California Structural Steel (C-51) Contractor License

The California Structural Steel (C-51) contractor license allows you to fabricate and erect structural steel shapes and plates, of any profile, perimeter or cross-section, that are or may be used as structural members for buildings and structures, including the riveting, welding, rigging and metal roofing systems necessary to perform this work.

How to get the Structural Steel (C-51) contractor's license in California?

  1. Determine Eligibility: Each license requires a qualifier who directly supervises and controls the construction operations conducted under the license. Must be at least 18 years old and have four years minimum journeyperson, foreperson, supervising employee, or contractor work experience, in the last 10 years, in the Structural Steel (C-51) trade.
  2. Verifying Work Experience: After meeting the basic eligibility requirements, the qualifier could be randomly selected to provide documentation that they meet the minimum work experience requirements. Having this documentation ready beforehand can make this process easier if your application is selected for review. The experience listed on the application must be verifiable, and people with firsthand knowledge of that experience must certify the accuracy of the information provided to CSLB on the Certification of Work Experience form.
  3. Complete Application: Must fill out the Original Contractor, Additional Classification, or Replacing the Qualifying Individual application form.
  4. Submit Application and Required Fees: For the current list of fees visit the California CSLB Fees page .
  5. Fingerprint Requirement after CSLB Review of Application: For information on fingerprinting, visit the CSLB Fingerprinting Requirement page.
  6. Schedule the Exams: Once the application is submitted the CSLB will send you a 'Notice to Appear for Examination." Upon receipt, the business exam and a Structural Steel (C-51) exams must be scheduled and passed.
  7. Contractor Bond: All applicants must submit to CSLB a contractor bond or cash deposit payable to CSLB in the amount of $15,000. CSLB does not issue bonds.

The CSLB will either issue your license or contact you if they need further information.

California Structural Steel (C-51) Contractor License Exam Prep Courses

California Structural Steel (C-51) Contractor License Exam

Below are the specifications (test type, academic content, etc.) for each exam needed to get the Structural Steel (C-51) contractor's license in California.

California Structural Steel (C-51) Exam

  • Testing Method: Computer-based testing; closed book
  • Testing Company: CSLB
  • Types of Questions: Multiple choice
  • Subjects Involved:
    • Planning and Estimating (20%)
      • Reviewing plans and specifications
      • Conducting site visits
      • Coordinating with other trades
      • Estimating equipment and material
    • Job Preparation (15%)
      • Developing drawings
      • Storing material
      • Determining placement of material
    • Shop Fabrication (20%)
      • Processing material
      • Creating holes and slots in material
      • Cleaning and priming members
      • Loading and transporting material
    • Field Erection (20%)
      • Erecting and securing material
      • Installing beams and trusses
      • Installing high strength bolts
      • Finishing joints and connections
    • Safety (25%)
      • Working in elevated areas
      • Hoisting and rigging
      • Correcting safety hazards
      • Operating lift equipment
      • Using personal protective equipment (PPE)
  • CSLB Structural Steel (C-51) Study Guide

California Law and Business Exam

  • Testing Method: Computer-based testing; closed book
  • Testing Company: CSLB
  • Types of Questions: Multiple choice
  • Subjects Involved:
    • Business Organization (10%)
      • Company organization
      • Project organization
    • Business Finances (15%)
      • Cash management
      • Budget and planning
      • Taxes
      • Financial reporting
    • Employment Requirements (12%)
      • Employment regulations
      • Evaluation and record-keeping
      • Payroll
    • Bonds, Insurance, and Liens (10%)
      • Bonds
      • Workers’ compensation insurance
      • Liens and other remedies
      • Other insurance
    • Contract Requirements and Execution (23%)
      • Bidding
      • Cost control
      • Contracts
      • Payments
    • Licensing Requirements (8%)
      • Business license
      • Contractor’s license
      • Activity regulation
    • Safety (15%)
      • Training and reporting requirements
      • General safety
      • Hazardous/unknown materials
    • Public Works (7%)
      • Prevailing wage requirements
      • Bonding requirements
      • Insurance requirements
  • CSLB Law and Business Study Guide

California Structural Steel (C-51) Contractor Book Set

The book set includes all source references for the California Structural Steel (C-51) Contractor exams. You can use these books to study for the exams but you are not allowed to bring these books in with you to the testing center. These tests will be closed-book. Orders placed before 2 PM are shipped the same day via UPS and a tracking number is emailed before 3 PM.

  • CALIFORNIA STRUCTURAL STEEL (C-51) - BOOK SET WITHOUT TABS INCLUDES ALL BOOKS FOR TRADE AND BUSINESS EXAMS

    Sales price: $2,549.90
  • CALIFORNIA STRUCTURAL STEEL (C-51) - BOOK SET WITH TABS INCLUDES ALL BOOKS FOR TRADE AND BUSINESS EXAMS

    Sales price: $2,649.90

California Structural Steel (C-51) Contractor Exam Books

California Law and Business Exam Books