs for a combined building and pest inspection:

• Small unit or apartment: $350–$500
• 3-bedroom house: $450–$650
• Large or multi-storey house: $600–$900

Costs vary by state, property size, and accessibility. See our full cost guide for detailed pricing by state.

Common mistakes to avoid

• Booking too late: Leave yourself at least 2 to 3 days between receiving the report and the end of your cooling-off period.
• Not attending the inspection: Seeing defects in person helps you understand their severity.
• Skipping the pest inspection: Termite damage can be catastrophic and is not covered by a building inspection alone.
• Using an agent-recommended inspector: This can create a conflict of interest. See our guide on independent vs agent-recommended inspectors.
• Ignoring the limitations section: If the subfloor or roof space was inaccessible, hidden defects could exist.

Next steps

Ready to book? Get up to 3 quotes from licensed, insured inspectors in your area, or browse our inspector directory by city and suburb.