A pre-purchase building inspection is the single most important step between finding a property you love and committing to buy it. In Perth's current market — where prices have risen significantly and competition for properties is fierce — it can be tempting to skip the inspection to speed up the process. That's exactly when you need one most.
Here's everything you need to know about getting a pre-purchase building inspection in Perth.
When to Book Your Inspection
The right time depends on your contract type:
- Offer and Acceptance with building inspection clause: Book as soon as your offer is accepted. You'll typically have 7–14 days to complete the inspection before the clause expires. Don't wait until the last few days — inspectors get booked out, especially during high-volume periods.
- Before making an offer: Some buyers prefer to inspect before committing. This is common in competitive markets where sellers may not accept conditional offers. You risk paying for an inspection on a property you don't end up buying, but you also avoid the time pressure of a clause deadline.
- Auctions: Inspect before auction day. Once the hammer falls, you own it — there's no cooling-off period and no inspection clause.
Building Inspection vs Building & Pest — Which Do You Need?
A building inspection (AS 4349.1) covers the structural and non-structural elements of the property. A timber pest inspection (AS 4349.3) is a separate assessment that specifically checks for termites, borers, and wood decay fungi.
In Perth, the strong recommendation is to book a combined building and pest inspection. Perth sits on the Swan Coastal Plain, and almost the entire metro area carries some level of termite risk. Booking combined saves time (one visit, one report) and ensures nothing falls between the gaps.
The timber pest inspection is not just about finding termites. It also identifies conditions conducive to termite attack — moisture sources, soil-to-timber contact, poor drainage, and inadequate ventilation — that could lead to future infestation even if no active termites are present today.
What Happens on Inspection Day
Before the Inspection
The inspector will need access to the property — this is arranged through the selling agent. Make sure access is confirmed for the roof space (manhole), sub-floor (if applicable), garage, sheds, and all rooms. Locked rooms or inaccessible areas will be noted as limitations in the report.
During the Inspection
A thorough inspection takes 1–2 hours on-site depending on the property's size and complexity. The inspector works systematically through the exterior, interior, roof space, and sub-floor (where accessible), documenting findings with photos and measurements.
You're welcome to attend the inspection. Being on-site lets you see issues firsthand and ask questions in real time. However, the inspector needs space to work — following along at a distance is better than looking over their shoulder.
After the Inspection
You'll receive a detailed report — typically within 24 hours — as a digital PDF. The report includes photos, thermal images where applicable, and defect grading that helps you quickly identify what's serious, what needs monitoring, and what's cosmetic.
A post-inspection debrief call is invaluable. A good inspector will walk you through the report, explain the context of each finding, and help you understand which issues are deal-breakers, which are negotiation points, and which are normal wear and tear.
How to Read Your Inspection Report
Inspection reports can be detailed documents. Here's how to approach them:
- Summary section first: Most reports have a summary at the front. Start here for the big-picture view — major defects, safety hazards, and items requiring immediate attention.
- Defect grading: Findings are typically graded by severity — major structural defects, minor defects, and maintenance items. Focus on the major and safety-related findings first.
- Photos and evidence: Every significant finding should be supported by photos. If something is described but not photographed, ask your inspector to clarify.
- Limitations: The report will list areas that couldn't be accessed or fully inspected. Pay attention to these — they represent unknown risk.
- Don't panic about minor items: Every home has minor defects. Small cracks, minor wear, and cosmetic issues are expected. Focus on structural and safety findings.
Perth-Specific Risks Your Inspector Should Check
Perth's construction environment is different from the east coast. A good Perth inspector will specifically assess for:
Soil-Related Structural Movement
Perth's south-east suburbs (Canning Vale, Southern River, Thornlie) sit on the Guildford Formation — a highly reactive clay that swells in winter and shrinks in summer, creating cyclical stress on foundations. Diagonal step-cracking in brickwork is the primary indicator. Even relatively new homes in these areas can show signs of soil movement.
Concrete Roof Tile Failure
Homes built in the 1980s–1990s across Perth's northern and south-eastern suburbs used concrete roof tiles that are now 25–35 years old. When the factory glaze wears off, tiles absorb moisture, become heavy, and cause roof structures to sag. Failed ridge capping is the most visible sign. This is currently the most widespread maintenance issue across Perth's established suburbs.
Coastal Corrosion
Properties within a few kilometres of the coast — Burns Beach, Scarborough, Cottesloe, Rockingham — suffer accelerated corrosion from salt spray. Steel lintels above windows, roof tie-down brackets, and structural fixings corrode faster than builders typically account for. Homes built without marine-grade stainless steel hardware in these areas may need premature replacement of structural fixings.
Asbestos Materials
WA had a significant reliance on asbestos building products. Homes built before 1985 have a high likelihood of containing asbestos — Super Six fencing, Hardiflex eaves, fibro sheeting, Tilux bathroom panels, and vinyl floor tiles with asbestos-containing adhesive. An inspector can identify materials likely to contain asbestos based on era and appearance, though laboratory testing is required for confirmation.
COVID-Era Build Defects (2020–2023)
Government HomeBuilder grants created a critical trade shortage across Perth. Homes built during this period — particularly in new estates like Alkimos, Baldivis, Brabham, and Harrisdale — have elevated defect rates. Missing brick wall ties, inadequate DPC installation, and poor site drainage are common findings. Even near-new homes from this period warrant a thorough inspection.
How Much Does a Building Inspection Cost in Perth?
Pre-purchase building inspection costs in Perth vary based on property type, size, and the inspection tier you choose. As a guide, expect to pay between $350 and $840+ for a building inspection, or from around $422 for a combined building and pest inspection. Additional costs may apply for properties with additional storeys, granny flats, rural yards, or sub-floor access requirements.
Relative to the purchase price of a Perth property, an inspection is a small investment that can save you thousands — or help you negotiate a better price based on identified defects.
What If the Inspection Finds Problems?
Finding defects doesn't mean you shouldn't buy the property. It means you can make an informed decision:
- Negotiate on price: Use the report to request a reduction reflecting repair costs
- Request repairs before settlement: Ask the seller to fix identified issues as a condition of the sale
- Walk away: If major structural defects make the property unviable, you can exercise your building inspection clause to withdraw from the contract
- Proceed with full knowledge: Some buyers accept known issues if the price already reflects the condition. At least you know what you're getting into.
The worst outcome is finding out about problems after settlement — when the cost and stress fall entirely on you.
Book Your Pre-Purchase Inspection
A pre-purchase building and pest inspection gives you the information you need to make a confident decision. Combined inspections start from $422, and your report is delivered within 24 hours — well within most REIWA contract timelines.
- Book online: View Pricing & Book
- Call us: 0481 575 747 (Mon–Fri 7:30am–5:30pm)
We cover the full Perth metro from Two Rocks to Mandurah. As a 5-star rated building and pest inspection team across Perth, we're ready to help you buy with confidence.
PinPoint Building & Pest Inspections — Licensed and insured, AS 4349.1 & AS 4349.3 compliant. Over 10,000 inspections completed across our expert team.
