Plumber insurance has to deal with three things many trades never think about: water that keeps running after you leave, heat on the job, and services buried in the ground you are digging. A joint that weeps behind a wall for months can damage more property than a dropped tool ever will, and the claim finds its way back to the plumber who made the joint. This guide sets out what plumbers, drainers and gasfitters typically carry, where the gaps sit and what drives the price. For cover options, see our plumber insurance page.
Public and Products Liability with the Right Occupation Wording
Liability is the core of any plumbing insurance program. Public liability can respond to injury or property damage caused while you are working. Products liability, often called completed operations, can respond to injury or damage caused by your work after it is finished: the leaking fitting, the failed relief valve drain, the gas connection that was never quite right.
Both sections respond only to the business activity described on the schedule. “Plumber” on its own leaves a lot unsaid. Underwriters want to know how your work splits between:
- Domestic maintenance and new residential work.
- Commercial and industrial plumbing.
- Gasfitting, including appliance installation and conversions.
- Drainage and sewer work, including excavation.
- Roof plumbing and stormwater.
- Hot water system installation and replacement.
- Backflow prevention, fire services and medical gas work.
- Drain clearing with jetters and camera inspection.
If gasfitting or roof work is a real part of your turnover and the schedule simply says “domestic plumber”, a claim from that work can be disputed. Our article on why the occupation description matters explains how insurers use it. Update the description when your work mix changes, not just at renewal.
Water Damage: How the Policy Treats It
Escaping water is the claim that defines plumbing liability, and it is where policy mechanics matter most.
- Resulting damage versus the work itself. Liability policies generally exclude the cost of redoing faulty work. If a fitting fails, the damage to floors, cabinetry and ceilings may be claimable; replacing the fitting usually is not.
- Property you are working on. Many wordings exclude damage to the specific part of the property you are working on, or to property in your care, custody or control. An old clay pipe that cracks during jetting can fall into that exclusion. Check how your wording defines it.
- Gradual leaks. A slow leak can run for months before anyone notices. The policy in force when the damage occurs usually matters, which is one reason to keep liability cover continuous even when work slows.
- Excess. Some policies apply a higher excess to water damage or to particular types of work. Know yours before you price a job.
Pressure test records, photos of concealed work before it is closed in, and signed job sheets all help when a claim arrives long after the job.
Hot Work and Fire
Brazing copper, soldering in ceiling spaces and torch-on membrane work on roofs all put a flame near combustible material. Some liability policies carry hot work conditions: clearing combustibles, keeping an extinguisher at hand, and watching the area for a period after the work stops. Some apply a higher excess for fires caused by hot work, and many commercial sites run their own permit systems.
Read the condition. If the wording requires a fire watch and you cannot show one was kept, that becomes an argument at claim time. Where practical, press-fit and other flameless joining methods reduce the exposure, and it is worth telling the underwriter when you use them.
Underground Services and Drainage Work
Sewer connections, stormwater and drainage work put you in the ground next to gas, water, power and telecommunications services. A service strike can bring repair costs, emergency response and claims from people who lose supply. Locate services before every dig and keep the records. Tell your broker if excavation or directional boring is part of the work, because it changes how the risk is rated and what liability limit makes sense. Some policies also carry sub-limits, higher excesses or specific conditions for underground services damage.
Tools, Cameras and Specialist Gear
A plumber’s van often carries more value in specialist equipment than in hand tools: drain inspection cameras, pipe locators, jetters, press tools and threading gear. Tools of trade insurance can respond to theft and damage on site, in transit and at home, depending on the wording.
- List high-value items individually with serial numbers rather than relying on an unspecified tools limit.
- Check the theft-from-vehicle conditions. Many require signs of forcible entry, and some restrict cover overnight unless the vehicle is garaged or in a locked yard.
- Trailer-mounted jetters and vacuum units may need to be insured as plant or as a trailer, not as tools.
Your Van and What Sits Inside It
Declare trade use, list every regular driver and note the fit-out. Shelving, racking, roof pipe racks and signwriting are accessories that should be declared, and the tools and stock inside the van normally sit outside the motor policy. If you carry gas cylinders or fuel for a jetter, say so.
Contract Works on Renovation Jobs
When you work under a builder, the builder normally insures the project works. When you contract directly with a homeowner for a bathroom or laundry renovation, you may be responsible for the works until handover, including tiling, waterproofing and fixtures other trades install under your contract. Contract works insurance can be arranged annually or per job. Read the insurance clause in your contract, and check with your state regulator whether any separate requirements apply to renovation work of that size, because those rules vary by state.
Personal Accident and Sickness
Plumbing is hard on the body: crawl spaces, trenches, ladders and roofs. As a sole trader or working director you may sit outside workers compensation for your own injuries, and those arrangements vary by state. Personal accident and sickness insurance can pay a weekly benefit while you cannot work. If you employ apprentices or staff, workers compensation obligations apply and also vary by state, so check the current requirement with your state scheme.
What Drives Plumber Insurance Premiums
There is no list price. Underwriters look at:
- Turnover and wages. The base for liability rating.
- Work mix. Gas, drainage, roof, commercial and industrial work each rate differently from domestic maintenance.
- Liability limit. Builders and commercial clients commonly ask for a specified limit, and higher limits cost more.
- Subcontractors. Payments to subcontractors, and whether they hold their own cover.
- Claims history. Water damage claims in particular.
- Excess. A higher excess generally lowers the premium.
- Documentation. Pressure tests, compliance certificates and job photos support a better offer.
If you run a crew across several trades, our insurance for tradies page shows how the wider program fits together.
Common Questions
Do plumbers need public liability insurance by law?
Requirements vary by state and licensing body, so check the current requirement with your regulator. In practice, builders, property managers and commercial clients commonly ask for a certificate of currency before you start.
Will my policy pay to replace a fitting that failed?
Usually not. Liability policies are generally designed for the damage the failure causes, not the cost of fixing your own work. The wording decides where that line sits.
Does gasfitting need to be declared separately?
Yes. Declare gas work specifically, including appliance installation and any commercial or industrial gas work, so the occupation description matches what you do.
Talk It Through
Request a quote or call 1300 983 940 and we will set up your plumber insurance around the work you actually do.
General advice only. This article does not take your objectives, financial situation or needs into account. Consider the relevant PDS and Target Market Determination before deciding on a policy.