About $147 a month
General liability
Insureon average for plumbing businesses, updated August 2026
Contractors and trades
Plumber insurance
For licensed plumbers and plumbing contractors doing service, repair, remodel and new construction work: the coverage that responds to water claims, what it costs and the license rules that set minimums.
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What similar businesses pay
- General liability
- About $147 a month
- Workers’ comp
- About $179 a month
- Commercial auto
- About $285 a month
Published benchmarks, not quotes. Your price depends on underwriting.
Cost
What plumber insurance costs
About $179 a month
Workers’ comp
Insureon average for plumbing businesses, updated August 2026
About $285 a month
Commercial auto
Insureon average for plumbing businesses, updated August 2026
About $42 a month
Tools and equipment
Insureon average for plumbing businesses, updated August 2026
Insureon’s figures are averages for small plumbing businesses that bought through it, most with fewer than five employees, revenue of about $50,000 to more than $200,000 and five years or less in business. Its general liability and business owner’s policy figures assume $1 million per occurrence, $2 million aggregate and a $500 deductible; a business owner’s policy averages about $213 a month. Commercial auto is the largest line in Insureon’s plumbing table. Water losses drive the rest: the Insurance Information Institute reports that homeowners water damage and freezing claims averaged $15,400 each from 2019 to 2023, so underwriters read any water claims in your loss runs closely. Florin, an independent broker that compares options from several insurers, can price your mix against these figures.
What moves your price
- Split between residential service and commercial or new construction work
- Gas piping, sewer and septic, backflow or medical gas work
- Payroll by role and subcontractor costs
- Number of vans and drivers, and driving records
- Water damage claims in your loss runs
- Your state, limits and deductibles
Risks
The risks insurers price for
Leaks from a fitting you installed
A compression fitting on a new water heater lets go a week after the job, or a PEX connection under a vanity weeps into the subfloor. Homeowners water damage and freezing claims averaged $15,400 from 2019 to 2023, per the Insurance Information Institute, and the homeowner’s insurer may pay and then pursue your business to recover it.
A misdiagnosed leak
Insureon gives the example of a plumber who misdiagnoses a slab leak and is then sued for water damage repairs, new flooring, repiping and mold remediation. Claims like this allege bad advice rather than bad workmanship.
Sewer backups and gas work
Drain and sewer work adds the risk of backups into finished basements, and many general liability policies exclude pollution. Gas line work raises the stakes of any mistake.
Burns, cuts and falls on the crew
BLS lists cuts from sharp tools, burns from hot pipes and soldering equipment and falls from ladders as the main injury risks for plumbers, pipefitters and steamfitters, an occupation of about 510,600 jobs in 2025.
Tools stolen from the van
Drain cameras, jetters, pipe threaders and press tools left in a van are frequent theft targets. Neither general liability nor most commercial auto policies cover them.
Coverage
Coverage to consider
General liability with completed operations
Pays for injury and property damage you cause to others, including water damage that appears after you leave the job. It generally does not pay to replace the faulty fitting or redo your own work.
How general liability works →Workers’ compensation
Pays medical bills and lost wages for employees burned, cut or hurt lifting water heaters and fixtures. California suspends a license whose workers’ comp lapses.
How workers’ compensation works →Commercial auto
Covers the service vans and pickups that carry crews, pipe and equipment between calls. Insureon reports about $285 a month for plumbing businesses.
How commercial auto works →Tools and equipment (inland marine)
Covers drain cameras, jetters, pipe threaders and press tools stolen from a van or damaged on site, which general liability does not cover.
Contractors pollution liability
Insureon lists it for accidental releases, contaminated water and hazardous material exposure, a gap that standard liability pollution exclusions can leave on sewer, septic and backflow work.
Professional liability
Responds to claims that your advice, design or diagnosis was wrong, such as a misread slab leak. Insureon reports about $67 a month for plumbing businesses.
How professional liability works →Umbrella
Adds limits above general liability and auto when a commercial customer or builder asks for more than your primary limits. Insureon reports about $93 a month.
