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State files updated Oct 28, 2026
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California contractor licenses

California plumbing contractors

The CSLB file dated Oct 28, 2026 lists 17,646 active California plumbing licenses, 9,636 of them held by businesses. 88 were issued in the last 30 days. 591 expire by Dec 27, 2026.1

Active licenses
17,646
Held by businesses
9,636
Issued, last 30 days
88
Issued, last 12 months
833
Expire by Dec 27
591
Licensed 10+ years
50%
Workers' comp exempt
31%

Which California license classes count as plumbing work?

ClassActive
C36 Plumbing17,646

Where are California's plumbing contractors?

737 cities have at least one. Businesses by city:

Who got a California plumbing license most recently?

Which plumbing contractors have held a license longest?

Whose license is up for renewal next?

Check a California license

Sources

  1. CSLB License Master (cslb.ca.gov, Oct 28, 2026)
  2. Contractors State License Board (CSLB) (cslb.ca.gov)