How to Read a Building Defects Report Like an Investor
Buying a home in Perth is stressful enough without worrying you have missed a big problem hiding in plain sight. Many buyers get stuck on the easy things to see, like old paint or worn carpet, and feel pleased when the price looks sharp, but the real threats to value are often sitting quietly inside the building defects report in Perth, written in short notes that are easy to skim past.
When those notes relate to structure, moisture, safety, or strata, a so-called bargain can quickly turn into a money pit. That can mean months of disruptive repairs, hard talks with insurers, tension with neighbours or the builder, and a property that is harder to sell later. In this article, we explain how to read your report the way an investor would, so you can decide when to negotiate, plan repairs, or walk away, especially now with the market slowing and sellers having to negotiate if they want to sell.
As independent Perth-based building practitioners, we work with local construction methods, soils, weather and rules every day. We want you to use a professional report as a clear decision tool, not just a tick-box before settlement.
Structural Defects That Turn "Character" Into Cost
Many Perth homes have a bit of "character", including cracks and sagging here and there. Not every crack is a disaster, but some are early warning signs of expensive structural movement.
With our local soils and footings, you often see cracking from:
- Reactive clay soils in some areas that shrink and swell with moisture
- Poor compaction of fill around the home
- Inadequate or damaged footings under walls or piers
Hairline shrinkage cracks in plaster are usually cosmetic. What worries us more are:
- Stepped cracks in brickwork, especially near corners or windows
- Wide or uneven gaps that keep opening up
- Doors or windows that bind, stick or go out of square
- Floors that dip and wind
These can show that the building is still moving. At that point, structural engineering advice may be needed, and lenders, insurers and buyers will all want clear answers before they feel comfortable.
Roof structure is another big value trap. In a report, pay close attention to comments about:
- Sagging or uneven ridgelines
- Cut or altered trusses or rafters
- Corroded brackets, straps or fixings
- Poor tie-downs to metal roofs that could struggle in strong winds
Perth's winter storms can turn a small roof defect into uplift, leaks and emergency call-outs overnight.
Alterations and additions can be even trickier. Older homes with extensions, open-plan cut-outs or extra levels sometimes hide:
- Removed load-bearing walls without proper beams
- Inadequate piers or posts under new loads
- Non-compliant balconies or decks with poor support
Fixing those issues can mean major structural works, building permits and invasive investigation. That is when a cheap-looking property can quickly lose its shine.
Moisture, Mould and Waterproofing Money Pits
Many buyers skim straight past small notes on damp, because the wording looks mild. Short comments like "elevated moisture readings" or "evidence of damp staining" in a building defects report in Perth can actually be red flags.
Common causes include:
- Failing or bridged damp-proof courses in brickwork
- Rising damp from poor site drainage
- Leaking bathrooms or showers
- Roof leaks around flashings and penetrations
- Garden beds, reticulation or paving too high or too close to walls
Bathroom, laundry and balcony waterproofing has a limited life, especially if it was not done well at the start. Defects we often see include:
- Cracked or drummy tiles
- Loose or missing grout and silicone
- Ponding water on balconies rather than flowing to drains
- Inadequate fall and poor drainage
- Missing or failed flashing to parapet walls
Many buyers think these are simple "re-grout and re-silicone" fixes. Often that only hides the issue for a short time. Proper repairs might need full removal of tiles, new membranes and rebuilt substrates, which can be disruptive for anyone living in the home.
Persistent moisture also affects health and resale. Damp structures can grow mould, cause musty smells and slowly damage timber framing or floor systems. For people with allergies or asthma, that can make day-to-day life uncomfortable. When you eventually sell, buyers and valuers tend to take any history of leaks or mould seriously.
Services, Safety and Non-Compliance Time Bombs
Service systems are easy to ignore because most of them are hidden. But they can carry big safety and financial risks.
On the electrical side, watch for notes on:
- Missing or non-functional RCDs
- Old-style or crowded switchboards
- Suspected DIY or unlicensed wiring
- Lack of interconnected smoke alarms to current WA standards
These issues can affect insurance cover and legal risk, especially for landlords and investors. If there is a fire or electrical incident and the property is not compliant, the fallout can be serious.
Plumbing, gas and drainage also feature heavily in defect reports. Typical findings include:
- Old or corroded pipework
- Suspected leaks under slabs or in walls
- Inadequate stormwater disposal away from the home
- Unlicensed alterations to gas appliances or pipework
In Perth's heavy winter rain, poor drainage or blocked stormwater can lead to flooding, slab heave and more damp problems. Gas faults usually become more obvious in cooler months when appliances run harder.
Older properties can also contain asbestos or other legacy materials. A report may flag these as "suspected" because destructive testing is not done at a standard inspection. Buyers often miss the flow-on effects, which can include:
- Costs of professional testing and lab analysis
- Licensed removal and disposal when you renovate
- Extra safety planning for tenants and trades
These are not reasons to avoid older homes altogether, but they are important to factor into your long-term plans.
Strata and Common Property Defects That Drain Your Budget
With strata properties, your report is only one part of the puzzle, and the big costs often sit in areas you do not own directly. Strata inspections relate to completed buildings and shared areas, not buildings still under construction, so the focus is on what the group of owners will face together.
Common property issues that can lead to large levies include:
- Façade cracking or movement
- Roof membrane failures on flat roofs
- Leaks through podiums, planters or carpark slabs
- Lifts or mechanical systems nearing the end of their life
A good strata-focused building defects report in Perth should highlight patterns, not just one-off items:
- Repeated water ingress in the same zones
- Ongoing structural concerns that have been patched, not fixed
- Ageing services that are past their expected life
This helps the owners' corporation plan long-term maintenance instead of rushing into emergency works every season.
You can also cross-check:
- Report findings against strata meeting minutes
- Budgets and reserve funds against the size of known issues
- Any notes about disputes with builders or developers
Red flags include repeated leak complaints, unresolved structural issues, litigation and sinking funds that seem light for the age and size of the complex.
Using Your Report to Negotiate, Plan or Walk Away
Once you understand the main risk areas, the next step is turning a technical report into a clear decision. A simple way to start is to group items into:
- Urgent safety issues
- Structural movement or support concerns
- Moisture and waterproofing problems
- Services and compliance items
- Cosmetic defects
From there, you can seek ballpark repair advice from the right trades or specialists, using the report and photos as a guide. This helps you see which items need attention soon and which can wait.
An independent report is also a strong tool for contract negotiations. Buyers often:
- Ask for specific repairs to be completed before settlement
- Seek contract conditions around further investigation
- Adjust their offer to reflect the real condition of the property
Sometimes the risks are too high or too uncertain for your budget or tolerance. Other times, defects are manageable if you plan staged repairs and upgrades.
At ABBC Building Inspectors in Perth, we encourage buyers to ask questions after reading their building defects report in Perth, instead of guessing what technical comments mean. When you understand the real-world impact of structural, moisture, services and strata issues, you can protect your safety and comfort now, while also looking after your future resale potential in a changing property market.
Get Started With Your Project Today
If you are planning construction or renovation work near existing structures, ABBC Building Inspectors can help you protect yourself from costly disputes with a detailed building defects report in Perth. We take the time to clearly document existing conditions so you have a solid record before any work begins. To discuss your project or request a quote, simply contact us and we will guide you through the next steps.
