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D42 Non-Electrical Sign Installation License (California)

California has 422 active D42 Non-Electrical Sign Installation holders in the state file as of 2026-10-29¹, the 56th-largest of 64 classes with at least 200 holders. 9 of them expire by 2026-12-28.

Active holders: 422; 0.2% of active California licenses
Expiring by 2026-12-28: 9; 2.1% of holders
Median bond on file: $25,000; 421 bonds
Workers' comp exempt: 26.5%; of 422 with WC status

How many D42 contractors are exempt from workers' comp?

112 of 422 active D42 holders with a recorded status (26.5%) filed an exemption¹, against 48.7% across all California classes.

How do you check a D42 license?

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

Other California license classes

D38 Sand and Water Blasting424
D41 Siding and Decking414
C47 General Manufactured Housing451
C28 Lock and Security Equipment364
C31 Construction Zone Traffic Control472
C22 Asbestos Abatement316
C32 Parking and Highway Improvement500
C55 Water Conditioning301

All 64 classes

Sources

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