Insurance Valuations: Are You Sufficiently Covered If You Need to Rebuild?
Most property owners set their building insurance figure once — often based on the purchase price, a bank valuation, or a rough online calculator — and never revisit it. It's one of the most common and costly insurance mistakes property owners make, and it usually only comes to light after a fire, flood, or storm event, when it's far too late to fix.
What Is an Insurance Valuation?
An insurance (or reinstatement) valuation is an assessment of what it would actually cost to demolish and rebuild your property to its current standard, at today's construction costs — not its market value, and not its original purchase price. These are three very different numbers, and confusing them is where underinsurance begins.
Why Market Value and Rebuild Cost Are Not the Same
Market value reflects what a buyer would pay for land plus building, in the current property market. Rebuild cost reflects the actual construction cost of reinstating the structure, including demolition, site costs, professional fees, and current material and labour rates. In many regional and coastal markets, these two figures can diverge significantly — and it's rebuild cost, not market value, that your insurance sum insured should reflect.
How Underinsurance Happens
Underinsurance typically creeps in through:
Set-and-forget policies that haven't been updated in years, while construction costs have risen
Renovations and extensions that increase floor area or finish quality without a corresponding update to the sum insured
Generic online calculators that apply broad averages rather than a genuine measured assessment of your specific property
Regional cost variations that aren't captured by national average rebuild rates
The Real Cost of Getting It Wrong
Most building insurance policies include an "average" or co-insurance clause. In simple terms, if your property is insured for less than its true rebuild cost, the insurer can reduce any claim payout by the same proportion you're underinsured — even for a partial loss. Being underinsured by 20% could mean your payout for a partial claim is reduced by roughly the same amount, at exactly the moment you can least afford it.
What a Professional Insurance Valuation Involves
A quantity surveyor-prepared insurance valuation typically includes:
A site inspection or detailed review of building plans and specifications
Measurement of the structure's floor area and construction elements
Application of current, location-specific construction rates
Allowances for demolition, debris removal, and professional fees
A clear, defensible reinstatement figure to provide to your insurer
Who Should Get One
Insurance valuations aren't just for homeowners. Strata schemes, commercial property owners, developers, and government and education asset managers all carry the same risk of underinsurance — often at a much larger financial scale.
How Often Should You Review It?
As a general guide, an insurance valuation should be reviewed every 3–5 years, or sooner after a significant renovation, extension, or a period of notable construction cost inflation — which has been particularly relevant across the building industry in recent years.
Peace of Mind, Properly Calculated
An insurance valuation is a modest, one-off cost compared to the financial exposure of discovering you're underinsured after a loss. It's a straightforward way to make sure that if the worst happens, your payout actually reflects what it will cost to rebuild.
Duncan Collective provides insurance valuations for residential, commercial, and strata properties across the NSW South Coast and Canberra/ACT. Contact us to make sure your cover genuinely reflects your rebuild cost.