What Is Contract Works Insurance and Do Brisbane Builders Need It?
- Tim Jones
- May 26
- 8 min read
If you're a builder, contractor, or tradie working on construction or renovation projects in Brisbane. Whether you're the head contractor on a new build, a subcontractor on a commercial fit-out, or an owner builder doing up your investment property then contract works insurance is one of the most important policies you need to understand.
Most people in the building industry have heard of it. Far fewer actually understand what it covers, when it applies, and more critically: when it doesn't.
Here's everything you need to know about contract works insurance in plain language.
What Is Contract Works Insurance?
Contract works insurance also known as construction works insurance covers the physical works under construction against loss or damage before the project reaches practical completion.
In simple terms: if something happens to the building, structure, or works while they are being built and before the project is handed over to the client then contract works insurance is what pays to reinstate or repair the damage so the project can continue.
Without it, the cost of reinstating damaged work falls entirely on whoever is responsible for the project at the time, which is often the builder or head contractor.
What Does Contract Works Insurance Cover?
A standard contract works policy covers the works under construction against a broad range of events including:
Storm and weather damage — one of the most common claims in Queensland, where severe storms can cause significant damage to partially completed structures, roofing, and cladding.
Fire — particularly relevant during construction when temporary electrical connections, subcontractor activities, and the presence of flammable materials increase fire risk.
Theft — building materials and fixtures are a common theft target on construction sites, particularly overnight and on weekends.
Vandalism and malicious damage — unoccupied and partially completed structures are vulnerable to deliberate damage.
Accidental damage — incidents caused by workers, subcontractors, or equipment on site that damage the works themselves.
Collapse — structural failures during construction before the building is complete.
Flood — particularly relevant in Southeast Queensland where flood events can devastate partially completed structures at ground level.
Most policies also include cover for:
Existing structures — if you're working on a renovation or extension, damage to the part of the building not under construction can be included
Materials in transit — materials being transported to site
Materials on site — stored building materials awaiting installation
Debris removal — the cost of clearing and removing damaged materials following an insured event
Public liability — many contract works policies include a public liability component for the project, though this should be confirmed separately.
Storm damage to a partially completed building — why contract works insurance matters in Queensland
What Contract Works Insurance Does Not Cover
Understanding the exclusions is just as important as understanding what's covered.
Defective workmanship — the cost of rectifying faulty or defective work is not covered. If a concreter pours a slab incorrectly, the cost of removing and repouring it is not a contract works claim. However, damage caused by the defective work to other parts of the structure (the resultant damage) may be covered.
Wear and tear — gradual deterioration, corrosion, or normal wear and tear during construction is excluded.
Consequential loss — contract works insurance covers the physical reinstatement of damaged works. It does not cover financial losses arising from delays — such as loss of income, penalties under the contract, or additional financing costs while the project is held up.
Intentional acts — deliberate damage caused by the insured or their employees is excluded.
Mechanical and electrical breakdown — breakdown of construction plant and equipment is generally not covered under a contract works policy and requires separate plant and equipment insurance.
Who Needs Contract Works Insurance?
This is where a lot of confusion exists. Here's a clear breakdown of who needs what:
Licensed Builders and Head Contractors If you are the licensed builder or head contractor on a project, you are almost always responsible for arranging contract works insurance for the full project. Your contract with the client and Queensland building legislation will typically require you to hold this cover from the commencement of works until practical completion.
Subcontractors The position for subcontractors is more nuanced. In many cases, subcontractors are covered under the head contractor's or principal contractor's contract works policy for the works they are carrying out as part of the project. However, this is not guaranteed and varies significantly depending on how the policy is structured, how the subcontract agreement is worded, and what the head contractor's policy actually covers.
As a subcontractor, you should never assume you are covered under the head contractor's policy without:
Seeing a current copy of their certificate of currency
Confirming in writing that your scope of works is covered under their policy
Checking whether the policy responds to damage caused by your work specifically
If there is any doubt, arrange your own single project contract works policy or a contract works extension under your existing public liability policy.
Owner Builders In Queensland, if you are an owner builder undertaking significant construction or renovation works, you need contract works insurance in your own name. The builder's policy, if you have also engaged a licensed builder for some of the work does not automatically protect you as the owner. We cover this in detail in our guide to Owner Builder Insurance in QLD.
Renovators and Homeowners If you are a homeowner undertaking a significant renovation or extension using a licensed builder, your existing home and contents insurance policy is almost certainly inadequate during the construction period. Most standard home policies specifically exclude or severely restrict cover for properties under major renovation. A single project contract works policy in your name as the principal provides the protection your home and contents policy does not.
