Checking a California Plumbing License
Short answer: plumbing contractors in California are licensed by the Contractors State License Board, usually with a C-36 plumbing classification. Look the license up on the CSLB website and get the job in writing.
Request a plumberWho licenses
The Contractors State License Board (CSLB).
The C-36 license
C-36 is the plumbing contractor classification.
Look it up
Check the license number, status and bond on the CSLB site.
Workers' comp
Check whether the contractor carries workers' compensation.
Permits
Ask who pulls permits.
Written contract
Get scope, price and schedule in writing.
Down payments
California limits down payments on home improvement jobs; ask how payment is handled.
Insurance
Ask for proof of liability insurance.
Warranty
Ask what's covered.
Red flags
Cash-only, no license number or pressure to start immediately.
Local experience
A plumber who works the Salinas Valley regularly knows how local permit offices work, how hard the water is and which neighborhoods have older clay laterals.
Handyman limits
California limits the size of jobs an unlicensed handyman can take on. For anything beyond small repairs, use a licensed contractor.
Next
See emergency plumbing.
More plumbing guides
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