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How to Check a Contractor's License

A step-by-step guide to verifying contractor licenses in any US state — and what to do if something looks off.

Updated March 2026

Before hiring any contractor for home improvement work, verifying their license is one of the most important steps you can take to protect your investment. An unlicensed contractor may not carry insurance, could do substandard work, and leaves you with limited legal recourse if something goes wrong.

Step 1: Ask for Their License Number

Any legitimate contractor will readily provide their license number. If a contractor hesitates, refuses, or says they "don't need one," that's a major red flag. Most states require contractors to display their license number on business cards, vehicles, and advertising.

Step 2: Verify the License is Active

A license number alone isn't enough — you need to confirm it's currently active and in good standing. Licenses can be expired, suspended, or revoked. Use our free license lookup tool or check directly with your state's licensing board.

Things to check:

  • Status: Must show "Active" — not expired, suspended, or revoked
  • Name match: The business name on the license should match who you're hiring
  • Classifications: The license should cover the type of work you need done
  • Expiration date: Make sure it won't expire during your project

Step 3: Check Their Bond and Insurance

Licensed contractors are typically required to carry a surety bond and workers' compensation insurance. The surety bond protects you financially if the contractor violates regulations, while workers' comp protects you from liability if a worker is injured on your property.

Our license lookup shows bond and insurance status when available. If either is missing or expired, ask the contractor to provide current certificates before signing a contract.

Step 4: Review Complaint History

State licensing boards track complaints filed against contractors. A contractor with multiple complaints or disciplinary actions is a risk — even if their license is currently active.

Common complaint types include:

  • Abandoning a project before completion
  • Poor workmanship or code violations
  • Exceeding the contract price without authorization
  • Working without required permits
  • Using unlicensed subcontractors

Step 5: Verify Their Classification Covers Your Project

Contractor licenses are issued for specific types of work. A general building contractor (Class B in California) can build structures but may not do specialized electrical or plumbing work without the appropriate specialty license. Make sure the contractor's license classifications match the work you need.

Red Flags to Watch For

  • Refuses to provide a license number
  • License is in someone else's name ("I'm working under my partner's license")
  • Asks for full payment upfront (most states limit upfront payments)
  • No written contract or vague scope of work
  • Wants to skip building permits
  • Only accepts cash payments
  • Cannot provide proof of insurance

What if My Contractor Isn't Licensed?

If you discover your contractor is unlicensed, you have options:

  • Before hiring: Simply don't hire them. Find a licensed contractor instead.
  • During a project: Contact your state licensing board immediately. You may be able to recover money through the contractor's bond (if they had one).
  • After a project: File a complaint with your state board. In many states, unlicensed contracting is a criminal offense, and you may be able to sue for damages.

State-by-State Licensing Requirements

Contractor licensing varies significantly by state. Some states (like California and Florida) have strict statewide licensing requirements, while others (like Texas) handle licensing at the city or county level.

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