The best way to choose a building inspector in Perth is to check eight things before you book: builder registration, the standard they inspect to, insurance, a sample report, the equipment they use, their independence, their track record, and what happens after the report. Price comes last, because the cheapest inspection is rarely the one that saves you money.
WA has no licence specifically for building inspectors, which means anyone can print the words on a business card. This guide gives you the checks a registered builder would use to vet a competitor, and it pairs with our ranked comparison of the best building inspectors in Perth for 2026.
In this article:
- Check 1: are they a registered builder?
- Check 2: what standard do they inspect to?
- Check 3: are they insured?
- Check 4: ask for a sample report
- Check 5: what equipment do they bring?
- Check 6: are they independent?
- Check 7: read the reviews properly
- Check 8: what happens after the report?
- The red flags
- When to book
- Frequently Asked Questions About Choosing a Building Inspector in Perth
| Choosing a building inspector at a glance |
|---|
| Check 1: registration as a builder with Building and Energy WA |
| Check 2: inspections carried out to AS 4349.1 (building) and AS 4349.3 (timber pest) |
| Check 3: current professional indemnity and public liability insurance |
| Check 4: a sample report with full-resolution photographs and plain-English findings |
| Check 5: moisture meter and thermal imaging equipment on every relevant inspection |
| Check 6: independence from agents, builders and vendors |
| Check 7: review volume and consistency, not just a star rating |
| Check 8: a phone consultation with the inspector after the report |
| Get a free instant quote online, 24/7 at bestwestbuilding.com.au |
Check 1: are they a registered builder?
Building inspectors in WA are not licensed as inspectors. Registered builders are licensed, and their registration with Building and Energy WA is public and searchable. If your inspector is a registered builder, they have the qualifications, experience and accountability that come with holding a building licence in this state.
Ask the question directly and check the register yourself. We wrote about this in Are Building Inspectors Licensed in WA? and the short version is that “qualified inspector” and “registered builder” are not the same thing.
| KEY TAKEAWAY A registered builder has built the type of home they are inspecting. That experience is what separates a defect being noted from a defect being understood. |
Check 2: what standard do they inspect to?
A residential pre-purchase building inspection in Australia is carried out under AS 4349.1, and a timber pest inspection under AS 4349.3. Those standards set what must be inspected, how access is defined and what the report must contain. An inspector who cannot tell you which standard they work to is a red flag on its own.
The standard also sets the limitations. AS 4349.1 is a visual inspection of accessible areas. It does not involve testing services, moving furniture or opening walls, and any inspector promising more than that in a standard inspection is overselling.
Check 3: are they insured?
Ask for confirmation of current professional indemnity and public liability insurance. If the inspector is not a registered builder, they most likely do not carry insurance. Professional indemnity covers you if the inspector misses something they should reasonably have found. Public liability covers damage to the property during the inspection. A sole operator without both is carrying risk you do not want to inherit.
Check 4: ask for a sample report
The report is the product. Before you book, ask to see a sample and look for:
- Full-resolution photographs of every defect, not thumbnails
- Plain-English findings that explain what the defect is, why it matters and what to do next
- A clear distinction between major defects, minor defects and maintenance items
- Same-day delivery, so you are not waiting a week while your finance clock runs down
- A summary you can read on your phone in five minutes
If the sample is a tick-box template with three photos, that is what you will receive. Our guide to reading your building inspection report shows what a useful report looks like page by page.
Check 5: what equipment do they bring?
Equipment does not replace experience, but the right tools extend what a visual inspection can find.
| Tool | What it does |
|---|---|
| Moisture meter | Reads moisture behind shower walls and around wet area junctions, standard on Bestwest structural and premium inspections |
| Thermal imaging camera | Detects heat loss from missing ceiling insulation and concealed defects such as leaking pipes or pooling water behind plasterboard |
| Drone | Captures roof cover on two-storey or steep roofs that cannot be safely accessed on foot |
| Ladder and torch | Roof space, roof exterior where safely accessible, and subfloor and crawl space areas where accessible |
| WHY IT MATTERS Any inspector who claims their thermal camera finds termites is telling you something about how they read their own equipment. Thermal imaging shows temperature differences, not insects. |
Check 6: are they independent?
Independence is the whole point of a building inspection. Be careful when the recommendation comes from someone with an interest in the sale going through. An inspector who relies on referrals from one agency or one builder has a commercial reason to keep reports soft.
Think of it like an umpire. You want someone who calls what they see, not someone who gets paid by one of the teams. Bestwest takes bookings directly from buyers and homeowners and does not pay for agent referrals.
Check 7: read the reviews properly
A star rating tells you very little on its own. Look at three things instead: the volume of reviews, how recent they are, and whether the wording describes specific findings or reads like a template. Bestwest Building has over 1,200 Google reviews built up across more than 50,000 inspections, and the pattern you will notice in them is inspectors being named for specific things they found.
Check 8: what happens after the report?
A good inspector picks up the phone. Findings in a report are only useful if you understand them well enough to act, whether that means negotiating, budgeting for a repair or walking away. Bestwest has always included a phone consultation with the inspector who carried out your inspection, so you can ask what a finding actually means for your purchase.
The red flags
If you see any of these, keep looking:
- No builder registration and no clear explanation of the inspector’s qualifications
- A price well below the market range with no explanation of what has been cut out (we covered this in Is the Cheapest Building Inspection in Perth Worth It?)
- A sample report with few photographs or no severity ratings
- Claims that thermal cameras detect termites or moisture inside brick walls
- A report that arrives days after the inspection
- Reluctance to talk to you after the report is sent
When to book
In WA, a pre-purchase building inspection is usually carried out after you sign the contract, but before settlement. Your offer will normally include a condition that gives you a deadline for when the inspection needs to be completed, so line up your inspector as soon as the offer is accepted rather than waiting for the contract to go unconditional.
Bestwest Building’s extensive team of highly experienced registered builders regularly inspects homes from Two Rocks to Falcon and throughout the South West, with same-day digital reports on every job.
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Frequently Asked Questions About Choosing a Building Inspector in Perth
Do building inspectors need a licence in WA?
No. There is no specific licence for building inspectors in WA. Registered builders are licensed through Building and Energy WA, which is why builder registration is the most reliable qualification to look for.
Should I use the inspector my real estate agent recommends?
Be cautious. An agent’s job is to sell the property, and an inspector who depends on agent referrals has a reason to keep findings soft. They may recommend a truly professional and independent inspector, but always do your own research and book directly.
How much should a building inspection cost in Perth?
A pre-purchase building inspection in Perth typically costs between $595 and $895, and a combined building and pest inspection between $790 and $1,090. Get an instant personalised quote at bestwestbuilding.com.au.
What is the difference between a building inspector and a registered builder?
A building inspector is a job title anyone can use. A registered builder holds a licence with Building and Energy WA, has demonstrated experience in construction and is accountable to the regulator. Bestwest inspections are carried out by registered builders.
