Plumbing contractor insurance in Arizona

The Arizona ROC bond scales with your volume

Every Arizona plumbing license needs a bond or cash deposit, and the amount grows as your business grows. Under A.R.S. §32-1152, the bond has to be in force for the license to renew.

For a specialty commercial license, the law sets these ranges by annual volume:

• Under $150,000 a year: $2,500
• $150,000 to $500,000: $2,500 to $7,500
• $500,000 to $1 million: $5,000 to $17,500
• $1 million to $5 million: $7,500 to $25,000
• $5 million to $10 million: $17,500 to $37,500
• $10 million and up: $37,500 to $50,000

A specialty residential license posts $1,000 to $7,500. Dual licensees post one bond that covers both sides. Residential and dual licensees also have to choose between a separate $200,000 bond and paying into the Residential Contractors' Recovery Fund.

Our license bond page explains what a bond does and who it protects.

The Arizona Registrar of Contractors (ROC) licenses the contracting business statewide, and cities issue permits. Plumbing classifications include:

• Commercial: C-37 Plumbing, C-77 Plumbing Including Solar, and C-78 Solar Plumbing (liquid systems only)
• Residential: R-37 Plumbing Including Solar, and R-37R Plumbing (several subclasses are closed to new applicants)
• Dual: CR-37, CR-77 and CR-78

The Registrar of Contractors posts the full scope of each class.

Two scope rules matter for growth. General contractors must hand plumbing to a properly licensed plumbing contractor, and that rule is your opening into GC work. And C-37 work stays inside property lines, not in public easements or rights-of-way, except as the rules allow.

Arizona workers' comp starts with your first employee

Arizona requires comp from any employer with workers regularly employed in the same business, and part-year work counts. One helper is enough.

A sole proprietor isn't covered automatically, but an owner can be added if the insurer accepts it in writing.

The Industrial Commission of Arizona oversees the system. Owner-operators often skip covering themselves to save premium. That works until you're the one who falls off a ladder, so price both options before you decide.

Watch the statutory employer rule. When a business hires a contractor to do part of its own trade and keeps supervision or control, that contractor's workers, and its subs' workers, can be treated as the hiring business's employees. A written agreement that meets §23-902(D) creates a rebuttable presumption that the sub is independent.

In plain terms, if you use subs and direct their work, their injured helper can become your comp claim. Collect certificates before they start, and read our guide to workers' comp for plumbing subcontractors.

Going uninsured is a bad bet. Under A.R.S. §23-907, an employer without comp loses the Act's protection and can be sued. It can't argue assumption of risk or contributory negligence, and proof of the injury counts as prima facie evidence of its negligence. The worker can also claim through the state's special fund, and the statute adds civil penalties.

Get a quote for your plumbing business →

Heat, high-country freezes and aging Tucson pipe

Extreme heat on your crew

Phoenix ended a 31-day run of highs at or above 110°F on July 31, 2023. July 2023 averaged 102.7°F, the hottest month on record for any U.S. city, according to National Weather Service data.

Attic water heater swaps and crawlspace repipes in that heat put techs at risk of heat illness. That's a workers' comp exposure, and a reason to schedule attic work early in the day.

Example scenario: A first-year apprentice at a Mesa service shop spends an August afternoon in a garage attic, helping move a heater platform. He gets dizzy on the way down and ends up in the ER with heat exhaustion and a sprained ankle. With a comp policy in place, his medical bills and lost wages usually run through the claim. Without one, the shop faces the uninsured-employer rules described above.

Freezes up north

Flagstaff sits at 6,821 feet and averages about 90 inches of snow a year, per NOAA climate normals.

Northern Arizona shops get freeze-burst calls that Valley shops rarely see. A repair that fails in the next cold snap can come back as a completed operations claim, meaning damage that shows up after you've finished the job.

Older housing in Tucson

More than half of Tucson's housing (52%) was built before 1980, and the median year built is 1979.

Service work in older homes means more repairs on aging supply lines and drains, and more chances for water damage after you leave.

Arizona cities where we write plumber coverage

What plumber insurance costs in Arizona

Arizona comp is cheap by national standards. Oregon's 2024 ranking puts the state's all-industry index at $0.70 per $100 of payroll, 46th of 51 and 64% of the median. It isn't a plumbing rate, but it's a favorable starting point.

Bonds are the cost that grows with you. The bond amount climbs with annual volume, and residential licensees add the $200,000 bond or the Recovery Fund assessment. What you pay for a bond is a premium, usually a small share of the bond amount, and your credit affects the rate.

Your price depends on payroll, revenue, claims history, the work you do and the limits you choose. Solar plumbing under a C-77 or R-37 can add roof work, so tell us if your crews go up on roofs, too. In Chandler, the median home was built in 1998 and only 9% of housing predates 1980, so much of the plumbing there is new construction and tract work. Tell us your mix of new work and service, because carriers ask.

For ranges by coverage, see the plumber insurance cost guide. Get a quote for your plumbing business →

Licensed in Arizona

Plumbing Insurance Group is a brand of The Allen Thomas Group, licensed in Arizona (License #3002069160, NPN 7642818). We quote C-37, R-37 and dual-licensed shops across the state, along with the bonds that keep those licenses active.