Single Project vs Annual Contract Works Policies
There are two main types of contract works policies available in Australia:
Single Project Policies These cover a specific project for its duration from commencement of works to practical completion. They are ideal for:
One-off renovation or construction projects
Owner builders
Subcontractors taking on a large single project
Builders who do not build frequently enough to justify an annual policy
The sum insured is based on the full contract value of the project.
Annual Policies These provide ongoing cover for all projects undertaken by a builder or contractor over a twelve-month period, up to a specified maximum project value. They are ideal for:
Licensed builders with a consistent pipeline of work
Head contractors managing multiple projects simultaneously
Trade contractors regularly engaged on construction projects
Annual policies are generally more cost-effective for builders and contractors doing regular work, as they avoid the need to arrange a new policy for every project.
How Much Does Contract Works Insurance Cost?
The premium for contract works insurance depends on:
The total contract value of the project or annual turnover of work
The type of construction residential, commercial, civil, industrial
The location and site conditions
The duration of the project
The excess selected
The specific covers included
As a rough guide for a Brisbane residential builder:
Single project policy on a $500,000 residential build: $1,500 – $3,500
Annual policy for a builder with $2M annual turnover: $4,000 – $8,000+
These are indicative figures only and the actual premium depends on the specific risk and insurer appetite.
Is Contract Works Insurance Compulsory in Queensland?
Contract works insurance is not universally mandated by law in Queensland in the same way that public liability insurance is required for certain licences. However, it is effectively compulsory in practice for most licensed builders because:
The Queensland Building and Construction Commission (QBCC) requires builders to hold appropriate insurance as a condition of their licence
The QBCC Home Warranty Scheme provides specific cover for residential building work but this is not a substitute for contract works insurance during construction
Most commercial contracts and principal contractor agreements require contract works insurance as a contractual condition
Head contractors frequently require evidence of contract works cover from subcontractors before allowing them on site
Financial institutions financing construction projects almost always require contract works insurance as a condition of the construction loan
What Happens If You Don't Have It?
The consequences of not having contract works insurance during a project can be severe.
A severe storm event in Brisbane can cause tens of thousands of dollars of damage to a partially completed roof structure overnight.
A site fire can destroy months of work and hundreds of thousands of dollars in materials in hours. Without contract works insurance, the cost of reinstating that damage is entirely yours to absorb and it can be enough to end a small building business.
Beyond the financial exposure, operating without required insurance can also jeopardise your QBCC licence, void your contracts, and expose you to personal liability for costs you have no capacity to cover.
The Relationship Between Contract Works and Public Liability
These two policies work alongside each other but cover different things.
Contract Works Insurance covers damage to the works themselves — the physical building or structure under construction.
Public Liability Insurance covers your legal liability for third-party injury or property damage arising from your construction activities.
Both are essential. A project on site without either policy in place has enormous uninsured exposure from two directions simultaneously.
Many contract works policies include a public liability component but the limit is often insufficient for larger projects and the cover may not extend to all parties on site. Always confirm with your broker whether the public liability in your contract works policy is adequate or whether a separate standalone policy is required.
What to Check Before Your Next Project
Before any new project commences, confirm the following:
Who is responsible for arranging contract works insurance — you, the head contractor, or the principal
Whether your scope of works is covered under any existing policy — get confirmation in writing
Whether existing structures are covered if you are working on a renovation or extension
What the sum insured is — it must reflect the full replacement cost of the completed works, not the contract price alone
When cover commences — some policies commence from when materials arrive on site, others from when physical works begin
What the excess is — and whether it is affordable in the event of a claim
The Bottom Line
Contract works insurance is not optional for builders and contractors doing significant construction or renovation work in Brisbane and Southeast Queensland. It is the policy that protects the work you are building and without it, every storm, fire, theft, or accident between commencement and completion represents an uninsured financial risk that could cost you more than the entire project is worth.
Getting the right policy in place, structured correctly from day one is one of the most important things a builder or contractor can do before breaking ground.
Monarch Insurance Brokers works with builders, contractors, and tradies across Brisbane, the Gold Coast, Wide Bay and Southeast Queensland to arrange contract works insurance that actually fits the project. If you're about to start a new build or renovation and want to make sure you're properly covered from day one, get in touch with Tim for a free policy review.
📞 Call 0431 656 254 🌐 Get a free policy review →
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This article is general information only and does not constitute financial product advice. Your circumstances may differ — speak to a licensed broker for advice tailored to your situation.
