California Contractor Licenses - CSLB Register (Bonds + Discipline)

The complete California Contractors State License Board register: 243,786 contractor licenses, refreshed daily from CSLB's official Statewide Public Database Files. Every license carries the full surety-bond triple, workers' comp coverage, license classes and discipline cases.

Low cost

From $0.00005 per record, down to $0.00003 at Gold. Pay only for the records you actually receive - the whole register stays queryable, you are never billed for the scan behind it.

Screen a contractor before you hire

primaryStatus=CLEAR (231,014 licenses, 94.8%) is the healthy value. The other 20 values are suspension codes - the signal that matters:

status	licenses
CLEAR	231,014
Contr Bond Susp	7,953
Work Comp Susp	2,957
Liab Ins Susp	504
Judgement Susp	138
Family Sup Susp	187
15 more codes

Set status to any one, or hasDiscipline=true for the 1,817 licenses carrying an actual discipline case (dbCaseNo / discpCaseRegion).

Search it

• Name - businessName="DOCKERY" (substring over the legal + full + DBA names, case-insensitive).
• Where - city, county, zipCode (prefix).
• Class - classification="B" (General Building), "C10" (Electrical), "C36" (Sheet Metal). Matches a full class token, so "B" does not also return "C10" or "HB".
• Form - businessType: Sole Owner (113,973), Corporation (111,706), Limited Liability (14,074), Partnership, JointVenture.
• Exact id - licenseNumber (a number identifies exactly one license).
• Discipline - hasDiscipline=true.

Example inputs

Suspended contractors in one county - the pre-hire screen.

{ "county": "Los Angeles", "status": "Work Comp Susp", "maxResults": 50 }

One license, in full - every bond, policy and discipline field.

{ "mode": "profile", "licenseNumber": "1000002" }

General Building contractors in Los Angeles - class filter is a full token.

{ "county": "Los Angeles", "classification": "B", "maxResults": 25 }

Counts by license status - mode=aggregate.

{ "mode": "aggregate", "groupBy": "primaryStatus" }

Or roll it up

mode=aggregate returns one count row per group - business type, primary status, county, workers' comp coverage or mailing state. Every group comes back; this mode is not cut off by maxResults.

Los Angeles   49,728
San Diego     21,615
Orange        20,155
Riverside     16,551
...

Example output

One contractor - mode=profile:

{
 "platform": "ca-cslb",
 "licenseNumber": "1000002",
 "businessName": "DOCKERY RANDALL MARK",
 "fullBusinessName": "RANDALL MARK DOCKERY",
 "businessType": "Sole Owner",
 "primaryStatus": "CLEAR",
 "classifications": "C57",
 "city": "LODI",
 "county": "San Joaquin",
 "zipCode": "95242",
 "businessPhone": "(925) 383 0487",
 "issueDate": "2015-01-10",
 "expirationDate": "2027-01-31",
 "workersCompCoverageType": "Exempt",
 "cbSuretyCompany": "PHILADELPHIA INDEMNITY INSURANCE COMPANY",
 "cbNumber": "PB10163403900",
 "cbAmount": "25000",
 "cbEffectiveDate": "2025-09-14",
 "cbCancellationDate": "2026-10-21"
}

Also: the change feed

mode=changes returns the diff between the last two daily snapshots - licenses added, removed, or with any field changed (new bonds, suspensions, address moves). Each row carries changeType (added / removed / updated), and for updated rows the changedFields list and the previous oldValues. This is the daily-tracking surface.

Notes on the data, from the source

• One row = one license. licenseNumber is unique - this is not a per-person register.
• classifications is a list. A contractor can hold several classes ("B, C10"); the classification filter matches a single token inside that list.
• Bond and insurance fields are the deep part. cb* (Contractor Bond), wb* (Working-Water-Well Bond) and db* (Disciplinary Bond) each carry the surety company, bond number, amount and effective/cancel dates; wc* carries the workers' comp company, policy and dates. Coverage varies - a bond is only populated where one is required.
• Discipline is rare and real. 1,817 licenses carry a discipline case; the rest have blank discipline fields.