Birdray

Plumbing contractors in Contra Costa County

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

507
Active licenses
237
With workers' comp
47% of active
59
Renewing in 90 days
44 within 60
6
Lapsed or suspended
265 exempt

Workers' comp renewals by month, Contra Costa County

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

11
Sep
32
Oct
13
Nov
12
Dec
21
Jan
13
Feb
23
Mar
28
Apr
17
May
26
Jun
13
Jul
13
Aug

Top carriers

  1. State Compensation Insurance Fund34
  2. Technology Insurance Company Inc20
  3. Amtrust Insurance Company17
  4. American Casualty Company Of Reading Pa15
  5. Employers Preferred Insurance Company14
  6. Hartford Casualty Insurance Company14
  7. Security National Insurance Company8
  8. Travelers Property Casualty Company Of America8

Top cities

  1. Concord71
  2. Antioch57
  3. Richmond43
  4. Brentwood38
  5. Walnut Creek35
  6. Pittsburg26
  7. Martinez26
  8. San Ramon22
  9. Oakley19
  10. Danville18

Trades

  1. Plumbing507
  2. General Building119
  3. Electrical58
  4. HVAC53
  5. Specialty38
  6. General Engineering28
  7. Fire Protection15
  8. Sheet Metal14

Size and risk

large36
mid67
small404
high risk10
medium risk4
low risk493

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 Contra Costa County?
507 hold an active CSLB license classed as Plumbing in Contra Costa County as of 2026-09-02.
How many carry workers' compensation insurance?
237 have a workers' comp policy on file with the CSLB; 265 filed an exemption and 6 are lapsed or suspended.
When do their policies renew?
44 renew within 60 days and 59 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 (34), TECHNOLOGY INSURANCE COMPANY INC (20), AMTRUST INSURANCE COMPANY (17)
Turn these numbers into a call list
Birdray shows the specific plumbing contractors in Contra Costa County renewing this quarter, with owner contact, carrier, and x-date.
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