Birdray

CSLB classification · Framing/Carpentry

D-41 Siding and Decking

Installs siding and decks.

407
Active licences
250
With workers' comp
61%
51
Renewing in 90 days
3
Lapsed or suspended
139
Exempt
9
New in 90 days

Coverages a producer should expect

  • ›Workers' comp
  • ›General liability with completed operations

WCIRB classes usually assigned

  • 5645 Carpentry, dwellings

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 Fund74
  2. Pie Insurance Co.23
  3. American Casualty Co. Of Reading Pa15
  4. Everest Premier Insurance Co.14
  5. Insurance Co. Of The West10
  6. Norguard Insurance Co.8
  7. Omaha National Casualty Co.7
  8. Endurance Assurance Corporation5
  9. Technology Insurance Co. Inc5
  10. Carolina Casualty Insurance Co.4

D-41 workers' comp renewals by month, California

15
Sep
18
Oct
9
Nov
15
Dec
31
Jan
15
Feb
20
Mar
19
Apr
19
May
31
Jun
18
Jul
19
Aug
1
Sep

Counties with the most

  1. Sacramento County50
  2. Los Angeles County41
  3. Placer County27
  4. Orange County26
  5. County24
  6. Contra Costa County24
  7. San Diego County23
  8. San Mateo County18
  9. Alameda County14
  10. Santa Clara County13
  11. Fresno County11
  12. Riverside County11

Related classes in Framing/Carpentry

C-5 Framing and Rough Carpentry ContractorC-6 Cabinet, Millwork and Finish Carpentry Contractor

Frequently asked

What does a D-41 licence allow a contractor to do?
Installs siding and decks.
What insurance does a D-41 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 with completed operations.
How many D-41 contractors are there in California?
407 active licences hold the D-41 classification as of 2026-09-06; 250 (61%) have workers' comp on file and 139 are exempt.
When do D-41 workers' comp policies renew?
51 renew within 90 days. January is the peak month.
Which WCIRB class codes apply to D-41 work?
Most often 5645 (Carpentry, dwellings). The WCIRB assigns the class from the actual operations and payroll, so verify per account in the WCIRB classification search.
Selling to D-41 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 →