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Insurance planning

Owner-Builder Insurance: Questions and Cover Types to Investigate

Ashley BrennanUpdated 11 July 2026General starting guide

Insurance needs are project-, policy-, and jurisdiction-specific. This page identifies common topics to discuss; it does not tell you which cover is legally required, adequate, available, or suitable for your build.

Do not rely on old thresholds, generic premium ranges, or another project's policy. Obtain current written advice, quotations, policy documents, and regulator information for your circumstances before work starts.

1. Home warranty or building-compensation schemes

Eligibility, thresholds, who obtains cover, when it applies, exclusions, resale obligations, and available providers differ by jurisdiction and by whether you are an owner-builder or engage a contractor. Confirm the current position directly with the regulator, insurer, and a qualified adviser.

2. Contract works or construction insurance

Ask what property and temporary works are insured, when cover starts and ends, which events and materials are included, how existing structures are treated, and what excesses, security conditions, limits, and exclusions apply.

3. Public liability

Discuss the activities, property, people, contractors, neighbouring property, limits, exclusions, and period that need cover. Do not assume a contractor's policy covers your own acts, omissions, or contractual responsibilities.

4. Workers compensation and workplace injury

Employment, contractor, deemed-worker, payroll, principal-contractor, and workplace obligations are fact-specific. Confirm worker status and insurance duties with the relevant authority and professional advisers before anyone starts work.

5. Existing home, contents, tools, plant, and materials

Tell your existing insurer about the proposed work and ask for written confirmation of continuing cover and exclusions. Separately confirm responsibility for contractor tools, hired plant, stored materials, transit, theft, and damage to existing property.

Questions to take to an insurer or broker

Which named insureds, sites, activities, structures, materials, people, and periods are covered?

What limits, sublimits, excesses, conditions, exclusions, notifications, and security requirements apply?

How do demolition, excavation, asbestos, water ingress, storm, theft, vacant property, existing structures, and neighbouring property affect cover?

What must each contractor, consultant, supplier, or hirer insure, and what evidence should you retain?

What changes must be disclosed during the project, and when does cover end or need to be replaced?

Which current legal or approval requirements must be confirmed with the regulator, certifier, or legal adviser?

Keep certificates, schedules, product disclosure statements, endorsements, correspondence, claim instructions, renewal dates, and evidence supplied by contractors with the project record. A certificate of currency alone does not explain the full cover or exclusions.

This article sits within the Owner-Builder Planning Guide, a broader view of the journey from early planning through to handover.
About this article: It may combine general research prompts, personal commentary, simplified examples and fictional scenarios. Do not treat any figure, timeline, quote, event, project status or outcome as a prediction for your build. Content may be incomplete or out of date and is not financial, legal, insurance, tax, engineering, quantity-surveying, compliance or construction advice. Check current project-specific information with official sources and appropriately qualified professionals.
General educational information only. Confirm current requirements and suitable cover with the relevant authorities and qualified advisers.
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