Birdray

Plumbing contractors in San Mateo County

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

442
Active licenses
233
With workers' comp
53% of active
55
Renewing in 90 days
41 within 60
9
Lapsed or suspended
202 exempt

Workers' comp renewals by month, San Mateo County

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

12
Sep
26
Oct
13
Nov
24
Dec
32
Jan
7
Feb
19
Mar
22
Apr
19
May
16
Jun
20
Jul
13
Aug

Top carriers

  1. State Compensation Insurance Fund53
  2. Technology Insurance Company Inc32
  3. Employers Preferred Insurance Company15
  4. Security National Insurance Company14
  5. Hartford Casualty Insurance Company10
  6. National Casualty Company7
  7. Everest Premier Insurance Company7
  8. American Casualty Company Of Reading Pa7

Top cities

  1. Daly City58
  2. San Mateo51
  3. Redwood City49
  4. South San Francisco49
  5. San Bruno42
  6. Burlingame29
  7. Pacifica28
  8. Millbrae25
  9. San Carlos22
  10. Foster City13

Trades

  1. Plumbing442
  2. General Building139
  3. Electrical73
  4. HVAC41
  5. Specialty40
  6. General Engineering39
  7. Fire Protection33
  8. Painting/Finish8

Size and risk

large30
mid86
small326
high risk12
medium risk4
low risk426

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 San Mateo County?
442 hold an active CSLB license classed as Plumbing in San Mateo County as of 2026-09-02.
How many carry workers' compensation insurance?
233 have a workers' comp policy on file with the CSLB; 202 filed an exemption and 9 are lapsed or suspended.
When do their policies renew?
41 renew within 60 days and 55 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 (53), TECHNOLOGY INSURANCE COMPANY INC (32), EMPLOYERS PREFERRED INSURANCE COMPANY (15)
Turn these numbers into a call list
Birdray shows the specific plumbing contractors in San Mateo County renewing this quarter, with owner contact, carrier, and x-date.
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