I've spent a lot of years walking into houses on the worst day of somebody's life. As a Kansas City firefighter, I've seen what bad work leaves behind: wiring that was never up to code, a deck that let go under the weight of a family, an addition that failed because it was never really inspected. A lot of that traces back to one thing, somebody hired a contractor without checking who they were hiring. That's a big reason I built PermitDeck.
Here's the good news. Confirming a contractor is licensed is one of the easiest, cheapest things you can do before you sign anything or hand over a deposit. In most states it takes about five minutes and costs nothing. Let me walk you through exactly how to do it, no matter where you live.
Quick Answer: Find your state's contractor licensing board, then search by the contractor's name or license number. Confirm the license is active, that they're bonded and insured, and read the license history for complaints or disciplinary actions. Most states offer a free online lookup, but what's licensed varies by state, so always check your own state's board and pair the result with reviews and proof of current insurance.
Why checking a contractor's license matters
An unlicensed job can cost you far more than it saves. Hiring someone who isn't properly licensed exposes you to real risks that show up long after the truck pulls away:
Your insurance can deny the claim. If unpermitted or unlicensed work causes a fire or a flood, your homeowner's policy may refuse to pay.
The work can fail inspection. Unlicensed work often skips permits, and unpermitted work can force you to tear it out and start over, on your dime.
You may have little recourse. When a licensed contractor takes your money and disappears or botches the job, state boards and bonds give you somewhere to turn. With an unlicensed one, you're often on your own.A few minutes of checking up front protects you from all three.
How to verify a contractor's license, step by step
The process is the same almost everywhere: find the board, search, and confirm the details. Here's the order I'd follow.
1. Find your state's licensing board. Search "[your state] contractor license lookup" and look for the official state agency. The name changes from state to state. In California it's the CSLB (Contractors State License Board). In Florida it's the DBPR (Department of Business and Professional Regulation). In Texas, the TDLR (Texas Department of Licensing and Regulation) handles electricians and several other trades. Your state has its own.
2. Search by name or license number. Ask the contractor for their license number and enter it directly, or search by their business name. If they give you a number, matching it to the name on the record is the cleanest check.
3. Confirm the license is active. A license that's expired, suspended, or revoked is not the same as active. This is the single most important field on the page.
4. Confirm they're bonded and insured. Washington State's Department of Labor & Industries (lni.wa.gov) tells homeowners to verify that a contractor is bonded and carries insurance, not just licensed. The bond and the insurance are what actually pay out if something goes wrong.
5. Read the license history. L&I also recommends checking the history for prior lawsuits or violations. California's CSLB "Check a License" tool goes a step further, it shows the license status and any complaint or disciplinary disclosure right alongside it. If your state surfaces that, read it.If you'd rather not hunt down the right board yourself, you can use our contractor license checker to get pointed in the right direction, and our state-by-state licenses hub breaks down what's required where you live.
What "licensed" means varies by state
There is no single national contractor license, and states don't all license the same work. This trips people up, so it's worth being clear:
Most states have a licensing board with an online license search, but the requirements and what's actually licensed vary a lot.
Some states license at the state level, with a board covering general contractors and trades.
Some only license certain trades, like electricians or plumbers, and leave general work to cities and counties.
A few have no statewide general contractor license at all. Texas, for example, does not license general contractors statewide, though it does license specific trades like electrical through the TDLR.Because of that, "is my contractor licensed?" doesn't have a one-size-fits-all answer. The only reliable move is to check your own state's board for the specific trade you're hiring. Whether it's an electrician, a deck builder, or a tree service, confirm the licensing that applies where you live.
Red flags to watch for
Trust how a contractor reacts when you ask about their license. A good one expects the question. Here's what should make you pause:
They won't give you a license number. A licensed pro can rattle it off or point you to it. Dodging the question is a warning by itself.
They pressure you to skip the permit. "We don't need a permit for this" is often code for "I can't pull one." Permits and inspections exist to protect you, not slow you down.
They want cash only. An insistence on cash, no written contract, and no paper trail makes it far harder to hold anyone accountable later.
The number doesn't match. If the license number they gave you comes back under a different name, expired, or not found, stop and get answers before you go further.Any one of these on its own is worth a conversation. Two or more, and I'd walk away.
A license check isn't the whole story
A license tells you they're legally allowed to do the work and whether they've been disciplined, it does not guarantee quality. I want to be straight with you about that. Plenty of licensed contractors do mediocre work, and a clean record isn't a promise of a great result. So treat the license check as the floor, not the ceiling.
Pair it with:
Reviews from real customers, not just the ones on their own website.
References you actually call, ask about timelines, budget, and cleanup.
Proof of current insurance, ideally a certificate sent straight from their insurer.When you want a shortcut, you can find a verified, licensed pro in our directories, where we've already done a layer of that legwork. But even then, do your own five-minute board check. It's your home. It's worth it.
Frequently Asked Questions
Is it free to check a contractor's license?
Yes. Nearly every state runs a free online license lookup through its licensing board, and using it costs nothing. You just need the contractor's name or license number. If your state's site is hard to navigate, our contractor license checker can help point you to the right official board.
What if my state doesn't license general contractors?
Some states, like Texas, don't license general contractors statewide. In that case, check whether the specific trade you're hiring, electrical, plumbing, or HVAC, is licensed at the state level, and check your city or county for local registration rules. The work may still require permits even where no state GC license exists.
What does "bonded and insured" actually mean?
Bonded means the contractor has posted a surety bond that can pay out if they fail to finish or break the rules. Insured means they carry liability coverage for damage and, ideally, workers' compensation. Washington's L&I advises confirming both, because they're what actually protect you financially when something goes wrong.
Does a license guarantee good work?
No. A license confirms they're legally allowed to do the work and lets you see any disciplinary history, but it doesn't guarantee quality. Always pair the license check with real customer reviews, references you call yourself, and current proof of insurance before you hire.
What should I do if the license is expired or shows discipline?
Ask the contractor directly and get a clear answer. An expired license may just need renewing, or it may signal a bigger problem. Disciplinary actions and complaints deserve a real explanation. If the answers don't add up, keep looking. There are licensed pros in good standing who'll be glad to earn your work.