What This API Does

🔧

Maryland Plumber License Verification

Verify master plumber, journeyman, and plumbing contractor licenses regulated by the Maryland Board of Plumbing. Returns license classification, active status, bond and insurance details, and any violations.

Who Uses This API in Maryland

🏗️

General Contractors

Verify plumbing sub-contractor licenses for Maryland projects. Ensure proper credentials before assigning plumbing work.

🏠

Home Service Platforms

Validate plumber credentials in real-time for Maryland service bookings. Build trust by showing verified license status to homeowners.

📊

Insurance Underwriters

Confirm plumbing contractor licensure in Maryland before issuing liability policies. Monitor license expirations across your portfolio.

Maryland Plumber Licensing Authority

Plumber Licenses

Maryland Board of Plumbing

Governs Master Plumber, Journeyman Plumber, Plumbing Contractor licensure in Maryland. Handles initial licensing, renewals, and disciplinary proceedings.

More Maryland License Types

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

API Endpoints

POST /plumber/verify

Verify a plumber license in Maryland

curl -X POST https://license-verify-api-production.up.railway.app/plumber/verify \
  -H "Content-Type: application/json" \
  -H "X-RapidAPI-Key: YOUR_API_KEY" \
  -d '{
    "name": "Robert Wilson",
    "state": "MD",
    "license_type": "Master Plumber"
  }'

POST /batch

Verify multiple plumber 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": "plumber", "name": "Robert Wilson", "state": "MD", "license_type": "Master Plumber" },
      { "type": "plumber", "name": "Alice Brown", "state": "MD", "license_type": "Journeyman Plumber" }
    ]
  }'

Example Response

{
  "status": "found",
  "state": "MD",
  "license": {
    "name": "Robert Wilson",
    "license_number": "MD-PLMB-2024-XXXXX",
    "license_type": "Master Plumber",
    "status": "Active",
    "issue_date": "2020-06-15",
    "expiration_date": "2026-12-31",
    "board": "Maryland Board of Plumbing",
    "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 — Maryland Plumber License Verification

Which Maryland plumber license types can I verify?

Master Plumber, Journeyman Plumber, Apprentice, and Plumbing Contractor licenses regulated by the Maryland Board of Plumbing.

Can I verify plumbing contractor bonds?

Yes — the API returns bond amount and surety details for Maryland plumbing contractors where the state requires bonding.

Can I verify licenses across multiple states?

Yes. The same API works for all 50 states. Use the batch endpoint to verify Maryland plumber 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.

Plumber License Verification API
Maryland