Pre-Purchase Building Inspections in Australia: AS 4349.1

What it is

A pre-purchase building inspection is a visual assessment of a residential property carried out before a buyer signs an unconditional contract. The recognised technical benchmark is AS 4349.1-2007 Inspection of buildings, Part 1: Pre-purchase inspections, Residential buildings, published by Standards Australia. The standard sets out what the inspector should look at, how to report findings, and what falls outside the scope of a routine inspection.

The inspector produces a written report listing significant items observed at the time of inspection. The report is not an assurance the property is free of defects, and it is not a guarantee of future performance. It is a snapshot of the visible condition of accessible areas on the day, against the reasonable expectations for a building of that age and type.

What an AS 4349.1 inspection covers

The standard inspection looks at the readily accessible parts of the main building, plus the site. That generally covers:

• The interior of the building, including ceilings, walls, floors, doors and windows
• The exterior, including cladding, roof from accessible vantage points, gutters, downpipes, eaves and fascias
• The roof space where there is safe access through a manhole
• The subfloor space where there is safe access through an access hatch
• The roof exterior where it can be safely viewed
• Outbuildings such as detached garages and sheds within 30 metres of the main building
• Site drainage, paths, driveways, retaining walls, fences and surface water management within 30 metres of the main building

The inspector reports significant items, which the standard defines as major defects, minor defects of a serious nature, items affecting health and safety, and items that require urgent attention or further investigation. The report should call out the cause and the recommended action for each item, not just the symptom.

What the standard excludes

The exclusions list under AS 4349.1 is long and surprises many buyers. The inspector is not required to inspect or report on:

• Footings below ground level
• Concealed damp-proof courses
• Electrical installations, smoke detectors, light switches, fittings and security systems
• Operation of mechanical equipment, including air-conditioning, hot water systems and pumps
• Gas fittings and gas appliances
• Plumbing systems beyond visible fittings and signs of leakage
• Swimming pools, spas and their associated plant
• Solar systems
• Asbestos, lead paint, hazardous materials or mould testing
• Pest activity, which sits under the separate AS 4349.3 timber pest inspection standard

A general inspection is also not a code compliance audit. It does not tell the buyer whether the building meets the current National Construction Code, only whether the inspector observed significant items against the reasonable expectations for the building's age and type. The inspector does not move furniture, lift carpets or cut into linings, and reports only on what can be safely seen and accessed on the day.

Specialist inspections to consider alongside

Most buyers should pair the standard inspection with:

• A timber pest inspection under AS 4349.3, which is the matching standard for termites, borers and timber decay
• A pool safety inspection where the property has a pool, especially in QLD where the pool safety register applies under the Building Act 1975 (QLD)
• A swimming pool barrier compliance check against the relevant state regulation
• An asbestos survey on properties built or renovated before 1990
• An electrical safety inspection by a licensed electrician for older properties

How builders use pre-purchase reports

Builders read pre-purchase reports for two reasons. The first is when a client asks for a scope of work to fix the items flagged in a report they have received. The second is when the builder is the buyer, looking at the property as a renovation candidate. In both cases, the report's value sits in what it does not say.

A report that lists "no significant items" in the subfloor only means the inspector accessed the subfloor and saw nothing concerning. It does not mean the floor framing is sound. A clean roof exterior section means the visible parts of the roof looked acceptable from a safe vantage point. It does not mean every fixing is in working order.

Builders quoting from a pre-purchase report should always carry out their own site walk. Add a contingency for items the report could not see, especially around wet areas, concealed framing, services and roofing. The report is a screening tool, not a structural assessment.

Buyers acting on a report

A buyer with a pre-purchase report has a few practical options before unconditional exchange. The first is to negotiate the price down by the cost of the major items. The second is to ask the vendor to fix items before settlement and provide receipts. The third is to walk away, which the building inspection clause in a standard contract usually allows during the cooling-off or due diligence period.

Buyers should read the report cover to cover, including the limitations and disclaimers. Where the report flags items as needing further investigation, treat that as a hard stop. A specialist inspection costs less than a structural problem discovered after settlement.