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Search 8,049 active licenses by business name or license number. Each result opens the official state record in a new tab.

How to check a license in California

  1. Open CSLB's Check a Contractor License tool.[1]
  2. Enter the license number, the business name, or a name tied to the license. Numbers here run digits only, never letters.[1]
  3. Read the license status and disciplinary history, plus the workers' compensation and insurance information on file.[2]
  4. When the contractor arrives to bid the job, ask to see their pocket license and a photo ID, and confirm the person matches it.[2]

CSLB Check a Contractor License

Warning signs

  • A bid that lands far below every other one you collected.[2]
  • No current business address on file, only a cell phone number.[2]
  • A blank or partially blank contract or change order.[3]
  • A deposit request above the legal cap without a bond to justify it.[2],[3]

Rules that protect you

  • Contractor bond of 25,000 dollars, covering every job during the life of that bond, not per project.[2]
  • Down payment capped at 10 percent of the contract price or 1,000 dollars, whichever is smaller, with a single exception for a contractor carrying a Blanket Performance and Payment Bond.[2],[3]
  • Written contract required once a job passes 500 dollars combined for labor and materials; changes must also be in writing.[3]
  • Three-day written right to cancel a signed home improvement contract.[3]

How to check a license in Florida

  1. Open the DBPR licensing portal's license search.[4]
  2. The portal takes a name, a license number, a city or county, or a license type as your search term.[4]
  3. Check whether the license is Certified, which can work statewide, or Registered, which is limited to its local jurisdiction.[5]

DBPR Licensing Portal License Search

Warning signs

  • A contractor who cannot produce a license number at all, given Florida bars an unlicensed contractor from enforcing their own contract or filing a lien.[6]
  • A first payment above 10 percent with no permit filed within the following 30 days.[7]
  • A Registered (not Certified) contractor bidding work outside the jurisdiction they are registered in.[5]

Rules that protect you

  • Workers' compensation plus liability and property damage insurance required before a license is issued or renewed.[8]
  • General and building contractors: 300,000 dollars liability, 50,000 dollars property damage. Other categories: 100,000 dollars and 25,000 dollars.[8]
  • A first payment over 10 percent of the price triggers a 30-day deadline to apply for the permit and a 90-day deadline to start work.[7]
  • Construction Industries Recovery Fund pays only after a bond, insurance or other security is exhausted, capped at 100,000 dollars per Division I claim or 30,000 dollars per Division II claim for recent contracts.[9],[10]

How to check a license in Washington

  1. Open L&I's Verify a Contractor, Tradesperson or Business tool.[11]
  2. Enter a name, a license number, a workers' comp account number, or the business's own UBI number to run the search.[11]
  3. Confirm the registration is active, that the contractor is bonded and insured, and that they keep a safe job site or have corrected past violations.[12]
  4. If the contractor will have employees on your job site, confirm they hold an active workers' comp account too.[13]

Washington L&I's contractor and tradesperson lookup

Warning signs

  • Credentials or references that cannot be verified.[13]
  • A special price that is only good if you sign today.[13]
  • Cash-only payment or a request for a large deposit upfront.[13]
  • No written contract, or a bid that is not complete.[13]
  • Asking you, the homeowner, to pull the building permit yourself.[13]
  • An exceptionally long warranty offer, or a contractor who will only work evenings and weekends.[13]

Rules that protect you

  • Bond of 30,000 dollars for a general contractor or 15,000 dollars for a specialty contractor.[14]
  • Liability insurance of 200,000 dollars public liability and 50,000 dollars property damage, or a 250,000-dollar combined single limit.[14]
  • No statutory deposit cap; pay in phases as work completes and avoid paying in full before the job is done.[13]
  • A Notice to Customer disclosure statement is required on jobs of 1,000 dollars or more at a home of four units or fewer.[15]

Sources

  1. Check a Contractor License or Home Improvement Salesperson (HIS) Registration, Contractors State License Board, accessed 2026-09-30
  2. How do I find the right licensed contractor?, Contractors State License Board, accessed 2026-09-30
  3. What Should I Look for in a Contract and Binding Agreements?, Contractors State License Board, accessed 2026-09-30
  4. Licensing Portal: License Search, Florida Department of Business and Professional Regulation, accessed 2026-09-30
  5. Construction Industry (license types), Florida Department of Business and Professional Regulation, accessed 2026-09-30
  6. Florida Statutes 489.128: Contracts entered into by unlicensed contractors unenforceable, Florida Legislature, accessed 2026-09-30
  7. Florida Statutes 489.126: Moneys received by contractors, Florida Legislature, accessed 2026-09-30
  8. Florida Statutes 489.115: Renewal of certificates and registrations; requirement, Florida Legislature, accessed 2026-09-30
  9. Florida Statutes 489.141: Eligibility for recovery from the fund, Florida Legislature, accessed 2026-09-30
  10. Florida Statutes 489.143: Payment provisions, Florida Legislature, accessed 2026-09-30
  11. Verify a Contractor, Tradesperson or Business, Washington State Department of Labor & Industries, accessed 2026-09-30
  12. Hiring a Contractor, Washington State Department of Labor & Industries, accessed 2026-09-30
  13. Hire Smart Step-by-Step, Washington State Department of Labor & Industries, accessed 2026-09-30
  14. Register as a Contractor, Washington State Department of Labor & Industries, accessed 2026-09-30
  15. RCW 18.27.114: Disclosure statement required, Washington State Legislature, accessed 2026-09-30