Is a Building and Pest Inspection Compulsory in NSW?

No. A building and pest inspection is not compulsory in New South Wales. No law requires a buyer to commission one before exchange or before settlement. You can buy a house in NSW without anyone ever looking in the roof cavity.

The question usually arrives with a follow-up: if it isn’t required, is it worth doing anyway? This guide covers what NSW law does require of a residential sale, who asks for an inspection even though the law doesn’t, and what our inspectors record when they attend a property that is on the market.

What NSW Law Requires of a Residential Sale

The obligations in a NSW residential sale sit mostly with the vendor, and they are about paperwork rather than building condition.

A contract for the sale of land in NSW must have prescribed documents attached before the property is offered for sale. These include the title particulars, a planning certificate from the local council, and a sewerage service diagram. The purpose is disclosure of planning and title matters, not disclosure of building condition. A vendor who attaches every prescribed document has met the requirement even if the roof leaks.

There is no equivalent obligation on the buyer. Building and pest inspections sit entirely in the category of voluntary due diligence, alongside a solicitor’s contract review and a strata records search. Nobody signs off on whether you did them.

What fills that gap is a common law principle rather than a statute. In residential property the buyer carries the risk of defects they could have found through reasonable inquiry. A vendor is not obliged to volunteer that the subfloor has decayed bearers. If you buy the property and discover it afterwards, the cost sits with you unless you can establish fraud, misrepresentation, or a breach of a specific contract warranty. Those claims are possible but slow and expensive, which is why the practical protection in NSW is the inspection before exchange rather than the argument afterwards.

Who Asks for One Even Though the Law Doesn’t

Several parties treat an inspection as expected practice, and any one of them can make it feel compulsory when it isn’t.

Solicitors and conveyancers. Many will advise a client not to exchange on an established dwelling without a building and pest report, and some will put that advice in writing. It is advice, not a legal requirement, but it is common advice.

Lenders. A bank orders a valuation to confirm the property supports the loan amount. A valuation is not a building inspection and does not include a roof cavity, a subfloor, or a moisture survey. Some lenders will add a condition requiring a report if the valuer flags structural concerns. Absent that, your lender will usually settle a loan on a house nobody has inspected.

Contract conditions. In a private treaty sale, the parties can agree to make the contract conditional on a satisfactory building and pest report. Once that clause is in a signed contract, the inspection becomes contractually required for that transaction, with the timing and the exit mechanism set by the wording. Vendors in a competitive market often decline the clause, which is a negotiating position rather than a legal one.

Strata schemes. Buying a lot in a strata scheme adds a separate voluntary search of the owners corporation records. A building inspection covers your lot and any accessible common property; it does not cover the scheme’s finances, levies, or maintenance history. Our strata inspection guide covers how the two work together.

Timing Matters More Than the Requirement

Because the inspection is voluntary, nothing in the process schedules it for you. That makes timing the easiest part to get wrong.

At auction, there is no cooling-off period in NSW. When the hammer falls the contract is unconditional, so an inspection has to happen during the campaign or not at all. In a private treaty sale, the statutory cooling-off period gives you five business days from exchange, and a Section 66W certificate signs that right away. Our guide to cooling-off periods in NSW and WA sets out how each of those paths works and what the deposit consequences are.

The practical sequence, along with what an inspector examines and what a report costs, is in the Sydney pre-purchase inspection guide.

What We Record When We Do Attend

The law leaves the inspection optional. Our own inspection records show what is actually present in the homes that get inspected.

SURE has recorded 206,458 defect observations across 10,891 distinct defect types. Every observation is a condition an inspector saw and photographed at a property that was, in most cases, on the market at the time.

The single most frequently recorded finding is external wall cracking due to settlement, which appears in 5,426 reports. Other findings we record often:

Finding	Reports
External wall cracking due to settlement	5,426
Trees in close proximity to the dwelling	3,451
Slab edge concealed by soil or paving	3,003
Undrained air-conditioner overflow	2,895
Timber in contact with the ground	2,191

Read that as frequency, not severity. Settlement cracking covers everything from hairline cosmetic movement to a pattern that warrants a structural engineer, and telling those apart is what the report is for. Every finding in a SURE report carries a severity rating and a recommended action, so you can see which items are urgent and which are routine maintenance.

By category, the observations break down like this:

Category	Share of observations
Finishes	35.2%
Termite	13.4%
Structural	12.5%
Drainage	8.8%
Moisture	7.4%
Roofing	6.2%

These figures come from SURE’s own inspection records. They describe the properties our inspectors have attended, not the NSW housing stock as a whole.

Finishes account for the largest share, which fits how a typical report reads: a long list of minor items and a short list of things that actually matter. Termite findings are the next largest category, and they are the class of finding least visible during an open home. Two of the entries in the table above, a concealed slab edge and timber touching the ground, are conditions that let termites reach a building without being seen.

What an Inspection Does Not Do

An inspection is a visual assessment of reasonably accessible areas, carried out under AS 4349.1. It is not a guarantee about the building, and the limits are worth stating plainly.

Inspectors do not lift carpets, move furniture, cut into walls, or dismantle plumbing. Areas without safe or reasonable access, such as a roof cavity with no hatch or a subfloor with too little clearance, are recorded as not inspected rather than reported as sound. A finding records the condition on the day of the inspection. The report is still useful; it just needs to be read for what the inspector saw and where they could not reach.

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Frequently Asked Questions

Is a building and pest inspection required by law in NSW? No. There is no NSW law requiring a buyer to obtain a building or pest inspection before purchasing residential property. It is voluntary due diligence. The only situation in which it becomes required is when a signed contract makes the sale conditional on a satisfactory report.

Does the vendor have to tell me about defects? A vendor must attach the prescribed documents to the contract, covering title and planning matters. There is no general obligation to disclose building defects. In residential sales the buyer carries the risk of defects that reasonable inquiry would have revealed.

Will my bank make me get one? Usually not. A lender orders a valuation, which is a different exercise with a different scope. Some lenders add a condition requiring a report when a valuer notes structural concerns, but most home loans settle without any building inspection.

Is a pest inspection separate from a building inspection? They are separate assessments, usually booked together and delivered as one report. Termite findings make up 13.4% of the observations in our records, and they are the findings least likely to be visible during a walk-through. Our combined building and pest guide explains how the two scopes fit together.

Can I get an inspection after I have exchanged contracts? Yes, and in a private treaty sale with a cooling-off period that is a common sequence. Five business days is a tight window, so book as soon as contracts are exchanged. After an auction, or after a Section 66W certificate is provided, a report still gives you information but no contractual exit.

What if the vendor already has a report? A vendor-supplied report tells you something, but it was commissioned by the seller and may be months old. Findings change, and a report addressed to somebody else generally gives you no recourse against the inspector. Most buyers commission their own.

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Not compulsory. Plenty of NSW buyers still want to know what they are buying before they sign. Book an inspection or see current pricing for your property type.