Construction Cost Crisis Australia 2026
Construction costs are rising fast across Australia, material costs, diesel prices and much more. If you're a contractor or subcontractor with fixed-price contracts, you're absorbing cost increases those contracts won't let you recover. We've found the specific steps you need to take to protect your projects and business from these cost pressures.
Our solution
The construction cost crisis in Australia has involved sharp price spikes and a big rise in construction costs across multiple areas and inputs at the same time. This increase in prices is way more significant last week as compared with last year, and continues to get worse. The Middle East War and the spike in oil prices, as well as fertilizer and diesel shortages (plus product shortages caused by these events) are predicted to have global impacts for many months to come. This crisis in construction cost increases is hitting contractors, subcontractors and building companies across Brisbane, Queensland and Australia. Businesses on fixed-price contracts are particularly suffering.
The financial analysis that changes the numbers
Shannon Drew has modelled how six simultaneous cost inputs cascade through project margin, overhead, WIP reporting and cash flow on live construction projects. If you have not read this analysis, read it before you make any decisions about your projects and business during this Construction Cost Crisis.
Shannon's analysis covers the six simultaneous cost inputs hitting construction businesses right now, including fuel costs, building materials, labour costs, finance costs, subcontracting price increases and the wage price index. He works through what the construction cost breakdown actually looks like on live projects in Queensland and across Australia.
Shannon Drew, Management Accountant, Costs Accountant and Business Adviser
“Most contractors feel the margin squeeze before they can see it in their reports. I work through a real construction project with all six cost inputs and show exactly how the numbers move through your P&L, overhead recovery and business cash flow. The combined effect is consistently two to three times larger than what most businesses calculate when they look at diesel costs alone.”
Read Shannon’s financial analysis →We built this 8-Step Action Plan because construction businesses kept coming to us with the same problem and no clear path through it. Each step builds on the one before. Work through it yourself or read the full plan first.
Calculate Your Real Cost Exposure
Most contractors calculate diesel and stop. The full picture covers six cost categories and the combined number is consistently two to three times higher. You need a project-by-project total before any other decision is possible.
Audit Your Contract Rights
Read the full contract, including all schedules and special conditions, to find any rise and fall clause, price adjustment mechanism, or variation entitlement that applies to your cost increases.
Know What You Can Actually Claim
Assess your realistic options, from a contractual rise and fall entitlement through to a commercial negotiation, and make a clear decision about which path to take before approaching your principal.
Serve the Correct Notices
Most contracts impose strict timeframes for cost escalation notices. Missing the window can extinguish your entitlement entirely. This step needs to happen urgently, even while other steps are still in progress.
Prepare Your Claim Documentation
Build a documented package with the entitlement, the calculation, and the supporting evidence. A principal who receives a structured claim can take it to their board. An unsupported request gets rejected.
Approach Your Principal
Frame the conversation as a project delivery risk issue, not a contractor grievance. Come prepared with a specific dollar figure, a one-page cost summary, and a clear proposal.
Formalise Any Agreement on Sharing Price Rises with Your Principal
A verbal agreement is not a variation to the contract. Any cost recovery agreement must be executed as a deed of amendment before the project moves forward.
Protect the Business Going Forward
Address pricing, QBCC Minimum Financial Requirements compliance, business structure, and forward tender exposure. These decisions determine whether the business is better positioned for the next cost event.
Free Download
Rising construction costs. Fixed-price contracts. Six simultaneous cost inputs. If you are trying to work out what to do and in what order, this is the starting point. We have put the full 8-Step Action Plan into a clear summary you can read quickly, take to a board meeting or use to brief your project team.
Download our pdf summary of our 8-Step Action Plan, covering what to do, in what order, and which risk each step is designed to mitigate.
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Where the Cost Crisis Is Landing
Rising input costs and supply chain disruptions move through your contracts, your projects and your whole business at the same time. Find the area that applies to you.
Every unrecoverable cost increase comes directly off your margin. Most contracts contain no effective escalation mechanism. The question is whether yours is one of the exceptions, and what you can do if it is not.
Read: fixed-price contracts and cost increasesMost Australian escalation clauses calculate against a price index that moves slower than actual costs. Caps and base date limitations often reduce what you recover to well below what you have spent.
Read: rise and fall clauses in Australian construction contractsNotice time bars in Australian construction contracts typically run from 2 Business Days to 14 Business Days from the triggering event. A missed notice extinguishes an otherwise valid claim permanently.
Read: notice obligations for cost claimsThe 2026 Iran conflict pushed diesel prices, transport, plant and construction materials costs sharply higher. If your projects are fuel-sensitive, the gap between your tendered costs and actual cost-to-complete has grown significantly.
Read: fuel costs and construction in 2026When you cannot recover costs through the contract, the shortfall comes off margin. Less margin means less cash buffer across your whole business.
