Altus Group has released its Australian Construction Price Outlook for Q2 2026, the quarterly read on where build costs are heading across the capital cities. Construction cost increases Australia wide have been the quiet killer of fixed-price jobs since 2021, and a forecast like this one is the closest thing the industry gets to a weather report. Worth reading. Also worth being honest about what it can and cannot do for the job you are pricing on Tuesday.
Source: Australian Construction Price Outlook, Q2 2026 (Altus Group).
What a price outlook actually tells you
Cost outlooks are built for quantity surveyors, developers and lenders. They deal in escalation rates for a city and a sector: an apartment tower in Sydney, an industrial shed in Perth, a hospital fit-out in Brisbane. They are averages of large jobs, weighted by inputs that may have nothing to do with your job.
That does not make them useless to a small builder. It makes them useful for one specific thing: setting the direction and the rough size of your escalation allowance. If the outlook says costs in your city are still climbing through the next few quarters, a fixed-price contract with no rise-and-fall provision and a twelve month build is a bet you are taking with your own margin.
What it will not do is price your bathroom. Escalation is not spread evenly. Labour, structural steel, concrete, plasterboard, electrical cable and cabinetry hardware all move on their own clocks, and a headline of "costs rose modestly" can sit on top of one trade going up 15 per cent while another went nowhere.
Construction cost increases Australia wide: the free check on your own numbers
You do not need a subscription to sanity check a forecast. The Australian Bureau of Statistics publishes the Producer Price Indexes, Australia each quarter, and inside it are output price indexes for house construction and other residential building, broken out by state, plus input indexes for materials. It is free, it is quarterly, and it is the same data most commercial outlooks are calibrated against.
Two habits worth building:
- Once a quarter, pull the index for house construction in your state and compare its movement to what your own supplier invoices did over the same period. If your costs are rising faster than the index, that is a supplier conversation, not an industry problem.
- Keep the number. A twelve month history of your own cost movement is the strongest argument you will ever have in a variation discussion with a client.
Price for the day you buy, not the day you quote
The mistake is not failing to predict the market. The mistake is pricing a job at today's supplier rate and signing a contract that will still be running in fourteen months.
Three things that actually work:
Date your quotes and mean it. A validity period of 14 or 30 days, printed on the quote, and honoured. If the client comes back in March with a quote you wrote in October, it gets repriced. That is not being difficult, it is the only way a fixed price can stay fixed.
Understand your state's rules before you write a rise-and-fall clause. Price escalation clauses in domestic building contracts are restricted in several states, with the detail sitting in state legislation and standard contract forms rather than the NCC. Check with your state regulator (the VBA in Victoria, NSW Fair Trading, or the QBCC in Queensland) or use your industry association's contract, rather than drafting your own wording.
Quantify before you allow. A percentage contingency on a number you guessed is two guesses stacked. Do the take-off first. If you are pricing slab and footings, run the volumes properly with something like our concrete calculator, then apply escalation to a quantity you trust. Same with timber framing: size the members to AS 1684 and count them, rather than allowing a lump sum for "frame".
The leak is usually downstream of the forecast
Here is the part the outlook cannot tell you, and the part that costs most small builders more than material escalation ever did.
Margin does not usually disappear because steel went up 4 per cent. It disappears because a variation was agreed verbally on site and never invoiced. Because the same take-off was rebuilt three times in three spreadsheets and one of them had the old rate. Because a defect got fixed twice. Because GST was handled inconsistently across quote, progress claim and invoice, and someone absorbed the difference.
A forecast tells you the ground is moving. It does not tell you whether your own paperwork is watertight enough to stand on it. If your quoting still lives in a spreadsheet that only you understand, an escalation allowance is a band-aid. It is worth reading how other builders handle the pricing side in our rundown of the best construction estimating software, and the job-running side in the best construction project management software comparison.
What to do this week
Pull one quarter of ABS index data for your state. Check the expiry date on every quote you currently have outstanding. Pick your three highest-volume materials and ring the supplier for forward pricing. Then look at your last three completed jobs and work out what you actually made, against what you quoted.
That last number tells you more about your business than any national outlook will.
Built Simple is free to download on iOS and Android, with all 45 calculators on your phone and no signup needed. Take-offs, concrete volumes and material counts, done standing in the driveway before you write the quote.
