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70% of homes have defects

Most are minor — but some are not. Structural issues, termite damage and water ingress can cost tens of thousands to fix after settlement.

Negotiate before you sign

A defect found before settlement gives you power to negotiate a price reduction or walk away. After settlement it's entirely your problem.

For auctions — inspect first

Once the hammer falls at auction you own every defect unconditionally. Always book your inspection before auction day — not after.

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First home buyers who dodged a bullet with NestPath

Everything first home buyers need to know about pre-purchase building inspections in 2026 — what they cover, what they cost, when to book, and what to do if the report uncovers problems.

What Is a Pre-Purchase Building Inspection?

A pre-purchase building inspection is a non-invasive visual assessment of a property's condition conducted by a qualified independent inspector before you sign an unconditional contract. The inspector walks the entire property — interior, exterior, roof cavity, and subfloor where accessible — and produces a written report usually within 24 to 48 hours of the on-site visit.

A standard pre-purchase inspection in Australia covers six major categories:

• Structural integrity — foundations, load-bearing walls, visible cracking, subsidence, slab movement
• Roofing — tiles, metal sheeting, flashing, guttering, sagging, water ingress
• Plumbing — visible pipework, leaks, drainage, hot water system, taps and outlets
• Electrical — switchboard condition, visible wiring defects, non-compliant work, smoke alarms
• Moisture and damp — rising damp, water staining, poor subfloor ventilation, mould risk
• Pest activity — termites, borers, rodents, and conditions that attract them (only on combined building and pest reports)

The report grades each issue as minor, significant, or major, with photographs of every identified defect. You use this report to negotiate the purchase price, request repairs before settlement, or withdraw from the contract. For a deeper walkthrough of what to expect on inspection day, read our building and pest inspection guide.

Building and Pest Inspection Cost Australia 2026

Building and pest inspection costs in Australia vary by state, property size, and the inspector's qualifications. The table below shows typical 2026 pricing for a standard detached house under 250 sqm in each major capital.

What's included in the fee: Site visit by a qualified inspector (2–3 hours on site), full written report within 24–48 hours with photographs, identification of all visible defects graded by severity, and a phone consultation to walk you through the findings.

What's NOT included: Asbestos testing ($80–$200 extra), pool compliance inspections ($150–$300), strata or body corporate document review (separate service), specialist structural engineering reports ($400+), and destructive testing such as opening walls. For larger properties (over 250 sqm) or acreage, expect surcharges of $100–$400 on the prices above.

When Do You Need a Building Inspection?

The timing of your building inspection depends on your state's contract rules and whether you're buying by private treaty or at auction. Always book the inspection before the sale becomes unconditional — once that happens, every defect becomes your problem.

Before exchange (NSW and QLD): In New South Wales and Queensland, most buyers conduct their inspection before exchanging contracts. This is the strongest negotiating position — you can walk away at no cost if the report finds major issues, or use the findings to renegotiate the price before signing.

During cooling-off (VIC, SA, ACT): Victoria offers a 3 business day cooling-off period, South Australia offers 2 business days, and the ACT offers 5 business days. Book the inspection immediately after signing and prioritise a 24-hour turnaround report so you can withdraw (with a small penalty, typically 0.25% of the purchase price) if major defects are found.

As a contract condition: You can make your offer subject to a satisfactory building and pest inspection. If the inspection reveals significant defects, you can renegotiate or withdraw without penalty. This is a standard condition in private treaty sales and worth requesting wherever your state allows it.

Before auction: Auction sales are unconditional the moment the hammer falls. You must complete your building and pest inspection before auction day — most inspectors deliver reports within 24 to 48 hours, so aim to book at least 4 to 5 days before the auction to allow time to absorb the findings. For the full state-by-state contract timeline, see our pre-purchase inspection guide. If you're buying off the plan, the inspection timing is completely different — our buying off the plan guide explains the defects liability and practical completion inspection process.

What to Do If the Inspection Report Finds Problems

Most inspection reports find something — that's normal. 70% of Australian homes have at least one defect. The question isn't whether there are issues, it's whether they're minor cosmetic flags or major structural problems that change the value of the property. You have three realistic options.

1. Negotiate the price down. This is the most common outcome. If the report identifies significant defects — a leaking roof, active termites, electrical non-compliance, rising damp — use the specific repair cost estimates from the report to negotiate a price reduction. Quotes from licensed tradespeople carry more weight than ballpark figures. A $10,000 to $20,000 reduction after a defects-heavy report is a standard outcome in Australian private treaty sales.

2. Request repairs before settlement. For specific fixable issues (e.g. a broken hot water system, faulty smoke alarms, non-compliant handrails), you can request that the seller repair the items before settlement as a contract condition. Your conveyancer drafts the amendment and the seller's solicitor responds. This is cleaner than a price reduction when the defects are easy to fix and you want the home in move-in condition.

3. Walk away. If the report finds major structural issues — foundation problems, extensive termite damage, severe subsidence, or heritage/compliance issues that change the property's usability — and the seller won't meaningfully reduce the price, walking away is the right call. You'll lose the inspection fee but avoid a far larger financial mistake. In cooling-off or contract-condition scenarios you can withdraw with minimal penalty.

Whichever option you take, your conveyancer handles the contract-side paperwork. If you don't have one lined up yet, find a conveyancer first — they'll often review the inspection report alongside the contract of sale. If the price reduction is substantial enough to change your loan amount, revisit our borrowing power calculator to confirm your financing still stacks up before going back to the seller.