If you own a free standing home in Thornlie, WA 6108, you're probably curious about whether you're paying a fair price for your building insurance. Thornlie is a well-established suburb in the City of Gosnells, roughly 18 kilometres south-east of the Perth CBD. It's a popular family area with a mix of older brick homes and newer builds — and insurance costs here tend to reflect that stable, lower-risk profile. In this article, we break down a real building-only insurance quote for a 5-bedroom, 2-bathroom home in the suburb and put it in context with local, state, and national data.
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Is This Quote Fair?
The quote in question comes in at $1,308 per year (or about $128 per month) for building-only cover on a 5-bedroom free standing home with a sum insured of $679,000. The building excess is set at $2,000.
Our rating for this quote is FAIR — Around Average, and when you dig into the numbers, that assessment holds up well.
Based on a sample of 45 quotes from the Thornlie area, the suburb average sits at $1,260 per year and the median at $1,207. This quote lands just $48 above the suburb average and $101 above the median — a relatively modest gap given the size of the property (214 sqm) and the features involved, including a swimming pool, solar panels, and ducted climate control.
It's also worth noting that the 75th percentile for Thornlie premiums is $1,337, meaning this quote is actually sitting just below that threshold. In other words, roughly three-quarters of comparable quotes in the suburb come in at or below this price — so while it's not the cheapest option on the market, it's not an outlier either.
For a home of this size and specification, a "fair" rating is a reasonable outcome. There may be room to shop around, but you're not being significantly overcharged.
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How Thornlie Compares
One of the most striking things about this quote is how favourably Thornlie compares to broader benchmarks. Check out Thornlie suburb insurance stats for the full picture.
| Benchmark | Average Premium | Median Premium |
|---|---|---|
| Thornlie (suburb) | $1,260/yr | $1,207/yr |
| Gosnells LGA | $1,492/yr | — |
| Western Australia | $2,144/yr | $1,944/yr |
| National | $2,965/yr | $2,716/yr |
The numbers speak for themselves. Thornlie's average premium is 41% below the WA state average and a remarkable 57% below the national average. Even compared to the broader Gosnells LGA average of $1,492, Thornlie comes out well ahead.
You can explore WA state insurance data and national home insurance statistics to see just how much premiums can vary across the country. Homeowners in coastal Queensland, northern WA, or flood-prone parts of NSW routinely pay multiples of what Thornlie residents pay — a reflection of the much lower natural hazard exposure in this part of Perth's south-eastern suburbs.
The absence of cyclone risk in this area is a significant factor. Parts of northern and coastal WA attract substantial cyclone loading on premiums, but Thornlie sits well outside those zones.
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Property Features That Affect Your Premium
Several characteristics of this particular property influence what insurers charge. Here's a breakdown of the key factors at play:
Double Brick Construction
This is one of the most premium-friendly building materials in Australia. Double brick walls are highly regarded by insurers for their durability, fire resistance, and structural integrity. Homes built with double brick typically attract lower premiums than those with timber or clad exteriors.
Tiled Roof
Concrete or terracotta tile roofs are considered a lower-risk roofing material compared to Colorbond or corrugated iron in some contexts, and significantly lower risk than older materials like fibrous cement sheeting. A tiled roof on a double brick home is a reassuring combination for underwriters.
Slab Foundation
A concrete slab foundation is standard for Perth homes of this era and is generally viewed neutrally by insurers — it doesn't add risk the way some older or elevated foundations might.
Built in 1988
At around 37 years old, this home is mature but not ancient. Homes from the late 1980s in WA are generally well-constructed and don't carry the same concerns as pre-1970s homes that may have outdated wiring or plumbing. That said, insurers may factor in the age of key systems when assessing risk.
Swimming Pool
A pool adds replacement value to the property and can slightly increase premiums due to the cost of reinstatement. It also introduces some liability considerations, though these are more relevant under a home and contents or landlord policy.
Solar Panels
Solar panel systems are increasingly common on Perth homes, but they do add to the sum insured. A quality solar installation represents a meaningful rebuild cost that should be reflected in your building sum insured.
Ducted Climate Control
Ducted air conditioning is a significant fixed asset within the home. Like solar panels, it contributes to the overall replacement cost of the building and is worth ensuring your sum insured adequately covers.
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Tips for Homeowners in Thornlie
Whether you're renewing your policy or shopping for the first time, here are some practical steps to make sure you're getting the best value:
- Review your sum insured regularly. With building costs rising across Australia, a sum insured that was accurate two or three years ago may no longer reflect the true cost to rebuild your home. At $679,000 for a 214 sqm double brick home, this figure looks reasonable — but it's worth checking against a current building cost calculator each year at renewal time.
- Consider your excess strategically. This policy carries a $2,000 building excess. A higher excess generally means a lower premium, but make sure you can comfortably cover that amount out of pocket in the event of a claim. If cash flow is a concern, a lower excess with a slightly higher premium might be the smarter trade-off.
- Don't over-insure or under-insure your pool and solar. Both your pool and solar panel system should be factored into your building sum insured. Speak with your insurer to confirm that these assets are explicitly covered and that their replacement cost is included in your total.
- Shop the market at renewal. Even a "fair" quote has room for improvement. Insurers price risk differently, and switching providers — or simply getting a competing quote — can yield meaningful savings. The 25th percentile for Thornlie premiums is $898 per year, which shows that cheaper options do exist for comparable properties.
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Ready to Compare?
Getting a better deal on your home insurance starts with knowing what else is out there. At CoverClub, we make it easy to compare building insurance quotes for homes across Australia — including right here in Thornlie. Get a quote today and see how your current premium stacks up. You might be surprised at what's available.