What This API Does

🔨

California General Contractor License Verification

Verify general contractor, residential, and commercial building licenses managed by the Contractors State License Board (CSLB). Returns license classification, bond amount, insurance details, workers comp status, and complaint history.

Who Uses This API in California

🏗️

Property Management Companies

Verify contractor licenses before approving renovation and maintenance work on California properties. Confirm bonding and insurance are current.

📋

General Contractors & GCs

Validate subcontractor licenses for California projects. Automate compliance checks required by project owners and lenders.

🛡️

Insurance & Surety Companies

Confirm contractor licensure status in California before issuing bonds or policies. Monitor license expirations across your book.

California General Contractor Licensing Authority

General Contractor Licenses

Contractors State License Board (CSLB)

Governs General Building, Residential, Commercial licensure in California. Handles initial licensing, renewals, and disciplinary proceedings.

More California License Types

🏥 Nurse & Contractor → 🏠 Real Estate Agent → 🛡️ Insurance Agent → ⚡ Electrician → 🔧 Plumber → ❄️ HVAC Technician →

API Endpoints

POST /contractor/verify

Verify a general contractor license in California

curl -X POST https://license-verify-api-production.up.railway.app/contractor/verify \
  -H "Content-Type: application/json" \
  -H "X-RapidAPI-Key: YOUR_API_KEY" \
  -d '{
    "name": "John Smith",
    "state": "CA",
    "license_type": "General Building"
  }'

POST /batch

Verify multiple general contractor licenses at once

curl -X POST https://license-verify-api-production.up.railway.app/batch \
  -H "Content-Type: application/json" \
  -H "X-RapidAPI-Key: YOUR_API_KEY" \
  -d '{
    "requests": [
      { "type": "general-contractor", "name": "John Smith", "state": "CA", "license_type": "General Building" },
      { "type": "general-contractor", "name": "Alice Brown", "state": "CA", "license_type": "Residential" }
    ]
  }'

Example Response

{
  "status": "found",
  "state": "CA",
  "license": {
    "name": "John Smith",
    "license_number": "CA-GC-2024-XXXXX",
    "license_type": "General Building",
    "status": "Active",
    "issue_date": "2020-06-15",
    "expiration_date": "2026-12-31",
    "board": "Contractors State License Board (CSLB)",
    "disciplinary_actions": []
  }
}

Pricing

Free

$0

50 requests/day

Pro

$9.99

1,000 requests/mo

Ultra

$29.99

5,000 requests/mo

Mega

$99.99

25,000 requests/mo

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FAQ — California General Contractor License Verification

Which California contractor license types can I verify?

General Building, Residential, Commercial, and specialty trade classifications regulated by the Contractors State License Board (CSLB).

Does the API return bonding and insurance info?

Yes — bond amount, surety company, general liability insurance, and workers comp coverage for California contractors where available.

Can I verify licenses across multiple states?

Yes. The same API works for all 50 states. Use the batch endpoint to verify California general contractor licenses alongside any other state in a single request.

Is there a free tier?

Yes — 50 free requests per day. No credit card required. Sign up on RapidAPI to get your key instantly.

General Contractor License Verification API
California