Verify any California contractor before you take the job
The compliance record for every CSLB-licensed contractor. License status, bond, workers' comp, and lien activity in one place.
- 225K+
- Active licenses
- 58
- CA counties
- 74
- Trade classes
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Every record on Prelien is sourced directly from the California Contractors State License Board.
Featured trades
The CSLB classifications most often pulled by subs and material suppliers. Pick a trade to filter the directory.
- General Building
From foundation to finish — full-service builders.
100,734 licensees - Electrical
Wiring, panels, and anything that conducts.
26,807 licensees - Plumbing
Pipes, fixtures, water in and water out.
17,076 licensees - HVAC
Heating, cooling, and clean indoor air.
11,375 licensees - Painting
Interior, exterior, and everything in between.
15,279 licensees - Landscaping
Lawns, hardscapes, and what grows around them.
11,973 licensees - Roofing
Shingles, flat roofs, and everything overhead.
5,279 licensees - Engineering
Civil works, grading, and large-scale infrastructure.
13,552 licensees
Top counties
Where California's licensed contractors concentrate. Pick a county to see every active CSLB record in the region.
Verify a contractor in three steps
Find any of 225,000+ CSLB licensees by name, license number, county, or trade.
License status, bond on file, workers' comp, and lien activity at a glance.
Public records sourced directly from CSLB, so you can transact informed.