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Plumbing contractors in Napa County

Workers' comp renewals, lapses, and carriers for plumbing contractors licensed in Napa County, California. Aggregate figures from CSLB and state records, as of 2026-09-02.

64
Active licenses
36
With workers' comp
56% of active
8
Renewing in 90 days
6 within 60
1
Lapsed or suspended
28 exempt

Workers' comp renewals by month, Napa County

Policies on file with the CSLB expiring in each of the next 12 months.

1
Sep
5
Oct
2
Nov
3
Dec
5
Jan
3
Feb
1
Mar
4
Apr
5
May
4
Jun
1
Jul
2
Aug

Top carriers

  1. State Compensation Insurance Fund8
  2. Hartford Casualty Insurance Company4
  3. Travelers Property Casualty Company Of America3
  4. Employers Preferred Insurance Company3
  5. Technology Insurance Company Inc3
  6. Amtrust Insurance Company2
  7. Pacific Compensation Insurance Company2
  8. Wesco Insurance Company2

Top cities

  1. Napa47
  2. American Canyon7
  3. Calistoga6
  4. Angwin2
  5. St Helena1
  6. Yountville1

Trades

  1. Plumbing64
  2. General Building11
  3. General Engineering8
  4. Specialty7
  5. Fire Protection6
  6. Electrical6
  7. HVAC3
  8. Welding2

Size and risk

large3
mid10
small51
high risk0
medium risk0
low risk64

Sources: CSLB license and workers' compensation records, CA Secretary of State, OSHA, FMCSA. Aggregates only; no individual contractor data appears on this page. Size and risk tiers are Birdray estimates.

Frequently asked

How many plumbing contractors are licensed in Napa County?
64 hold an active CSLB license classed as Plumbing in Napa County as of 2026-09-02.
How many carry workers' compensation insurance?
36 have a workers' comp policy on file with the CSLB; 28 filed an exemption and 1 are lapsed or suspended.
When do their policies renew?
6 renew within 60 days and 8 within 90 days. The month-by-month curve on this page shows the next 12 months.
Which carriers write the most plumbing contractors here?
STATE COMPENSATION INSURANCE FUND (8), HARTFORD CASUALTY INSURANCE COMPANY (4), TRAVELERS PROPERTY CASUALTY COMPANY OF AMERICA (3)
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Plumbing contractors in Napa County: workers' comp renewals & carriers | Birdray