1. Active License Standing
Instant confirmation of active, expired, suspended, or inactive standing, including issue dates, expiration cycles, and official business entity structure (LLC, Corporation, or Sole Proprietor).
State of California Department of Consumer Affairs
California CSLB License Lookup & Compliance Checker
Verify active California contractor license standing, trade classifications, statutory Workers’ Comp coverage, and $25,000 surety bonds in real time directly from official state records.
Sample Lookups:
Search California Contractor Standing
Enter any California State License Board license number above to perform a live audit of active status, workers' comp policies, and surety bonds.
Regulatory Audit Engine
Critical Compliance Metrics Checked in Real Time
SubEngineX audits live California State License Board (CSLB) registry data to protect general contractors, trade subcontractors, and property owners from unlicensed liability and uninsured risk.
2. $25,000 Surety Bond
Validation of the state-mandated $25,000 Contractor's Surety Bond required under California Business & Professions Code §7071.6, confirming authorized surety underwriters and active policy numbers.
3. Workers' Comp Coverage
Real-time verification of statutory Workers’ Compensation coverage per CA Labor Code §3700. Cross-references active insurance carrier, policy expiration date, or official statutory exemption certificates.
4. Trade Classifications
Audit of primary and secondary trade classifications (C-33 Painting, Class B Building, C-10 Electrical, C-36 Plumbing) to verify subcontractors are legally licensed for their contracted trade scope.
Classification Reference
Major California Trade Classifications
Explore primary California contractor classifications recognized by municipal procurement offices, public works agencies, and the CSLB. Click any trade to run an instant verification lookup.
CLASS C-33
Painting & Decorating
Surface preparation, commercial coating, elastomeric painting, industrial waterproofing, and drywall taping finishes.
CLASS B
General Building Contractor
Commercial, residential, and institutional structural builds requiring at least two unrelated building trades or crafts.
CLASS C-10
Electrical Contractor
High and low-voltage electrical systems, conduits, control panels, solar photovoltaic systems, and building lighting.
CLASS C-36
Plumbing Contractor
Potable water supply piping, sanitary drainage, vent piping, fuel gas lines, backflow preventers, and hydronic systems.
CLASS C-20
HVAC (Heating & Ventilating)
Warm-air heating systems, air conditioning, commercial refrigeration, exhaust ventilation, and sheet metal ductwork.
CLASS A
General Engineering
Heavy infrastructure, civil earthwork, grading, municipal water utilities, bridges, highways, and public works paving.
California Labor Code § 2750.5 Protection
California law presumes an unlicensed or improperly bonded worker is a statutory employee of the hiring prime contractor. Verifying active CSLB status protects general contractors against joint payroll tax, wage penalty, and uninsured injury liabilities.
Eliminate WCIRB Audit Reclassifications
Annual Workers’ Compensation Insurance Rating Bureau (WCIRB) audits reclassify 1099 subcontractor payments as payroll if valid certificates and active state licenses cannot be proven, causing tens of thousands of dollars in surprise premium adjustments.
San Francisco Chapter 14B Preference
Certified San Francisco Micro-LBE and Small-LBE contractors bidding on CCSF public projects receive up to a 10% bid discount. Maintaining an active CSLB standing and compliant bonding is required to preserve municipal preference standing.
Automated Digital Twin Integration
SubEngineX links your verified CSLB license directly to your company’s operational twin. Daily shifts, bilingual safety briefings, and geofenced foremen logs synchronize automatically with your verified credentials.
Frequently Asked Questions
California Contractor Verification FAQ
Answers to common legal, insurance, and licensing questions for California commercial trade contractors, general contractors, and project developers.
How do I verify if a California contractor's license is active and in good standing?
Enter the contractor's 6 to 8-digit California State License Board (CSLB) license number into the SubEngineX verification checker above. The system queries official California state records in real time to confirm whether the status is Active/Valid, Expired, Suspended, or Inactive, and displays license issue dates, expiration cycles, and registered business entities.
What is the mandatory $25,000 California contractor surety bond requirement?
Under California Business & Professions Code §7071.6, all licensed contractors in California are required to maintain an active $25,000 contractor’s surety bond (or approved cash deposit) on file with the CSLB. This bond protects consumers, project owners, and crew members from financial damages caused by willful violations of the California Contractors License Law.
How do I verify Workers' Compensation insurance coverage for a California subcontractor?
California Labor Code §3700 requires all contractors with employees to maintain Workers' Compensation coverage. The SubEngineX CSLB checker identifies the active insurance carrier, policy number, and policy expiration date on file with the state. If a contractor has no employees, the checker flags whether an official statutory exemption certificate is registered with the CSLB.
What do CSLB trade classifications like C-33, B, and C-10 signify?
CSLB trade classifications define the authorized trade scope a contractor may legally perform in California. For example, Class C-33 designates Painting & Decorating Contractors, Class B designates General Building Contractors, Class C-10 designates Electrical Contractors, and Class C-36 designates Plumbing Contractors. Contracting for work outside an authorized classification constitutes a misdemeanor in California.
How does claiming a CSLB license in SubEngineX help trade subcontractors?
Claiming your verified CSLB license standing automatically imports your company credentials, trade classifications, and active policy data directly into your SubEngineX Digital Twin workspace. This eliminates repetitive pre-qualification paperwork on municipal bids (like CCSF, Caltrans, and SFDPW), defends against annual workers' comp audit penalties, and speeds up subcontractor onboarding.
Ready to Connect Your Verified Credentials to Live Operations?
Claim your California company profile, match with active public bid opportunities with Micro-LBE bid discounts, and spin up your operational digital twin in minutes.