Construction works insurance protects a building project while the work is still in progress. In Australia the same cover is sold as contract works insurance, and project policies often describe the protection as course of construction cover. The name changes depending on who is selling it, but the purpose stays the same: to pay for loss or damage to the works, the site and the materials before the job is finished and handed over.
For builders, trade contractors, subcontractors and developers, this cover usually sits alongside public and products liability, plant and equipment protection, and separate warranty obligations that apply to residential work in some states. Knowing where contract works cover starts and stops is what prevents a dispute after a fire, a theft or a storm on site.
What Construction Works Insurance Covers
Construction works insurance covers sub-contractor and trade contractor works in progress, should loss or damage occur during construction. That description is used by Master Builders, and it applies just as much to a principal contractor’s own work as it does to a subcontractor’s portion of a project. The cover is designed for construction-related activities and assets, either on a single project or on an annual cover basis.
In practical terms, a contract works policy is built to respond to:
- Building works in progress, including the structure as it is being constructed
- Materials and components on site that are waiting to be installed
- Loss or damage, including examples such as theft and vandalism at the site
- The insured’s legal and contractual obligations in relation to the contracted works
- Public and products liability, which HIA Insurance includes within its Construction Works product
The commercial logic is simple. Contract works insurance can help you avoid costly repairs or replacement costs that follow loss or damage to a construction project. Without it, those costs generally land on the builder, the subcontractor or the project owner, and on a partially completed structure the numbers add up quickly.
Construction Works, Contract Works and Course of Construction
These three terms describe the same class of cover. Master Builders notes that construction works is also known as contract works, and HIA Insurance uses the same pairing when describing cover for builders, tradies and subcontractors. Course of construction is the phrase that tends to appear in project-specific policies and lender requirements, because it describes the period the cover is written for.
Major insurers write the cover for jobs of all sizes. QBE, for example, positions its Contract Works insurance as cover before, during and after completion, which reflects how the risk changes across a project. A policy may be arranged for a single defined project or on an annual basis so that it follows a steady flow of jobs rather than one build at a time.

Who Needs Construction Works Insurance
Cover is commonly arranged by more than one party on the same site, which is why responsibility needs to be clear before work starts. The Queensland Building and Construction Commission, for instance, publishes guidance on insurance responsibilities for building contracts, and states that contract works insurance applies throughout the construction period until handover.
Subcontractors and trade contractors
If you are a subbie or trade contractor, you may need construction works insurance when you are working directly for the customer or the public, and many subcontractor agreements require it. Master Builders makes the point that subcontract agreements frequently require the subcontractor to arrange construction works insurance for their portion of a building project. Even when the head contractor holds a policy, checking the contract wording is worth the effort.
Builders, principal contractors and developers
Builders and principal contractors carry the broadest exposure because they hold the site, the programme and the contractual obligations to the owner. A contract works policy protects the works themselves, while liability cover responds to injury or property damage claims arising from the construction activity. Developers typically want confirmation of both before appointing a head contractor.
Cover That Usually Sits Alongside Contract Works
Construction risk is rarely handled by one policy alone. Brokers generally build a package that matches the way a business actually operates.
Public and products liability
Liability cover responds to claims from third parties, including members of the public and other trades on site. HIA Insurance’s Construction Works offering provides cover for public and products liability, which confirms how closely these two covers are usually packaged together for builders and subcontractors.
Plant, equipment and tools
Excavators, scaffolding, tools and temporary works are separate assets from the building itself, and they are generally insured under their own sections. Zurich provides tailored insurance solutions and risk engineering services across a range of construction projects, which reflects how insurers approach larger or more complex sites.
Builders warranty obligations
Warranty cover for residential work sits apart from contract works cover and is regulated differently between states. Eligibility and application requirements should be confirmed with the relevant state authority or an insurance broker before a contract is signed.

Single Project or Annual Cover
The two structures answer different business needs. A single project policy is written around one contract, while an annual policy covers a flow of work across a period.
| Basis of cover | How it works | Common use |
|---|---|---|
| Single project | Written for construction-related activities and assets on one defined project | One build or one major contract |
| Annual cover | Written on an annual cover basis across multiple jobs | Builders and trades running a steady pipeline of work |
Capacity and pricing vary by insurer, project type and contract value. Some underwriting agencies offer single project and annual contract policies on a contracts commencing or transfer basis, with limits up to $55 million, which shows the range of project size that can be placed through the market.
What to Check Before Cover Is Bound
Most disputes about contract works claims trace back to something that was never agreed at the start. Working through a checklist with a broker reduces that risk.
- Confirm the insured parties, including any requirement to note the head contractor, owner or financier
- Check the contract sum insured covers the full value of the works, including materials delivered to site
- Clarify who is insuring what, so the head contractor and subcontractors are not both assuming the other holds cover
- Match the policy period to the construction programme and the handover date
- Confirm whether the policy is written on a single project or annual basis
- Review the excess, the sub-limits and any exclusions that apply to your trade
Where a detail matters to your specific contract, verify it against the policy wording, your contract documents or the relevant state building authority rather than relying on a general description.

Why Construction Businesses Use a Broker
Construction insurance is placed in a market where appetite changes between trades, project types and contract values. A broker compares options, prepares the submission, explains what each policy actually covers and stays involved when a claim is lodged. For trades working directly for homeowners or the public, that support matters just as much as the policy itself.
The right starting point is a clear picture of the work you do, the contracts you sign and the values at risk on each site. With that information, construction works insurance can be structured so the works, the materials and the liability exposures are covered for the whole build, from first delivery to handover.
Frequently Asked Questions
Is construction works insurance the same as contract works insurance?
Yes. Master Builders and HIA Insurance both describe construction works as also being known as contract works. The cover protects building works in progress if loss or damage occurs during construction. Course of construction is another term used for the same protection, usually in project-specific policies arranged around a defined build period.
Does construction works insurance cover theft and vandalism?
The Queensland Building and Construction Commission notes that contract works insurance covers the site and materials against theft and vandalism through the construction period until handover. Exact wording, excesses and sub-limits differ between insurers, so the policy schedule and product disclosure statement should be checked before work begins on site.
Do subcontractors need their own construction works insurance?
Many subcontract agreements require a subcontractor to arrange construction works insurance for their portion of a building project. Cover may also be needed when a subcontractor works directly for the customer or the public. Reading the contract and confirming the head contractor’s arrangements avoids gaps or duplicated cover on the same site.
How long does contract works cover last?
Cover generally runs through the construction period until handover. QBE positions its Contract Works insurance as providing cover before, during and after completion, which shows that extensions are possible depending on the policy. The policy period should be matched to the construction programme, including any likely extensions of time.






