Building Inspections in Perth: Everything You Need to Know
The Real Story Behind Perth Property Inspections
"We've inspected over 200 properties across Perth last month — and no two were alike. From termite tunnels hidden in Baldivis homes to slab heave cracking foundations in Ellenbrook, what we uncover is always different and often surprising."
I still remember the young couple who almost bought their dream home in Canning Vale last summer. Beautiful property, great location, perfect yard for the kids. But underneath that fresh coat of paint? Extensive termite damage that would have cost them $30,000 to repair. A simple inspection saved them from a financial nightmare.
Hidden Termite Damages
Whether you're stepping onto the property ladder for the first time, preparing to sell your family home, or watching your new build take shape, a professional building inspection isn't just paperwork—it's your insurance against heartbreak and financial strain.
Here in Western Australia, where our reactive clay soils shift with the seasons, bushfire zones demand specific building standards, and termites thrive in our climate, skipping this step is like driving blindfolded.
At Descom Consultant, we don't just know buildings—we know Perth. Our certified inspectors have walked through properties in every suburb, understand local soil conditions, and can spot the difference between normal settling and structural concerns that should keep you up at night.
This guide cuts through the jargon to give you the straight talk on building inspections: what really matters, what to watch for, and how to protect your biggest investment from becoming your biggest regret.
What Is a Building Inspection, Really?
Think of a building inspection as a health check-up for a home. Just like your doctor examines you for hidden problems, our inspectors examine properties for issues that aren't visible to the untrained eye—structural weaknesses, water damage, pest infestations, and safety hazards that could affect your family's wellbeing and your wallet.
The Legal Side in WA
While Western Australia doesn't legally require you to get a building inspection before buying, most savvy buyers wouldn't dream of skipping this step. In fact, many insert a "building condition clause" into their purchase contracts, giving them the right to walk away if serious issues emerge.
I've seen too many people rush through settlements only to call us in tears six months later when ceiling cracks appear or termites make themselves known.
When we inspect a property, we follow strict Australian Standards that ensure our findings stand up to scrutiny:
AS 4349.1-2007 covers pre-purchase building inspections (the structural and safety elements)
AS 4349.3-2010 guides our timber pest inspections (termites, borers, and wood decay)
WA Guide to Standards and Tolerances helps us identify what constitutes unacceptable workmanship
These aren't just guidelines—they're the difference between an inspection that protects you and one that leaves you vulnerable.
Types of Building Inspections You Might Need
Different situations call for different types of inspections. Here's what Perth homeowners typically request:
Pre-Purchase Inspections
For buyers who want peace of mind before committing hundreds of thousands of dollars. These often include pest inspections too—something I always recommend in areas like Roleystone or South Perth where termite activity is higher.
Pre-Sale Inspections
For sellers who want to fix problems before listing or use a clean report as a selling point. One client in Yokine sold her 1970s home for $25,000 above asking price partly because she could show potential buyers a comprehensive inspection report showing the property's solid condition.
New Build/Handover Inspections
For when you're about to receive the keys to your brand-new home. I remember inspecting a just-completed house in Baldivis where we discovered the bathroom waterproofing hadn't been installed correctly—a problem that would have caused thousands in damage within months if not caught.
Structural Inspections
Focused assessments when you notice worrying signs like cracks, doors that won't close properly, or uneven floors. These are particularly important in areas with highly reactive soils like Ellenbrook or Byford.
Special Purpose Reports
Targeted inspections for specific concerns—like that roof leak that only appears during heavy rain or investigating mold problems in older Fremantle homes.
All our inspections come with same-day PDF reports featuring clear photos, straightforward explanations of problems found, and practical recommendations on what to do next.
What We're Actually Looking For During an Inspection
When I walk through a Perth property, I'm not just ticking boxes—I'm hunting for real issues that could impact your safety, your finances, and your quality of life. Here's what we focus on:
Structural Integrity
Signs of movement like stepped cracks in brickwork, sagging ceilings, or uneven floors. In Perth's eastern suburbs where clay soils expand and contract seasonally, these signs can reveal serious foundation issues.
Roof Condition
Rust, leaks, loose tiles, and gutter problems. You'd be amazed how many Perth homeowners never see their own roofs—until water starts coming through the ceiling during winter storms.
Moisture Issues
Using specialized moisture meters, we detect dampness that can't be seen but will eventually lead to mold, rot, and health problems. This is particularly important in older suburbs like Mount Lawley and Victoria Park where rising damp is common in heritage homes.
Timber Pests
Evidence of termites, borers, or fungal decay. If you're buying near natural bushland like in Roleystone or near the Swan River, this check is non-negotiable.
Site Drainage
Poor drainage around a property can cause long-term structural damage. We check for pooling water, negative fall toward the building, and inadequate stormwater management—issues that can turn minor winter rains into major headaches.
Safety Hazards
Missing balustrades, exposed wiring, trip hazards, or dangerous access points. One Scarborough property I inspected had an improperly secured second-floor balcony that could have resulted in serious injury.
