Home / Licensing / California / D34
D34 Prefabricated Equipment License (California)
California has 1,366 active D34 Prefabricated Equipment holders in the state file as of 2026-10-261, the 33rd-largest of 64 classes with at least 200 holders. 47 of them expire by 2026-12-26.
- Active holders
- 1,366
- 0.6% of active California licenses
- Expiring by 2026-12-26
- 47
- 3.4% of holders
- Median bond on file
- $25,000
- 1,366 bonds
- Workers' comp exempt
- 26.6%
- of 1,366 with WC status
How many D34 contractors are exempt from workers' comp?
363 of 1,366 active D34 holders with a recorded status (26.6%) filed an exemption1, against 48.7% across all California classes.
How do you check a D34 license?
Search by license number or business name on the California license lookup, which reads the same state file.
Other California license classes
- D06 Construction Clean-up1,442
- C43 Sheet Metal1,277
- D52 Window Coverings1,446
- C2 Insulation and Acoustical1,169
- C51 Structural Steel1,518
- C46 Solar1,137
- C38 Refrigeration1,596
- C60 Welding1,076
Sources
- CA CSLB License Master (cslb.ca.gov data portal) (cslb.ca.gov, 2026-10-26)