How to Verify a Contractor’s License
Protect Yourself by Working Only with Qualified Professionals
Hiring a contractor without verifying their license can lead to unsafe work, legal problems, and financial loss. In California, all construction work over $500 must be performed by a state-licensed contractor. Verifying a license is quick and essential.
Why Verifying Matters
• Legal requirement: California law mandates licensing for most construction trades.
• Accountability: Licensed contractors are bonded, insured, and subject to disciplinary action.
• Quality assurance: Licensing ensures the contractor has demonstrated basic trade competency.
• Fraud prevention: Verifying helps prevent scams, unqualified work, and identity abuse.
What to Check
1. License number: Always ask for the contractor’s CSLB license number (California State License Board).
2. License status: Ensure the license is:
• Active
• Properly classified (e.g., C45 for signs, C10 for electrical)
• In good standing with no suspensions or complaints
3. Business name match: Verify the name on the license matches the name on contracts or permits.
4. Workers’ compensation coverage: For contractors with employees, insurance is legally required.
Where to Check
California Contractors State License Board (CSLB):
Click on “Check a License” and enter:
• License number
• Contractor’s name
• Business name
CSLB also provides complaint histories, disciplinary actions, and bonding details.
Red Flags to Watch For
• Contractor refuses to show a license
• They say you should pull the permit in your name (Owner-Builder)
• They offer a price “under the table” to avoid taxes or regulations
• Their license classification does not match the work being performed
• Name or license number appears suspiciously different across documents
Need Help?
SafetyImage.org offers free educational support to help you understand your rights as a property owner. If you’re unsure about a contractor’s credentials or permit situation, feel free to contact us for general guidance.
Email: saftyimage.org@gmail.com
Build Smart. Build Safe. Verify First.