Workmanship Issues
In new builds, we spot the corners cut by rushed builders—from uneven cornices to improperly secured roof trusses. These might seem minor at first glance but can lead to significant problems down the track.
Tools That Help Us See What You Can't:
Moisture meters that detect hidden dampness
Thermal imaging cameras that reveal temperature differences, indicating leaks or insulation gaps
Tapping sticks and sounding tools that help identify hollow areas or pest damage
Remember: Our inspections are visual and non-invasive—we don't cut into walls or move heavy furniture. If we spot warning signs, we'll recommend further evaluation by specialists like structural engineers or licensed electricians.
The Real Cost of Building Inspections in Perth
"Isn't it just another expense?" That's what a first-home buyer asked me last month before reluctantly booking an inspection for a character home in Maylands. Two days later, he was thanking me profusely—we'd discovered termite damage that would have cost him $23,000 to rectify.
Building inspections in Perth typically cost between $350 and $750—a small fraction of your property investment that could save you thousands or even tens of thousands in unexpected repairs.
What You'll Typically Pay:
Here’s a breakdown of typical building inspection costs in Perth (pricing may vary based on property size, location, and urgency)
| Inspection Type | Estimated Cost (AUD) |
|---|---|
| Pre-purchase structural inspection | $390 – $495 (standalone) |
| Combined building & pest inspection | $450 – $695 (most popular) |
| New home handover inspection | $495 – $650 |
| Special purpose inspection | $300 – $500+ |
What Affects the Price:
Property size and complexity – Double-storey homes or large properties take more time
Access challenges – Difficult roof spaces or limited subfloor access require special equipment
Location – Properties in outer suburbs or regional WA may include travel costs
Urgency – Need results tomorrow or on a weekend? Expect to pay a premium
The Value Proposition:
Think of it this way: a $495 inspection might reveal $10,000+ in necessary repairs, giving you negotiating power or the wisdom to walk away. I've had clients in Joondalup and Rockingham renegotiate purchase prices by $15,000 or more based on our findings.
One client told me: "That $450 inspection was the best money I've ever spent—it saved me from buying a money pit disguised as my dream home."
Your Free Building Inspection Checklist for WA Properties
Even with professionals handling your inspection, it helps to know what to look for and what questions to ask. That's why we've created a Western Australia-specific checklist to guide you through the process.
Why Our Checklist Makes a Difference:
Ensures you understand what's being assessed
Helps you ask the right questions before, during, and after the inspection
Gives you confidence when reviewing the final report
Makes negotiating repairs or price adjustments more straightforward
What's Included in Your Free Checklist:
Exterior and roof inspection items specific to Perth conditions
Structural warning signs tailored to WA's soil types
Moisture and drainage indicators relevant to our seasonal rainfall
Termite risk factors for Perth's climate and building styles
Site and safety concerns common in local properties
Step-by-step guidance for what happens after you receive your report
👉 [Download Your Free WA Building Inspection Checklist Here]
Why New Homes in Perth Still Need Inspections
"It's brand new—what could possibly be wrong?" I hear this all the time, usually followed weeks later by distressed calls about leaking showers, sticking doors, or cracking slabs.
The reality? New homes in Perth often have defects that aren't immediately obvious but will cause headaches down the track.
Why New Builds Can Be Problematic:
Construction booms mean builders are often stretched thin, leading to supervision gaps
Tight deadlines can result in rushed work, especially in large developments
Some builders rely heavily on inexperienced subcontractors
Certain defects only become apparent months after completion
Common Issues We Find in New Perth Homes:
Cracked or unlevel concrete slabs, especially in areas with reactive clay soils
Incomplete waterproofing in bathrooms and wet areas (a major cause of disputes)
Roof frame defects that compromise structural integrity during storms
Poor drainage around the property that will lead to future problems
Improperly installed doors, windows, and fixtures
I remember inspecting a brand-new home in Hammond Park where the excited owners were ready to move in—until we discovered the slab had cracked in three places and the shower was leaking into the wall cavity. These weren't minor cosmetic issues; they were serious defects that the builder was obligated to fix before handover.
Key Inspection Points During Your Build:
Slab Stage – Conducted after the concrete slab is poured but before brickwork begins. Ensures foundational accuracy and compliance.
Brick Stage – Completed once brickwork is laid but before the roof frame is installed. Checks wall alignment, structural integrity, and workmanship.
Frame Stage – Performed before internal linings (like plasterboard) are added. Focuses on wall frames, roof structures, and service installations.
Practical Completion Inspection (PCI) – The final inspection before handover to ensure the property meets Australian Standards and matches the approved building plans. This is your last chance to identify and rectify defects before accepting the keys.
For most new homes, we recommend at minimum a thorough PCI, though stage inspections throughout the build process catch problems when they're easier and cheaper to fix.
How Long Does a Building Inspection Really Take?
Quality can't be rushed. While most standard building inspections take between 60 and 90 minutes on-site, what matters isn't how fast we work—it's how thoroughly we investigate every accessible area of your property.
