Birdray

Plumbing contractors in Oakland, California

Oakland has 136 active plumbing contractors, 64 with workers' comp on file. 14 renew in the next 90 days; 2 have lapsed or suspended coverage. State Compensation Insurance Fund writes the most of them. Renewals peak in January. From CSLB records as of 2026-09-06.

136
Active licences
64
With workers' comp
47% of active
14
Renewing in 90 days
8 within 30
2
Lapsed or suspended
69 exempt
1
New in 90 days
5
Bond suspensions

Plumbing workers' comp renewals by month, Oakland

6
Sep
4
Oct
3
Nov
4
Dec
8
Jan
5
Feb
5
Mar
7
Apr
5
May
4
Jun
4
Jul
4
Aug

Top carriers

  1. State Compensation Insurance Fund13
  2. Employers Preferred Insurance Co.5
  3. Everest Premier Insurance Co.5
  4. Technology Insurance Co. Inc4
  5. Travelers Property Casualty Co. Of America4
  6. Great American Alliance Insurance Co.3
  7. Hartford Casualty Insurance Co.3
  8. American Casualty Co. Of Reading Pa2
  9. Benchmark Insurance Co.2
  10. Continental Casualty Co.2

Other trades in Oakland

  1. General Building808
  2. Electrical181
  3. Painting/Finish141

Licence classes held

CSLB classification codes on these licences

  1. C36123
  2. B39
  3. C4227
  4. A17
  5. C2012
  6. C1612
  7. C1011
  8. C434
  9. HAZ3
  10. C-43
  11. C123
  12. C343

What changed in Oakland this month

Recent changes in state records, one line each, company names withheld on public pages. Birdray users see the company, the contact and the timing.

  • Coverage lapsedPlumbingWorkers' comp coverage lapsed; licence suspended2026-09-06
  • Coverage lapsedGeneral BuildingWorkers' comp coverage lapsed; licence suspended2026-09-06
  • Coverage lapsedRoofingWorkers' comp coverage lapsed; licence suspended2026-09-06
  • Coverage lapsedGeneral BuildingWorkers' comp coverage lapsed; licence suspended2026-09-06
  • Coverage lapsedElectricalWorkers' comp coverage lapsed; licence suspended2026-09-06
  • Coverage lapsedSpecialtyWorkers' comp coverage lapsed; licence suspended2026-09-06
  • Coverage lapsedLandscapingWorkers' comp coverage lapsed; licence suspended2026-09-06
  • Coverage lapsedSpecialtyWorkers' comp coverage lapsed; licence suspended2026-09-06

Frequently asked

How many plumbing contractors are in Oakland?
136 hold an active CSLB licence classed as Plumbing with a Oakland address as of 2026-09-06.
How many carry workers' comp?
64 (47%) have a policy on file; 69 are exempt and 2 lapsed or suspended.
When do plumbing policies in Oakland renew?
8 within 30 days, 12 within 60, 14 within 90. The peak month is January with 8.
Which carriers write plumbing contractors in Oakland?
State Compensation Insurance Fund (13), Employers Preferred Insurance Co. (5), Everest Premier Insurance Co. (5)
Plumbing across Alameda County →X-dates →
Selling to plumbing contractors in Oakland?
Birdray runs signal-timed outbound for one agency per territory: the companies behind these numbers, the person to email, and the renewal date, sent from your inbox. The database is free to search.
How the outbound worksSearch free

Sources: CSLB licence and workers' compensation records, California Secretary of State, OSHA, FMCSA, county permits. Aggregates only; no individual contractor appears on this page. "Active" means a CLEAR licence status. Renewal counts include policies on file with the CSLB expiring in the window. Refreshed weekly; this page as of 2026-09-06. Every field and its source →