Quick answer: A pre-purchase building inspection is a visual check of a property’s condition by a qualified inspector, done to the Australian Standard AS 4349.1 before you commit to buy. It finds visible defects like cracking, roof leaks, rising damp, drainage and waterproofing problems, and safety hazards. It does not check hidden wiring, plumbing or appliances, and it is not a warranty. Book it before you exchange contracts, or make your contract conditional on a satisfactory report. If you’re buying a house and land package, the home doesn’t exist yet, so the protection comes from stage inspections and a practical completion inspection instead.
Last updated 3 October 2026. Written by the REIN Editorial Team. Researched with the help of AI tools, then fact-checked against the sources below.
Reviewed by Scott Fraser, founder of REIN, licensed real estate agent (NSW) with 10 years on the developer side of house and land.
What Is a Pre-Purchase Building Inspection?
A pre-purchase building inspection is a report on the condition of a home you are thinking of buying. The inspector walks through the accessible parts of the property and records significant defects, safety hazards and items that need repair.
Reports are prepared to AS 4349.1-2007 Inspection of buildings – Pre-purchase inspections – Residential buildings. In Queensland, the QBCC licence for this work is defined as inspecting a completed building and preparing a report in accordance with that standard. NSW Fair Trading notes the standard sets what a report must cover, but not its style or layout, so reports from different inspectors can look quite different.
What Does a Building Inspection Cover?
According to NSW and Queensland government guidance, a standard pre-purchase inspection looks for things like:
- Cracking or movement in walls
- Rising damp and mould
- A faulty or leaking roof, and leaking ceilings
- Damaged foundations (where visible)
- Missing or failed waterproofing
- Drainage problems
- Safety hazards
- Possible asbestos, particularly in homes built before 1990
The inspector checks the accessible interior and exterior, the roof space, the under-floor area and site features such as garages and driveways.
What a building inspection usually doesn’t cover
NSW Fair Trading lists items a standard report typically does not assess: footings, concealed damp-proofing, electrical wiring, plumbing, air conditioning, swimming pools, fireplaces and appliances. If any of these matter to you, ask for a specialist report, such as an electrical inspection, as an add-on.
Termites are also separate. A building report is not a pest report. In Queensland, a termite inspection must be done by a licensed pest controller.
When Should You Book a Pre-Purchase Inspection?
- Before you exchange contracts. NSW Fair Trading suggests getting reports early in negotiations, before you spend money on conveyancing.
- During the cooling-off period. In NSW you have 5 business days after exchange. If you pull out in that time, you forfeit 0.25% of the purchase price.
- Before auction day. There is no cooling-off period when you buy at auction in NSW, so any inspection has to happen beforehand.
- As a contract condition. The QBCC recommends making it a condition of your contract that you must be satisfied with the inspection results before the sale is finalised.
Inspectors usually need at least 2 to 3 days’ notice, so book as soon as you are serious about a property.
Who Can Do a Pre-Purchase Building Inspection?
The rules differ by state:
- Queensland: only a QBCC-licensed residential building inspector can complete a pre-purchase building inspection. The licence requires 5 years of relevant experience and professional indemnity insurance.
- New South Wales: use a suitably qualified person, such as a licensed builder, surveyor or architect, who holds professional indemnity insurance.
- Victoria: use a qualified building inspector, surveyor or architect, and check their registration with the Building and Plumbing Commission. Consumer Affairs Victoria warns against relying on a report supplied by the agent or seller. Getting your own is the only way to make sure it is independent.
Whatever the state, ask to see the inspector’s licence or registration and their professional indemnity insurance before you book.
Do New Builds and House and Land Packages Need an Inspection?
Yes, but not the same kind. When you sign a house and land package, the home hasn’t been built, so there is nothing to inspect yet. The risk sits in how it gets built.
For a new build, the inspections that protect you are:
- Stage inspections during construction, such as slab, frame, lock-up and fixing, by an inspector you engage, not the builder’s own supervisor.
