CSLB Contractor License Lookup

Search the California Contractors State License Board (CSLB) for licensed contractor data. Verify licenses, generate construction leads, and check compliance status.

What data do you get?

For each contractor, the scraper returns:

• License number and status (Active, Inactive, Expired, Suspended, Revoked)
• Business name and DBA
• Business address (city, state, zip)
• Phone number
• License classifications (e.g. B - General Building, C-10 - Electrical, C-36 - Plumbing)
• Issue, expiration, and reissue dates
• Contractor bond (company, number, amount)
• Workers' compensation insurance (carrier, policy, dates, or exempt status)
• Personnel listed on the license
• Complaint/legal action disclosures
• Direct link to the CSLB detail page

How to search

By license number (fastest): Enter one or more license numbers to look up directly. No search form needed.

By business name: Enter a contractor business name (e.g. "Pacific Construction"). Returns matching results from CSLB search.

By personnel name: Enter a last name (and optional first name) to find licenses associated with an individual.

Use cases

• Contractor verification: Confirm a contractor is licensed and in good standing before hiring
• Construction leads: Build targeted lists of licensed contractors by classification
• Compliance checks: Verify bond and workers' comp insurance for vendor qualification
• Due diligence: Check complaint and legal action history
• Market research: Analyze contractor density and specializations in California

Input example

{
    "businessName": "Pacific Construction",
    "maxResults": 25
}

Or look up specific licenses:

{
    "licenseNumbers": ["1000001", "812345"],
    "maxResults": 10
}

Output example

{
    "licenseNumber": "1000001",
    "businessName": "PACIFIC CONSTRUCTION INC",
    "licenseStatus": "Active",
    "city": "LOS ANGELES",
    "state": "CA",
    "zip": "90001",
    "classifications": [
        {"code": "B", "description": "General Building Contractor"}
    ],
    "issueDate": "01/15/2020",
    "expirationDate": "01/31/2026",
    "contractorBond": {
        "company": "SURETY COMPANY OF CALIFORNIA",
        "amount": "$25,000"
    },
    "workersComp": {
        "carrier": "STATE COMPENSATION INSURANCE FUND",
        "policyNumber": "1234567"
    },
    "hasComplaints": false,
    "detailUrl": "https://www.cslb.ca.gov/onlineservices/checklicenseII/LicenseDetail.aspx?LicNum=1000001"
}

Pricing

Pay per result -- $0.005 per contractor record returned. No monthly fees.

Tips

• Use license number lookup when you know specific numbers -- it's fastest and bypasses search.
• Set maxResults to control costs. Default is 25.
• CSLB has ~300,000 active licenses. Business name searches can return many results.
• The CSLB database has occasional maintenance windows (usually weekends). If you get 0 results unexpectedly, try again later.