Building and Pest Inspections: What They Actually Check (and What They Don't)

A pre-purchase building and pest inspection is a non-invasive visual check of a property's physical condition, run against two Australian Standards: AS 4349.1 for the building, and AS 4349.3 for timber pests. The single most important thing to understand is what "non-invasive" means — the inspector cannot drill, cut, or move furniture and stored items to gain access, so a clean report tells you there are no visible major defects, not that the property is free of hidden ones. Book it, and read the report, before you make an unconditional offer or raise your hand at auction.

Most buyers order the two inspections together as a single "building and pest" report. That's sensible and cost-effective, but it's worth knowing they are two distinct assessments with different scopes, different standards, and — crucially — different things they are not required to look for.

A note on jurisdiction: the physical inspection standards below (AS 4349.1 and AS 4349.3) are national. But the legal-side references in this guide — the Section 32 vendor statement, the absence of a cooling-off period at auction, and registered Building Orders — are specific to Victoria. If you're buying elsewhere, the physical inspection works the same way, but check the conveyancing and disclosure rules that apply in your state.

The building inspection: AS 4349.1

The building inspection is governed by AS 4349.1 and covers pre-purchase building inspections as a non-invasive visual inspection. Its job is to identify significant, visible defects in the parts of the building an inspector can safely reach and see.

A building inspection under this standard is focused on:

• Structural elements — walls, roof frame, and subfloor
• Roof spaces and the roof exterior
• Evidence of structural cracking or structural damage
• Moisture-prone areas and evidence of water damage
• Safety-related issues — handrails, steps, and other safety hazards

Beyond that core structural and safety focus, an inspector may also note other visible conditions where they're accessible on the day — for example, gaps in insulation observed in the roof space. Treat that kind of observation as a bonus flag rather than a guaranteed part of the scope: whether it appears in your report depends on access and the individual inspector's terms of engagement, so if insulation coverage genuinely matters to you, raise it before the inspection and confirm it's included.

The defining limitation follows directly from "non-invasive": the inspector cannot see inside wall cavities, under concrete slabs, or anywhere access is blocked. That's not a shortcut or a lazy inspector — it's the scope of the standard. A clean report means no visible major defects were found, not a guarantee against defects that are hidden behind finishes or beneath the floor.

The timber pest inspection: AS 4349.3

The timber pest inspection is a separate, specific assessment run against AS 4349.3. It's commonly bundled with the building inspection into a single report, but it is its own inspection with its own scope.

It looks for timber pest activity and damage, specifically:

• Subterranean termites
• Dampwood termites
• Borers of seasoned timber
• Wood decay fungi (rot)
• Conditions conducive to pest attack — such as poor drainage or excessive ground contact

Here is the part buyers most often miss: drywood termites and mould are NOT required to be reported on under this standard. A clean timber pest report does not mean the property is free of either. If mould or drywood termites are a specific worry for you — because of the property's age, location, or something you've seen on the inspection walk-through — you need to raise it directly and, if necessary, arrange a separate specialist assessment.

What each inspection covers — and what it doesn't

A physical check is not a legal check

This is the distinction that trips up even experienced buyers. A building and pest inspection is a physical condition check. It is entirely separate from the legal disclosures in a Section 32 vendor statement — a Victorian requirement — which cover matters like registered Building Notices and Orders. If you want to understand how the vendor statement itself is structured and what it's obliged to disclose, start with Delora's Section 32 vendor statement guide, then read the building notices and orders guide for how those specific legal instruments show up inside it.

The two answer completely different questions, and neither substitutes for the other:

• A property can pass a building inspection with no visible defects and still be subject to an unresolved legal Building Order.
• The reverse is also true — a property can have a physical defect that never appears in any legal document.

So you need both: a physical inspection to understand the building's condition, and — in Victoria — a careful read of the Section 32 vendor statement to understand the legal position. Treating one as covering the other is a common and expensive mistake.

How to read a building and pest report

A few practical notes to get real value out of the report rather than a false sense of security:

• Timing is everything. Get the inspection done, and the report read, before making an unconditional offer or bidding at auction. In Victoria there is no cooling-off period at auction to fall back on, so a report that arrives after the hammer falls protects nobody.
• "Combined" doesn't mean "more thorough." A combined building and pest report usually just means both AS 4349.1 and AS 4349.3 were performed together by the same inspector on the same visit — not that the pest coverage is any deeper than a standalone timber pest inspection.
• Ask about your specific concerns directly. Because the inspection is non-invasive, don't rely on the written report alone to have flagged everything visible. If you noticed a stain on a ceiling, a soft spot in the floor, or a crack in a wall, ask the inspector about that specific area rather than assuming a clean report ruled it out.

Read a clean report as "the inspector found no visible major defects within the accessible scope of the standard on the day of inspection" — an accurate, useful statement, but a narrower one than "this property is fine."

FAQ

Does a building inspection cover pests?

No. The building inspection (AS 4349.1) and the timber pest inspection (AS 4349.3) are two separate assessments. They're often bundled into one "building and pest" report, but the pest coverage comes specifically from the timber pest standard, not the building standard.

If the pest report is clean, is the property definitely free of termites?

Not necessarily. AS 4349.3 covers subterranean and dampwood termites, borers, wood decay fungi, and conditions conducive to pest attack — but it does not require reporting on drywood termites or mould. A clean report also reflects only what was visible during a non-invasive inspection; it can't see inside wall cavities or blocked areas.

Can the inspector look inside walls or under the slab?

No. Both inspections are non-invasive and visual. The inspector cannot drill, cut, or move furniture and stored items, and cannot see inside wall cavities, under concrete slabs, or anywhere access is blocked. A clean report means no visible major defects, not a guarantee against hidden ones.

Do I still need to read the Section 32 if the inspection is clean?

Yes. In Victoria, a building and pest inspection is a physical condition check and is entirely separate from the legal disclosures in a Section 32 vendor statement. A property can pass inspection with no visible defects and still be subject to an unresolved legal Building Order. The two documents answer different questions and neither replaces the other.

When should I get the inspection done?

Before making an unconditional offer or bidding at auction. In Victoria there is no cooling-off period at auction, so the report needs to be completed and read before you commit — not after.

What if I'm worried about a specific issue the report didn't mention?

Ask the inspector directly. Because the inspection is non-invasive, the report may not capture every visible concern in detail. If something worried you — a ceiling stain, a crack, a musty smell — raise that specific area with the inspector rather than relying on the report alone.

Scope, standards and currency

The coverage described here reflects Australian Standards AS 4349.1 (building inspections) and AS 4349.3-2010 (timber pest inspections). Standards are periodically revised, so confirm the current edition of each standard with your inspector before relying on the exact scope above. Nothing here describes an individual inspector's terms of engagement, which can vary — always read the inspection agreement so you know precisely what is and isn't included on the day.

This is general information, not legal or professional advice — confirm the specifics with your inspector and conveyancer before you rely on them.

Next step

A physical inspection answers only the "what condition is it in?" question — it's one part of pre-purchase due diligence, not the whole of it. For the legal side in Victoria, read the Section 32 vendor statement carefully and check for any registered building notices and orders that the physical inspection would never surface. Line up both the physical inspection and the legal read before you commit to an unconditional offer or an auction bid.

Before you get that far, know the ground you're buying on. Look up the property's suburb on Delora to see the local market data, price trends and due-diligence context alongside your inspection — so the report isn't the only thing telling you whether this is the right buy.