Read: how rising costs compress construction marginsConstruction failures across Australia are at record levels. The warning signs often do not show in management accounts until things are already serious.
Read: why builders go broke in AustraliaHow This Looks in Practice
The problem rarely sits in just one place. It moves across contracts, margin, cash flow and the whole business at the same time.
Subcontractor
Delivery is on track but margin has mostly gone. Variations are being knocked back and notice positions are not being used. The project is pushing risk back into the business.
The loss does not stay on the job. It flows into cash flow, supplier payments and decisions across other projects.
We work across contracts, recovery strategy, commercial positioning and cash flow to stabilise the business before things get worse.
Civil Contractor
Plant-heavy work across several jobs. Fuel, freight and input costs are hitting each project differently. Some remain viable, others are deteriorating, and the combined effect does not show up until working capital tightens.
By the time it reaches management level, the whole business is already affected.
We separate project-level issues from business-level risk, then prioritise recovery, escalation and cash flow protection across the portfolio.
Builder
Projects are running and money is coming in. But rising input costs, slow recovery and contract limits are squeezing margin across multiple jobs at once.
The business looks busy. But cash flow and exposure are building underneath.
We map contracts, commercial strategy and financial performance together, then reset priorities to protect the business.
Tradie / Sole Trader
Quoted the job months ago. Materials and fuel have moved since. The quote is still the price. Every job delivered at a loss chips away at the business, and there is no buffer to absorb it.
Small construction businesses and sole traders are particularly exposed because they have less room to absorb cost increases and fewer resources to fight for recovery.
We work out what your contracts actually allow, identify any recovery options, and help you make decisions that protect the business going forward.
All Articles, Analysis and Resources
Not every construction business is at the same stage. Some are still working out what their contracts allow. Others are already in active negotiations with principals. Others are watching cash flow tighten and working out how much time they have. Use the sections below to find the analysis that applies to your business right now.
Where contracts limit recovery and construction cost increases have moved beyond what was allowed for at tender. Covers fixed-price contracts, rise and fall clauses and force majeure.
Where timing, compliance and documentation decide whether recovery is still possible or has already been lost.
Where projects are still running but profit, overhead recovery and working capital are getting worse in the background.
Where you need to prepare your approach and manage the commercial response before making your next move.
Written and compiled by Rachelle Hare. Covers the 2026 fuel crisis, input cost data, supply chain analysis, contract risk, insolvency trends and the national outlook, with contributions from industry practitioners and government data.
Read the full reportThe cause of construction business insolvencies
Construction company insolvency rates in Australia are running at elevated levels. The pattern behind most construction insolvencies is predictable: a cost position that was manageable at tender becomes critical under delivery conditions, cash flow deteriorates before the margin loss shows clearly in project financials, and by the time the business is aware of the full position, the options have narrowed significantly. The cost crisis described on this page is a direct contributor to that pattern for businesses on fixed-price contracts signed before the current cost environment.
Read the full analysis of why construction businesses go broke in AustraliaBlaze Business & Legal
A contract issue affects cash flow. A cash flow problem creates structural exposure. Operational decisions carry legal consequences. Blaze Business & Legal addresses your contracts, commercial strategy, project finances, business structure and risk together. In construction, none of these are separate problems.
Construction Lawyer, Commercial Manager and Business Adviser
25 years working inside and alongside construction businesses, not advising from outside them. Rachelle has held in-house roles as Acting General Counsel, Senior Legal Counsel, Commercial Manager, Contract Administrator, Procurement Adviser and Risk Adviser across multiple Tier 1 and Tier 2 contractors. Her broad experience allows her to provide integrated support for the 8-Step Action Plan, including advice on contracts and contract rights, projects, commercial strategy, claims and claims preparation, procurement, risk, cost recovery, variation management, negotiation, contract drafting, business structuring and director obligations.
Management Accountant, Costs Accountant and Business Adviser
25 years working inside and alongside construction businesses at every scale. Shannon provides management accounting, cost accounting, fractional CFO services, commercial advisory, cash flow modelling, project profitability analysis, pricing strategy, WIP reporting, operational advisory and business advisory across the full scope of a construction business.
Blaze Business & Legal
We work out exactly what your contracts allow and where your financial risk sits across every live project. Then we implement the 8-Step Action Plan alongside you to protect your business from the Construction Cost Crisis.
Most accessible
Strategy Session
$750 + GST
60 minutes high-level discussion with Rachelle or Shannon. Verbal advice on a business issue or problem plus next steps.
Most requested
Contract Audit
$1,500 + GST
Written advice on your contract. What you can claim, how to claim it and risks. OR audit of your template for future contracts.
Most comprehensive
Business Triage
$1,975 + GST
2 hours discussion with Rachelle and Shannon plus a written report with our high-level recommendations across our 8 Steps.
