C-50 Reinforcing Steel Contractor license in California

Updated November 1, 2026 · Official name from CSLB's classification list

• 258licenses hold C-50
• 95.9%Clear (CA addresses)
• 24.5%workers' comp exempt (all: 49.6%)
• 100%contractor's bond on file
• 13.8 yrsmedian time licensed
• 79.6%businesses, not sole owners

Reinforcing steel contractors fabricate, place and tie the steel bars and steel mesh used to strengthen concrete. CSLB covers rebar of any profile or cross-section.

A C-50 usually works as a subcontractor alongside a concrete crew on foundations, walls and slabs. Homeowners seldom hire one directly. If your concrete contractor's bid lists rebar by others, this is the license to look up.

Typical work under C-50

• Cutting and bending rebar
• Placing and tying rebar for foundations
• Steel mesh for slabs
• Rebar cages for columns and piers
• Reinforcement for retaining and shear walls

Work that needs a different license

• Forming and pouring the concrete: C-8 Concrete
• Structural steel beams and columns: C-51 Structural Steel
• Post-tensioning cables in slabs: C-61/D-6 Concrete Related Services

Tips before hiring

• Ask whether the rebar layout will be inspected before the pour, and who schedules that.
• Confirm that bar size and spacing follow the engineered plans.
• If the rebar sub is hired by your concrete contractor, ask for the sub's license number too.
• Ask whether rebar will sit on chairs or blocks so it stays inside the concrete, not on the dirt.
• Get the price basis in writing: by the ton, by the job or by the square foot.

Where C-50 contractors are

The cities with the most C-50 license holders in CSLB's current file:

1. Fresno: 7
2. Ontario: 7
3. Corona: 6
4. Perris: 6
5. San Diego: 6
6. Long Beach: 5
7. Riverside: 5
8. San Francisco: 5
9. Santa Ana: 5
10. Bakersfield: 4

How to verify a C-50 license

1. Search the business or license number here and confirm C-50 is listed on the profile.
2. Check the same number on CSLB's Instant License Check.
3. Read our full guide to checking a contractor license.

Related license types

• C-8 Concrete Contractor
• C-51 Structural Steel Contractor
• C-61 Limited Specialty

Source: CSLB public data · Updated November 1, 2026 Status can change at any time. Verify on CSLB's Instant License Check.

More license types: ← C-49 Tree and Palm Contractor · C-51 Structural Steel Contractor →