Commercial Building Insurance in Brisbane

The converted house. Older timber houses used as professional offices, medical suites and allied health rooms are a Brisbane staple. They're the hardest of the four to put a rebuild figure on, because the right figure depends on how much house is left. A building that still reads as a house with a tenant in it and a building that has been stripped and rebuilt inside as a clinic are two different rebuild propositions, and the classification chosen at quote time follows the building, not the tenant's trade. Get it wrong and the sum insured is wrong from day one.

Hard to value isn't the same as hard to insure, and owners of these buildings usually expect the wrong answer here. In our experience the old Queenslander used as a professional services office is one of the easier commercial buildings to place, and it prices well. Timber construction sounds like a problem and mostly isn't one, because what an insurer is really rating is what happens inside the building: a quiet, office-based professional tenant is a low hazard occupation and not much goes wrong in one. The work on these buildings is in getting the rebuild figure right, not in finding someone to cover them.

The inner-city commercial building or office floor. Usually the best documented of the four and usually the one where the building sum insured has drifted furthest from the cost of construction, because nobody revisits the question between renewals.

The industrial shed or warehouse. Plant and stock values grow quietly inside these until the schedule no longer describes the risk. The building and its contents are separate covers and both drift. Our industrial building insurance and warehouse insurance pages deal with each in turn.

The suburban shop strip and the mixed-use building. Shops below and units above is where commercial building cover and commercial strata cover meet, and it's where owners most often discover that half of what they thought they insured sits in someone else's policy. Commercial strata insurance explains which half is which.

A FloodWise Property Report is generated from Council's Flood Awareness Map by entering the address, and it covers river, creek, overland flow and storm tide flooding (Brisbane City Council, FloodWise Property Report).

Overland flow is water running across the ground on its way to a drain or a creek, and it doesn't need a river anywhere near it. A building on a rise, three suburbs from the Brisbane River, can still sit in an overland flow path. Council's flood planning provisions in Brisbane City Plan 2014 treat these as separate hazards for exactly that reason, with five flood planning areas covering river and creek flooding, a separate area for local overland flow, and storm tide mapped on its own.

Whether flood is covered at all is the first thing to check. Flood isn't treated the same way by every insurer: on several of the wordings we place it's an optional extension that has to be switched on, and on others it's built into the property damage cover from the start. The only reliable way to know is to read your own schedule, which is a thing we'll do with you on the phone.

The second thing to check is whether the answer is the same for the building and for what's inside it. A policy can carry flood on the building and not on the stock, plant or fitout, and the gap doesn't announce itself until a claim.

How we work out what flood means for your address

Two of our nine insurers include flood automatically and will only take an address where the flood risk is low, so their answer is a test in itself: if they price the building, the market is telling us the flood exposure at that address is low. If they won't, we know to look harder, and we generally go and test what flood costs with the rest of the panel rather than leaving the question open.

Where the flood premium is small against the policy, our recommendation is almost always to take it, because the address has just told us something. Where it's large, or where the panel declines it outright, that's a conversation we have with you rather than a line item you find later.

What changed in the Brisbane flood market after 2022

Insurers didn't change how they treat Brisbane commercial buildings generally after the 2022 floods. What changed, and changed sharply, was flood.

Several insurers repriced their flood rating heavily and came off risk for a great deal of flood cover in this part of the country. Fewer insurers are writing it than were writing it before, and the ones still prepared to price certain Brisbane flood exposures are materially more expensive than they used to be, or will decline the address altogether.

Council's description of a local heritage place is plain: it "reflects aspects of Brisbane's local history and culture". Once a place is listed, in Council's words, "you will need approval for any future development, unless the changes are exempt by an exemption certificate".

The Traditional building character overlay is the second, wider layer. Council applies it to "some areas and streets of older suburbs that have a distinct identity based on building character, materials, layouts and setbacks", with the stated purpose of maintaining the "traditional, pre-1947 streetscape" (Brisbane City Council, Heritage and character properties).

Neither overlay changes whether a building can be insured.

• It's checkable, and it isn't your homework. Council's City Plan online mapping tool takes an address and shows which overlays apply, and Council publishes a Property Lot Report from the same tool. The Queensland Heritage Register is a separate state-level list with its own search, so a building can be on one and not the other.
• Tell your broker either way. Heritage and character status is a material fact about the building. An insurer that finds out at claim time that the reinstatement is constrained by an overlay nobody disclosed is an insurer with an argument available to it.

No insurer is checking whether your sum insured is right. An underwriter isn't a valuer, and it isn't their role to advise you on the number. The number is yours and your broker's to get right, and if it's wrong the first person to say so is usually the loss assessor.

Non-residential building construction costs across Australia rose 4.4 per cent in the year to June 2026, and about 40 per cent since 2018 (Australian Bureau of Statistics, Producer Price Indexes, construction, released 31/07/2026). That's the figure we work from on every building, here as anywhere else. For context, the same ABS series ran higher again in Queensland over that year, at 8.7 per cent. Either way it measures what builders charge, not a Brisbane figure and not a quote on your building.

Separately, and on our own book rather than on any index: across the commercial buildings that come to us after a renewal shock, we usually find the sum insured sitting 30 to 40 per cent below what a rebuild would actually cost. The two things aren't the same measurement and one doesn't prove the other, but a sum insured set three or four years ago and nudged along by a small annual percentage is the shape of number that ends up there.

That gap does two different kinds of damage. On a partial loss, which is the overwhelming majority of claims, most commercial wordings carry an average or co-insurance clause: across the business pack wordings we place, as at August 2026, the test is generally set at 80 per cent of the true value and some wordings set it at 85 per cent, so the figure in your own policy is the one that counts, and insuring below that figure means the insurer reduces the payment in proportion to the shortfall. On a total loss there is no clause to argue about. The insurer pays the full sum insured and the owner then discovers the full sum insured doesn't rebuild the building. The full mechanics, including the arithmetic, are in the co-insurance clause explained and underinsurance in commercial buildings, and how a genuine rebuild figure is put together is in how to calculate your building sum insured.

A Brisbane building, three months before the 2022 floods

This one is ours, and it is the reason we are as insistent about the sum insured as we are.

A commercial building owner at Virginia, on Brisbane's north side, was one of the first clients through our desktop building replacement valuation programme, which we had only started running a few months earlier. The valuation said the building needed a 40 per cent increase in its sum insured, which meant about a 25 per cent increase in premium. That is not an easy conversation to have with anybody, and the account manager on the file, Debbie Blanco, who wrote this page, put the recommendation to the owner and kept putting it. The owner agreed to it.

Three months later the building was flooded in the February 2022 floods. It was a large partial loss and the insurer paid about $745,000. Because the sum insured had been brought up to a genuine rebuild figure before the event, there was no underinsurance left for the co-insurance clause to bite on, and the payment was not cut back. Had the number stayed where it was, the same claim would have met the co-insurance clause.

That is one claim on one building and it is not a promise about yours. What it does show is that the gap between a sum insured and a rebuild cost is not an abstraction, and that the window to fix it closes without warning.

On several of the wordings we place, the co-insurance clause is switched off entirely where the sum insured is the full figure in a current professional valuation by an approved valuer. We commission a desktop building replacement valuation at no cost to you, so the figure is settled before the policy is written rather than after the loss.

If your Brisbane building's sum insured hasn't been tested against a real rebuild figure since you bought it, that's the one call worth making today. Ring 07 3292 1111 and we'll start there.