How umbrella / excess works →Rules
Requirements and filings
BLS notes that most states and some localities license plumbers, usually after 2 to 5 years of experience and an exam, and several attach insurance minimums to that license. These examples were checked October 2026; builders and commercial customers often set higher limits and ask to be named as additional insureds.
| Requirement | Applies to | What it means |
|---|---|---|
| Responsible master plumber liability | Texas responsible master plumbers | At least $300,000 of commercial liability insurance, with a certificate of insurance signed by an agent (Texas State Board of Plumbing Examiners). |
| Public liability and property damage | Florida certified and registered plumbing contractors | $100,000 public liability and $25,000 property damage kept continuously, the licensing board as certificate holder and 30 days’ written notice of cancellation (rule 61G4-15.003). |
| Contractor bond | Every California licensed contractor | $25,000 contractor bond filed with the Contractors State License Board (CSLB). |
| LLC bond and liability insurance | California LLC licensees | A $100,000 employee and worker bond plus at least $1 million in liability insurance (CSLB). |
| Workers’ comp on the license | California plumbing contractors | An exemption is accepted only from contractors with no employees, and a lapse in coverage suspends the license (CSLB). |
| Workers’ comp election | Texas private employers | Private employers can choose whether to carry workers’ comp (Texas Department of Insurance). |
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One application, quotes from several insurers, reviewed by a licensed agent. Start with your email and finish later if you need to.
Pay less
How to lower the cost
- Pressure test every new installation and record the result, with photos, on the job ticket.
- Use written scopes that say what you inspected and what you did not, which helps defend diagnosis claims.
- Collect certificates of insurance from subcontracted excavators or drain crews before they start.
- Mark tools and keep vans locked and parked in lit areas to cut theft claims on your tools policy.
- Bundle general liability and property in a business owner’s policy if you have a shop and qualify.
- Keep coverage continuous: Florida’s rule makes any lapse in the required liability insurance a violation.
Before you start
What underwriters ask for
- License number and class, and the states and counties you work in
- Revenue split between residential service, remodel, new construction and commercial work
- Whether you do gas piping, sewer and septic, backflow testing, medical gas or fire sprinkler work
- Payroll by role and subcontractor costs
- Certificates of insurance from your subs
- Vehicle and driver list with license numbers and motor vehicle records
- Five years of loss runs, with details of any water damage claims
Common questions
Plumber insurance: questions
Does general liability cover a leak from a fitting I installed?
Usually it covers the resulting damage to the customer’s floors, walls and belongings under the completed operations part of the policy, subject to its terms. It generally does not pay to replace the faulty fitting or redo your own work.
Do I need workers’ comp as a one-person plumbing business?
It depends on the state. California lets a licensed plumber with no employees file an exemption with the license board, and Texas does not require most private employers to carry it, but customers may still ask for a certificate.
Are my tools covered if they are stolen from my van?
Not by general liability or most commercial auto policies. You need a tools and equipment policy, which Insureon reports costs plumbing businesses about $42 a month.
How much liability insurance does a Texas plumber need?
A responsible master plumber must carry at least $300,000 of commercial liability insurance, according to the Texas State Board of Plumbing Examiners. Commercial customers often ask for more; Insureon’s typical plumbing policy carries $1 million per occurrence.
Is a sewage backup covered by general liability?
It may not be. Many general liability policies exclude pollution, and Insureon lists contractors pollution liability for contaminated water and hazardous material exposure, so ask how your policy treats sewage before you take drain work.
Do plumbers need a surety bond?
Some states and cities require one. California requires every licensed contractor to file a $25,000 contractor bond, and Insureon reports that plumbing businesses pay about $8 a month for surety bonds.
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Sources (9)
- Insureon: plumbers insurance cost, updated August 2026
- Insureon: plumbers insurance
- Insurance Information Institute: facts and statistics on homeowners and renters insurance
- BLS Occupational Outlook Handbook: plumbers, pipefitters and steamfitters
- Texas State Board of Plumbing Examiners: responsible master plumber
- Florida Administrative Code rule 61G4-15.003: public liability insurance
- California CSLB: licenses for limited liability companies
- California CSLB: workers’ compensation requirements
- Texas Department of Insurance: workers’ compensation for employers
Figures are published third-party estimates, not quotes. Coverage depends on policy terms and underwriting, and rules vary by state. Updated October 2026.