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Contractor Licensing Requirements in California

California has one of the strictest contractor licensing systems in the US, run by the CSLB. Here's what contractors need to know.

1 min readBy TimeFotos

California requires most contractors to hold a CSLB (Contractors State License Board) license before taking jobs over $500. Operating without a license is a misdemeanor in California.


Key License Classifications

  • B — General Building Contractor — structural work
  • C-10 — Electrical
  • C-20 — HVAC
  • C-27 — Landscaping
  • C-36 — Plumbing
  • C-39 — Roofing
  • (60+ C-classifications total)

Requirements

Experience verification, passing the CSLB written exam, and proof of insurance and bonding. Check the CSLB website for each classification's specific requirements.


Display

License number on all advertising (legally required in California), vehicles, contracts, and estimates.

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