Everything tradies need to know about public liability insurance. Coverage limits, what's included, costs, and why it's practically mandatory in NZ.
Public liability insurance is the single most important insurance policy any tradie can have. It's practically mandatory in New Zealand—councils won't issue building consents without it, most contracts require it, and commercial clients demand proof of valid cover before awarding work. But what exactly does it cover, and how do you know if you have adequate protection?
What Is Public Liability Insurance?
Public liability insurance protects you against claims made by third parties—people or businesses outside your company—for accidental bodily injury or property damage caused by your work.
Imagine a scenario: You're installing a new kitchen, and your apprentice accidentally drops a power drill through a customer's kitchen window. The window is damaged, and there's a risk of injury. Or picture this: A concrete truck you're driving causes a collision with another vehicle, injuring the driver. Or another example: Your work causes a water leak that damages a neighbour's property.
In each of these situations, a third party (the customer, the other driver, the neighbour) could sue you for damages. Without public liability insurance, you would be personally liable for the full cost of repairs, medical expenses, legal fees, and court awards. With public liability insurance, your insurer covers these costs up to your policy limit.
Coverage Limits Explained
Public liability policies come with aggregate limits—the maximum your insurer will pay for all claims in a 12-month period. Common limits in New Zealand are:
- ✓NZ$1 million: Suitable for sole traders doing small residential work
- ✓NZ$2 million: Standard for most residential builders and tradies
- ✓NZ$5 million: Recommended for commercial work and larger projects
Higher limits provide greater protection and are often required by larger clients and councils for commercial projects. A single major incident—someone seriously injured, significant property damage—can easily exceed NZ$1 million in costs. Don't underestimate your coverage needs.
What's Covered?
Public liability typically covers:
- ✓Third-party bodily injury (medical expenses, permanent disability, lost income)
- ✓Third-party property damage (repair or replacement costs)
- ✓Legal defence costs (solicitor and barrister fees for defending a claim)
- ✓Court awards and settlements (amounts you're legally obligated to pay)
- ✓Investigation costs (insurer's costs investigating the claim)
What's NOT Covered?
Public liability has important exclusions:
- ✓Your own property or employees: Use contents insurance for your property; use workers' compensation for employee injuries
- ✓Contractual liability arising from breach of contract (usually)
- ✓Deliberate damage: If you intentionally cause damage, it's not covered
- ✓Poor workmanship (usually—though "completed works" insurance can provide some cover)
- ✓Professional errors or negligence in advice (use professional indemnity insurance)
- ✓Uninsured vehicles (for incidents involving your work vehicle)
Public Liability vs Other Policies
Public Liability vs Professional Indemnity: PL covers physical injury and property damage. PI covers financial loss from professional errors (bad advice, design mistakes). A design-and-build builder needs both.
Public Liability vs Workers' Compensation: PL covers third parties. Workers' compensation (through ACC levies in NZ) covers your own employees.
Public Liability vs Contents Insurance: PL covers third-party claims. Contents insurance protects your own property, tools, and equipment.
Costs and Premiums
Public liability premiums in New Zealand typically range from:
- ✓Sole trader: NZ$30–60/month
- ✓Small business (2–5 staff): NZ$60–120/month
- ✓Growing business (6–10 staff): NZ$120–250/month
- ✓Large business (11+ staff): NZ$250–500+/month
Premium is affected by:
- ✓Your trade: High-risk trades (electricians, roofers) pay more
- ✓Business size: More employees = higher premium
- ✓Claims history: Previous claims increase premiums
- ✓Turnover and project value: Larger projects = higher exposure = higher premium
- ✓Location: Some areas have higher claim rates
- ✓Experience: Newer businesses may pay more than established ones
Getting a Quote
Most insurers offer online quotes within minutes. You'll be asked:
- ✓What's your trade?
- ✓How many employees?
- ✓What's your annual turnover?
- ✓What types of projects do you do?
- ✓Any previous claims?
- ✓What coverage limit do you need?
Get quotes from multiple providers—prices vary significantly. You might save hundreds per year by comparing.
When You Need to Claim
If an incident occurs:
- 1.Report immediately: Contact your insurer within 30 days (ideally within 24 hours)
- 2.Provide details: Describe exactly what happened, who was involved, and any injuries or damage
- 3.Collect evidence: Photos, witness statements, site plans—anything supporting your account
- 4.Keep records: Documentation of your safety practices and incident response
- 5.Cooperate fully: The insurer will investigate; provide all requested information
- 6.Get legal advice if needed: For serious incidents, discuss with a lawyer before responding to insurers
Conclusion
Public liability insurance is non-negotiable for tradies in New Zealand. It's practically mandatory, essential for contracts and council work, and absolutely necessary for protecting your business against catastrophic claims. Choose an appropriate coverage limit, review annually, and ensure your policy is always active and current.
Don't leave your business exposed. Get public liability insurance today.
Sources & Further Reading
About the Author
Insurance Specialist & Founder
Darin has spent over 15 years working in commercial and personal insurance sales across New Zealand, Australia, and the UK. He founded Cover4You to help New Zealanders find the right insurance without the runaround. Having personally arranged insurance for hundreds of tradies, builders, and contractors, Darin brings a sharp eye for policy gaps and premium-saving strategies that general comparison sites miss.