How many C31 traffic control contractors are licensed in California?

California has 495 contractors with a C31 (Traffic Control) license from the Contractors State License Board. 472 (95%) hold active licenses. SiteVetter's C31 license lookup checks each against SAM.gov, OSHA, DOL, and EPA databases.

What does a C31 license cover in California?

A California C31 license covers construction zone traffic control contractors. Any contractor performing traffic control work valued at $500 or more must hold this license. The CSLB issues and regulates all contractor licenses in the state.

What percentage of traffic control contractors have federal violations?

15.4% of California traffic control contractors (76 out of 495) have at least one record in federal databases. These include SAM.gov debarments, DOL wage violations, OSHA safety citations, and EPA environmental violations.

C31 Traffic Control Contractors in California - Page 6 | CSLB License Lookup

C31 Traffic Control Contractor License Lookup

Use this page when you need a California C31 license lookup, a list of licensed traffic control contractors, or a quick screen before assigning traffic control work to a sub. Each row links to a contractor profile with CSLB status, workers' comp, bond, federal records, and permit checks.

California has 495 CSLB C31 license records for traffic control contractors. 95% currently hold active licenses and 15.4% have at least one federal compliance record. SiteVetter checks CSLB status, SAM.gov debarment, DOL wage violations, OSHA safety citations, EPA environmental records, and building permits in seconds.

What to Check for C31 Traffic Control Contractors

Verify the contractor license is active and in good standing
Request proof of insurance and bonding
Get at least 3 written quotes before selecting a contractor
Check federal databases: SAM.gov, OSHA, DOL, and EPA records
Confirm bond: California requires $25,000+ contractor bond (SB 607)

Why Federal Records Matter for Traffic Control Work

For traffic control work, 15.4% of licensed contractors have federal records that a standard CSLB license check would not reveal. SiteVetter's 6-source lookup gives GCs a faster way to compare subs before bid award, onboarding, or renewal review.

C31 Traffic Control Contractors in California - Page 6

CSLB C31 License Scope

C31 Traffic Control Contractor License Records

C31 Traffic Control Contractor License Lookup

What to Check for C31 Traffic Control Contractors

Why Federal Records Matter for Traffic Control Work