Concrete Cancer Repair Cost Calculator
Estimate the cost of repairing concrete cancer (spalling), where rusting steel inside concrete expands and cracks it apart. The extent and access drive the cost, and catching it early is dramatically cheaper than a major structural repair.
Your concrete cancer repair details
Your estimate sits within the typical range.
Concrete cancer only gets worse and more expensive, the rusting steel keeps expanding. The cheapest time to fix it is the moment you first see rust stains, cracking or bubbling render.
💰 Ways to save
- Fix it early, isolated spots are cheap, a neglected balcony that becomes structural is not.
- Waterproof after repair, water getting to the steel is what caused it, so sealing it out prevents a repeat.
- On a strata building, get it assessed properly, patching the symptom without fixing the cause just delays a bigger bill.
or from $26/week over 5 years , indicative finance
How we estimate this
Concrete cancer repair in Australia typically costs around $1,500 to $5,000 for minor to moderate spalling in 2026, rising to $15,000 to $40,000 or more for extensive damage on a balcony or multi-storey building where access equipment and an engineer are needed.
Pricing reviewed: November 2026.
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Pricing reviewed November 2026. Indicative Australian costs, not a quote.
Understanding concrete cancer repair costs in Australia
Concrete cancer repair in Australia typically costs around $1,500 to $5,000 for minor to moderate spalling in 2026, rising to $15,000 to $40,000 or more for extensive damage on a balcony or multi-storey building where access equipment and an engineer are needed.
The cause is water reaching the steel reinforcement, which rusts and expands. Because it keeps worsening, early repair is far cheaper. On apartment buildings, access (scaffold or EWP) and engineering often cost as much as the concrete work itself.
Frequently asked questions
How much does concrete cancer repair cost in Australia?
Roughly $1,500 to $5,000 for minor to moderate spalling in 2026, and $15,000 to $40,000 or more for extensive damage needing scaffolding and an engineer, common on apartment balconies.
What causes concrete cancer?
Water reaching the steel reinforcement inside the concrete, which rusts and expands, cracking the concrete apart. It keeps worsening, so early repair and waterproofing are much cheaper than a structural fix later.
Are you a remedial / concrete repair contractor?
Everyone on this page is working out what concrete cancer repair costs because they are ready to hire. Put your business right beneath the calculator, in your state, so you are who they find. From $50/mo.