Birdray

CSLB classification · Concrete/Masonry

D-06 Concrete-Related Services

Concrete cutting, coring, sealing and related services.

1,434
Active licences
912
With workers' comp
64%
193
Renewing in 90 days
35
Lapsed or suspended
468
Exempt
13
New in 90 days

Coverages a producer should expect

  • ›Workers' comp
  • ›General liability
  • ›Equipment

WCIRB classes usually assigned

  • 5201 Concrete work NOC

Governing class depends on actual operations and payroll. Verify with the WCIRB classification search before quoting.

Carriers writing this class

Policies on file, statewide

  1. State Compensation Insurance Fund212
  2. Insurance Co. Of The West78
  3. Pie Insurance Co.67
  4. Omaha National Casualty Co.47
  5. Wesco Insurance Co.24
  6. Markel Insurance Co.24
  7. Norguard Insurance Co.23
  8. Security National Insurance Co.19
  9. Hartford Casualty Insurance Co.19
  10. Everest Premier Insurance Co.18

D-06 workers' comp renewals by month, California

39
Sep
94
Oct
48
Nov
50
Dec
98
Jan
60
Feb
83
Mar
78
Apr
82
May
85
Jun
78
Jul
52
Aug
1
Sep

Counties with the most

  1. Los Angeles County238
  2. Orange County180
  3. Riverside County160
  4. San Diego County124
  5. Contra Costa County92
  6. San Bernardino County82
  7. Santa Clara County80
  8. County60
  9. Sacramento County57
  10. Ventura County45
  11. Kern County28
  12. Alameda County25

Related classes in Concrete/Masonry

C-8 Concrete ContractorC-29 Masonry ContractorC-50 Reinforcing Steel ContractorC-51 Structural Steel Contractor

Frequently asked

What does a D-06 licence allow a contractor to do?
Concrete cutting, coring, sealing and related services.
What insurance does a D-06 contractor need?
Workers' compensation is required by law once they have employees; the CSLB suspends a licence without it. Beyond that, producers usually place: Workers' comp; General liability; Equipment.
How many D-06 contractors are there in California?
1,434 active licences hold the D-06 classification as of 2026-09-06; 912 (64%) have workers' comp on file and 468 are exempt.
When do D-06 workers' comp policies renew?
193 renew within 90 days. January is the peak month.
Which WCIRB class codes apply to D-06 work?
Most often 5201 (Concrete work NOC). The WCIRB assigns the class from the actual operations and payroll, so verify per account in the WCIRB classification search.
Selling to D-06 contractors in California?
Birdray runs signal-timed outbound for one agency per territory: the companies behind these numbers, the person to email, and the renewal date, sent from your inbox. The database is free to search.
How the outbound worksSearch free

Sources: CSLB licence and workers' compensation records, California Secretary of State, OSHA, FMCSA, county permits. Aggregates only; no individual contractor appears on this page. "Active" means a CLEAR licence status. Renewal counts include policies on file with the CSLB expiring in the window. Refreshed weekly; this page as of 2026-09-06. Every field and its source →

D-06 Concrete-Related Services: Insurance and WCIRB Classes | Birdray