I once spent three hours in a seemingly simple Karrinyup home because what started as a routine check revealed concerning movement in the rear extension that needed detailed documentation. That extra time potentially saved the buyer from $45,000 in future repairs.
Typical Timeframes by Inspection Type:
Here’s how long different types of building inspections typically take in Perth.
| Inspection Type | Typical Timeframe |
|---|---|
| Pre-purchase property inspection | 60–90 minutes |
| Combined building & pest inspection | 90–120 minutes |
| PCI / Handover inspection | 90–150 minutes (extra meticulous) |
| Structural inspection | 45–75 minutes |
| Re-inspection for defect verification | 30–60 minutes |
What Might Extend the Inspection Time:
Difficult access to roof spaces or subfloor areas
Large or complex properties with multiple buildings
High number of defects requiring documentation
Special risk factors like proximity to bushland or water bodies
Unusual construction methods or materials
When You'll Get Your Results:
We pride ourselves on same-day reports for standard inspections. More complex assessments may take up to 24 hours, but we always provide preliminary findings before leaving the site so you can make time-sensitive decisions.
All reports include annotated photos, clear explanations in plain English, and practical next steps—because what good is information if you don't know what to do with it?
Termite vs. Building Inspections: What's the Critical Difference?
One of the most common misconceptions I encounter is that a standard building inspection covers termites. It doesn't—and in Perth's termite-prone environment, that's a distinction that could cost you dearly.
Building Inspection (AS 4349.1)
Focuses on structural and condition assessment:
Foundation integrity and structural elements
Roof systems and water management
General defects and maintenance issues
Safety hazards and building code compliance
Timber Pest Inspection (AS 4349.3)
Specifically targets biological threats to timber:
Active termites and evidence of previous infestations
Borers and wood decay fungi
Conditions that might attract pests (poor drainage, wood-to-ground contact)
Effectiveness of existing termite barriers or treatments
Why You Need Both in Perth:
Perth's climate creates ideal conditions for termites, particularly in areas like Thornlie, Gosnells, and parts of the Hills where natural bushland meets residential development. A home can pass a building inspection with flying colors yet harbor a termite colony that's silently causing thousands in damage.
I recall a beautiful Nedlands character home that was structurally sound but had active termites in the roof space that had already damaged ceiling joists. The building inspection alone wouldn't have caught this—but the pest inspection saved the buyers from inheriting a very expensive problem.
At Descom, our combined inspections follow both Australian Standards, giving you comprehensive protection without the hassle of coordinating separate assessments.
Final Thoughts: Why Perth Properties Need Professional Eyes
Building inspections aren't just another box to tick—they're your first line of defense in a property market where what you can't see often costs more than what you can.
Whether you're a first-home buyer stretching your budget in Balga, an investor looking at a development site in Alkimos, or a growing family upgrading in Willetton, the right inspection gives you:
Protection from costly surprises – Know exactly what you're buying or selling
Negotiating power – Use inspection findings to renegotiate price or terms
Peace of mind – Sleep well knowing your biggest investment has been professionally assessed
Compliance assurance – Verify that your new build meets the standards you're paying for
In Perth's unique environment—where coastal salt air corrodes, clay soils move, and termites thrive—professional inspections aren't an expense; they're an investment that often pays for itself many times over.
When you're ready to protect your property investment, we're here to help with local knowledge, technical expertise, and reports you can actually understand and act on.
FAQs
1. What is included in a building inspection in Perth?
A standard inspection includes structural checks, roof condition, moisture issues, safety hazards, drainage, and signs of pest activity—based on AS 4349.1 standards.
2. Do I really need a building inspection in WA before buying a house?
Yes. While not legally required, most Perth buyers include a building condition clause to avoid costly surprises like structural cracks or termite damage.
3. What is the difference between a building inspection and a pest inspection?
A building inspection focuses on structure and safety (AS 4349.1), while a pest inspection checks for termites, borers, and wood decay (AS 4349.3). Both are essential in WA.
4. How much does a building inspection cost in Perth?
Expect to pay $390–$750 depending on the inspection type. Combined building & pest inspections are the most popular and typically cost $450–$695.
5. What areas around Perth are high-risk for termites?
Suburbs near bushland and rivers—like Roleystone, Thornlie, and parts of the Hills—are especially prone to termite activity due to Perth's warm climate.
6. What should I look out for in a new home inspection in Perth?
Common issues include cracked slabs, poor waterproofing, roof frame defects, and drainage problems—especially in fast-paced developments.
7. How long does a building inspection take?
Most take 60–90 minutes. Combined inspections or handover inspections can take up to 150 minutes depending on property complexity.
8. What happens if my inspection finds major defects?
You can use the report to renegotiate price, request repairs, or withdraw from the purchase if protected by a building condition clause.
9. When should I book a PCI (Practical Completion Inspection)?
Book it before accepting handover from your builder—ideally when construction is "finished" but before keys are released. It's your last chance to spot defects.
10. Can I do a DIY inspection instead of hiring a professional?
You can use a checklist for minor issues, but DIY inspections won’t detect hidden defects or meet Australian Standards. Professional tools and training make a huge difference.