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ASB Asbestos Certification License (California)

California has 773 active ASB Asbestos Certification holders in the state file as of 2026-10-29¹, the 45th-largest of 64 classes with at least 200 holders. 24 of them expire by 2026-12-28.

Active holders: 773; 0.3% of active California licenses
Expiring by 2026-12-28: 24; 3.1% of holders
Median bond on file: $25,000; 773 bonds
Workers' comp exempt: 27.0%; of 773 with WC status

How many ASB contractors are exempt from workers' comp?

209 of 773 active ASB holders with a recorded status (27.0%) filed an exemption¹, against 48.7% across all California classes.

How do you check an ASB license?

Search by license number or business name on the California license lookup, which reads the same state file.

Other California license classes

D24 Metal Products809
C57 Well Drilling712
D63 Construction Clean-up849
C45 Sign856
C4 Boiler, Hot Water Heating and Steam Fitting693
D64 Non-specialized654
C42 Sanitation System962
C49 Tree and Palm631

All 64 classes

Sources

CA CSLB License Master (cslb.ca.gov data portal) (cslb.ca.gov, 2026-10-29)