C-51 · Welding & fabrication

Structural Steel Contractor

1588 contractors hold a California C-51 Structural Steel Contractor license

What Does a C-51 License Cover?

Fabricates and erects structural steel shapes and plates used as structural members for buildings and structures, including riveting, welding, rigging, and metal roofing systems.

Hiring a Structural Steel Contractor

Structural steel work requires permits and engineering review. Verify the contractor has experience with the specific type of structural system being installed and that all connections will be inspected per the approved plans.

A California contractor license is generally required when a project costs $1,000 or more in combined labor and materials, requires a building permit, or uses additional workers. Small jobs cannot be split from a larger project to qualify for the exemption. Read the CSLB requirements.

Also in Welding & fabrication

C-60: Welding Contractor C-22: Asbestos Abatement Contractor C-21: Building Moving/Demolition Contractor

Related Classifications

C-50: Reinforcing Steel Contractor C-60: Welding Contractor

Licensing Resources

Deposit and payment rules for California contracts
Home improvement contract requirements
How to verify a contractor license

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