Plumbing businesses that buy through Insureon pay a median $147 a month ($1,768 a year) for general liability, $213 a month for a business owner's policy and $179 a month for workers' comp, per Insureon's August 2026 figures. Commercial auto is the largest line at $285 a month for plumbers with business-owned vehicles. Your price moves with the work you do (Insureon singles out commercial jobs, repiping, water heaters, and sewer and septic lines), your staff and payroll, location, years in business and claims history.
Most plumbing businesses pay about $147 a month for general liability and $213 a month for a business owner's policy (BOP), based on Insureon's figures for its own customers.
Price is one part of it. Our plumber insurance guide covers which policies you need and why.
Compare business insurance options
What Drives Plumber Insurance Cost Up or Down
- Type of work: Insureon says commercial jobs, repiping, water heater installation, and sewer and septic line work cost more to insure, because a failed job can lead to large water damage claims.
- Employees, subcontractors and payroll: more people on the job and a bigger payroll mean more exposure and a higher premium (Insureon).
- Vehicles: commercial auto is the largest line in Insureon's plumber figures at $285 a month, and its price depends on the vehicles, the limits you choose and your claims history.
- Tools and equipment: higher-value and heavily used equipment costs more to cover, and Insureon says items worth over $2,500 may need to be listed separately.
- Experience and claims history: newer plumbing businesses and those with more past claims pay more (Insureon).
- Location: areas with more natural-disaster exposure, foot traffic or crime price higher (Insureon).
Plumber Insurance Cost Breakdown
Premiums from Insureon's 2026 plumber cost data for its own customers (Insureon calls them averages; its method note describes median premiums):
| Coverage | Average Monthly | Average Annual |
|---|---|---|
| General liability (GL) | $147/mo | $1,768/yr |
| Business owners policy (BOP) | $213/mo | $2,559/yr |
| Workers' compensation | $179/mo | $2,150/yr |
| Commercial auto | $285/mo | $3,415/yr |
| Professional liability (E&O) | $67/mo | $808/yr |
| Commercial umbrella | $93/mo | $1,111/yr |
Worked example: 5-employee residential plumbing operation in Ohio, $750K revenue
A 5-person plumbing crew in Ohio doing mostly residential service work (drain cleaning, water heater replacement, leak repair), with $750K in annual revenue, two service vans and three years without claims. Insureon's median per-policy premiums for plumbers: BOP $2,559/yr (bundles general liability with business property cover), workers' comp $2,150/yr, commercial auto $3,415/yr and commercial umbrella $1,111/yr. Workers' comp is priced on payroll and class code, so a 5-person crew will pay more than the median policy; most Insureon customers have fewer than five employees. The auto premium likewise depends on how many vehicles and drivers the policy covers. Water heater work is one of the jobs Insureon says raises premiums, so expect insurers to ask how much of it you do.
Sum of Insureon median premiums for these coverages: $9,235/yr (sum of Insureon median per-policy premiums, not a quote)
This is an illustration built from Insureon's per-policy figures above, not a quote. Your premium depends on payroll, revenue, claims history, state and the insurer.
What You'll Be Asked When Quoting Plumber Insurance
Whether you quote directly online or work with an independent agent, these are the questions underwriters actually use to price plumbing businesses. Knowing them ahead of time saves back-and-forth and lets you compare quotes apples-to-apples.
What share of your work is residential service, and what share is commercial?
Insureon says commercial jobs cost more to insure than residential ones. Ask which workers' comp class codes your insurer uses, and split payroll between them to match the work.
Do you do repiping, water heater installation, or sewer and septic line work?
Insureon names these jobs as higher risk because a failed job can cause large water damage claims. Ask whether your policy limits or excludes any of them, and whether gas line work is covered.
Have you had water damage or other claims in recent years?
Insureon says a plumber with a long claims history will likely pay more than one with none. Have loss runs from your current insurer ready.
How many vehicles do you run, and who drives them?
Insureon says commercial auto cost depends on the vehicles, the limits you choose and your claims history. Ask how each driver's record affects your price.
What are your tools and equipment worth?
Higher-value and frequently used equipment costs more to insure, and Insureon says items worth over $2,500 may need to be listed separately. List what you actually own so you neither pay for cover you don't need nor come up short after a theft.
Do you hire subcontractors, or work as a subcontractor for a general contractor?
Insureon lists subcontractors and additional insured endorsements as general liability pricing factors. Bring any contract insurance requirements to the quote so the insurer prices the limits and wording you need.
How to Lower Your Plumber Insurance Cost
- Compare quotes on the same limits and deductible. Insureon's medians assume $1 million per occurrence, $2 million aggregate and a $500 deductible; a higher deductible lowers the premium.
- Ask about bundling professional liability. Insureon says plumbers can often bundle E&O with general liability for a combined median of $150 a month.
- Check whether you qualify for a BOP. Insureon says only small, low-risk businesses are eligible, and a BOP bundles general liability with property cover at a discount.
- Describe your work mix accurately. Commercial and residential jobs price differently (Insureon), so ask your insurer which class codes apply and split payroll to match the work you actually do.
- Keep water damage claims down. Insureon names water damage from failed jobs as a cost driver, and a long claims list raises your price.
Frequently Asked Questions
How much does plumber insurance cost?
Per Insureon's 2026 data, general liability averages $147/month ($1,768/year), a business owners policy averages $213/month, workers' compensation runs $179/month. Total premium depends on revenue, employees, state, and claims history.
What insurance do I need as a plumber?
Most plumbing businesses need: general liability (often bundled into a business owners policy), workers' compensation once you have any employees, commercial auto for any vehicles in the business, professional liability (E&O) if you provide advice or deliverables, commercial umbrella for excess liability limits. The specific mix depends on your operations, employee count, and any contractual requirements from clients or vendors.
How long does it take plumbing businesses to get insurance quotes?
Insureon says most small businesses can get covered within 24 hours of applying for quotes. Have your revenue, payroll, work mix, vehicle and driver details, and past claims ready, since those set the workers' comp and commercial auto prices.
Should plumbing businesses buy insurance direct or through an agent?
Either route works. Buying direct gets you one insurer's price; a broker, independent agent or online marketplace can return quotes from several insurers off one application. Whichever you use, compare quotes on the same limits, deductible and endorsements, and ask whether workers' comp and commercial auto are quoted with the rest or separately.
Does insurance cover water damage caused by my plumbing work?
It depends on your policy wording, so get the answer from your insurer in writing. Insureon names water damage from failed jobs, such as repiping, water heater installs and sewer lines, as a reason plumbers' premiums rise, and its professional liability example is a newly installed water heater that doesn't match the customer's specifications. Ask: does my general liability cover damage to a client's property from work I've already finished, does it exclude leaks that build up over time, and what per-occurrence limit applies?
Which plumbing insurance policy costs the most?
In Insureon's figures, commercial auto is the largest at $285 a month ($3,415 a year), followed by a business owner's policy at $213, workers' comp at $179 and general liability at $147. A commercial umbrella is $93 a month, professional liability $67, and surety bonds $8 a month ($100 a year).
Do plumbers need a surety bond?
Sometimes. Insureon says you may need a surety bond to get a plumber's license for certain types of work, and its plumbing customers pay a median $8 a month ($100 a year). Bond cost depends mainly on the bond amount. Check your state or local licensing board for the bond it requires.
Related Guides for Plumber Insurance
For an independent breakdown of which carriers actually write plumber insurance well in 2026, see our carrier comparison.
For the coverages plumbing businesses need and what insurers ask before they quote, see our plumber insurance guide.