- The practical completion inspection. In Queensland, the QBCC says builders must give at least 5 days’ written notice of this walk-through, which usually happens 2 to 3 weeks before practical completion. You and the builder record a defects list, and you can bring your own licensed inspector. Once the list is signed, the builder is responsible for fixing the items within a reasonable time.
- The defects period after handover. The QBCC says builders must fix defects you notify within 12 months of the work being finished.
Our practical completion and handover inspection checklist walks through what to check on the day, and our guide to common building defects covers the problems inspectors find most often in new homes.
One more reason not to skip inspections: the QBCC notes that if you knowingly buy a home with existing defects, you can’t later claim for them under the Queensland Home Warranty Scheme. Home warranty cover for new homes can extend to 6 years and 6 months, but only for defects that weren’t known at purchase. See what happens if your builder goes bust for how warranty insurance works.
What to Do if the Inspection Finds Problems
A report with findings isn’t automatically a reason to walk away. Most homes have something. Your practical options are:
- Ask the seller or builder to fix it before settlement or handover, and get the agreement in writing.
- Negotiate the price to reflect the cost of repairs. Consumer Affairs Victoria notes a report can tell you whether repairs are feasible and give cost estimates.
- Walk away, if your contract allows it and the problems are serious, such as structural movement or widespread water damage.
The goal isn’t to find a perfect property. It’s to know exactly what you’re paying for.
How REIN Fits In
A building inspector tells you about the condition of the building. They don’t tell you whether the price of a house and land package is fair, or how much of that price is a builder commission paid to whoever sold it to you.
That is the part REIN checks. We’re a buyer-only house and land advocate: we review the package before you sign, show you the builder commission inside the price, and rebate 100% (excluding GST) of it to you. A REIN service fee applies, and the rebate typically covers the fee and more. We don’t replace a licensed building inspector, and you should use one at every stage of your build.
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Common Questions About Building Inspections
How much does a building inspection cost?
It depends on the size, age and type of property and whether you add a pest or specialist report. NSW Fair Trading says the cost depends on the type of property and the process used. Get at least two written quotes, and check what each report includes before comparing prices.
How long does a building and pest inspection take?
It varies with the size of the home and its access to the roof space and sub-floor. Ask the inspector how long they need on site and when you’ll receive the written report, and book with at least 2 to 3 days’ notice so the report arrives before your deadline.
What does a building inspection cover?
Visible defects in the accessible parts of the home, including walls, roof, roof space, sub-floor, drainage, waterproofing and safety hazards. It usually excludes wiring, plumbing, appliances, pools and footings.
Can you get a building and pest inspection after auction?
Not in a way that protects you. In NSW there is no cooling-off period at auction, so once the hammer falls you’re committed. Arrange inspections before auction day.
Is a pre-purchase inspection a guarantee there are no defects?
No. The QBCC states a pre-purchase inspection is not a warranty against future defects. It reports what the inspector could see on the day.
Do I need a building inspection for a house and land package?
You can’t inspect a home that hasn’t been built, so a pre-purchase report doesn’t apply when you sign. Use stage inspections during construction and your own inspector at the practical completion inspection.
Sources
- NSW Government – Pre-purchase inspection reports when buying a home (accessed 3 October 2026)
- QBCC – Before you buy and sell (accessed 3 October 2026)
- QBCC – Completed residential building inspection licence (accessed 3 October 2026)
- QBCC – Practical completion inspection (accessed 3 October 2026)
- Consumer Affairs Victoria – Inspect properties before you buy (accessed 3 October 2026)
Disclaimer: This material is general information only and does not take your personal circumstances into account. It is not financial, legal, or tax advice. While we try to keep content accurate and current, we make no warranties as to accuracy or completeness and accept no liability for any loss arising from reliance, to the fullest extent permitted by law. You should seek your own independent professional advice.