California Contractor Insurance

Plumber Workers' Comp Insurance California: Costs & Requirements 2026

Asena Capital Insurance Services — California-licensed insurance brokerage serving contractors statewide. Phone: (858) 925-9555. Email: info@asenainsurance.com.

Quick Answer

California plumbers (C-36 license) pay pricing varies by classification, payroll, operations, claims history, limits, and underwriting for workers' compensation insurance. Class C-36 rates run approximately pricing varies by classification, payroll, operations, claims history, limits, and underwriting per $100 of payroll. A sole proprietor with no employees (ghost policy) pays pricing varies by classification, payroll, operations, claims history, limits, and underwriting/year to comply with SB 216. Call (858) 925-9555 for an coverage review.

Plumber WC Costs by Business Structure

StructureAnnual CostNotes
Sole proprietor (ghost policy)pricing varies by classification, payroll, operations, claims history, limits, and underwritingSB 216 compliant, no employees
1–2 employeespricing varies by classification, payroll, operations, claims history, limits, and underwritingDepends on payroll and claims
3–5 employeespricing varies by classification, payroll, operations, claims history, limits, and underwritingHigher payroll = higher premium

What Affects Your C-36 Plumber Rate

Experience Modification Rate (EMR): Your safety record. 0.80 EMR = 20% discount. 1.20 EMR = 20% increase.

Payroll: Higher payroll = higher premium.

Claims history: Each claim stays on record 3–5 years.

Safety program: Documented training earns 5–15% credit.

How to Lower Your Plumber WC Premium

Improve EMR: Reduce injuries, implement safety training, maintain tools, report incidents promptly.

Increase deductible: Higher deductible = lower premium.

Bundle policies: GL + WC + Auto = multi-policy discount (10–20%).

Shop annually: Rates vary by carrier. We shop 8+ carriers for C-36 plumbers.

Plumber WC quote? Call (858) 925-9555 or Request a coverage review online.

Related: Workers' Compensation Insurance · General Liability Insurance

Call (858) 925-9555 — plumber workers' comp, timely binding.

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