How to Verify a Contractor's License Before You Sign (NYC and California, 2026)
The contractor showed up on time, walked the job, and sent over a clean looking quote. He mentioned he is fully licensed, and you have no reason to doubt him. You are about to hand over a deposit. Here is the uncomfortable truth: almost nobody actually checks. They take the word, sign the contract, and only find out the license was inactive, suspended, or never existed when something goes wrong and they go looking for recourse that is no longer there.
Checking takes about two minutes and it is free. This guide shows you exactly how to verify a contractor's license in New York City and in California, what each line on the results page means, and the red flags that should make you walk away before you pay anyone a dollar.
📌 Key Takeaways
- In New York City, any contractor doing home improvement work over $200 in labor and materials must hold a DCWP Home Improvement Contractor license. Look it up free at nyc.gov/dcwp.
- In California, any contractor doing work valued at $1,000 or more must hold an active CSLB license as of the 2026 threshold. Look it up free at cslb.ca.gov.
- The only license status you want to see is Active. Inactive, Suspended, Expired, or Revoked means stop.
- In California, confirm the contractor carries the required $25,000 surety bond and that the license classification matches your job.
- If the contractor has employees, confirm workers compensation insurance is current, or an injury on your property can become your financial problem.
Why Checking a License Matters Before You Sign
A license is not paperwork for its own sake. It is your protection, and skipping the check quietly removes three things you will want if the job goes sideways.
It removes your legal recourse. In California, hiring an unlicensed contractor can leave you with little or no path to recover money for defective work. The license is the door to that recourse, and an inactive or fake one means the door is closed.
It can void your insurance and stall your permits. Local building departments reject permit applications tied to suspended licenses, and using an unlicensed contractor can complicate or void coverage if something is damaged. A project that cannot pass inspection is a project that cannot legally finish.
It tells you who you are actually dealing with. The same lookup that confirms the license usually shows complaint history and disciplinary actions. Two minutes here can surface a pattern that three glowing reviews on a website would never tell you.
How to Verify a Contractor License in New York City
New York has no statewide general contractor license, which confuses a lot of people. In New York City, home improvement work is handled by the Department of Consumer and Worker Protection, known as DCWP. Construction permits are handled separately by the Department of Buildings. For a kitchen, bathroom, flooring, or general renovation, the license you care about is the DCWP Home Improvement Contractor license, or HIC.
Here is how to check it.
- Go to nyc.gov/dcwp and open the Business License Lookup tool.
- Search by the business name or by the HIC license number. That number should already appear on the contractor's contract and advertising, because the city requires it there.
- Read the result. You are looking for a status of Active, the expiration date, and that the licensee name and address match the person you are dealing with.
If the contractor cannot give you an HIC number, or the number does not return an active result, that is your answer. Any home improvement work over $200 in the city legally requires this license, and a contractor who does not have one is not someone you want holding your deposit.
How to Verify a Contractor License in California
California makes this easier than New York because it runs one statewide system through the Contractors State License Board, known as CSLB. Every licensed contractor in the state has a license number you can check in under two minutes.
- Go to cslb.ca.gov and open the Check a License tool.
- Search by license number, which is the fastest, or by business name or personal name.
- Read the result against the checklist in the next section.
You can also confirm details by phone at 1-800-321-CSLB. As of the 2026 threshold, any work valued at $1,000 or more requires an active CSLB license, so this check applies to essentially every real renovation.
What to Look For on the Results Page
Pulling up the record is only half the job. Knowing what the record should say is the other half. Here is what matters and how it differs between the two cities.
| What to Check | New York City (DCWP) | California (CSLB) |
|---|---|---|
| License status | Must read Active | Must read Active |
| Expiration | Current, not lapsed | Current, not lapsed |
| Bond | Not a DCWP field | Confirm the $25,000 contractor bond is on file |
| Classification | Confirm it covers home improvement | Must match your job: B for general building, C-10 electrical, C-36 plumbing, C-20 HVAC, C-39 roofing |
| Workers compensation | Verify separately if they have employees | Shown on the record, must be current if they have employees |
| Complaints and discipline | Check the DCWP complaint record | Check disciplinary actions on the record |
The classification line is the one homeowners miss most. A license can be perfectly active and still be the wrong license for your job. A contractor with only an electrical classification is not licensed to run your full bathroom remodel. The category on the license has to cover what you are actually hiring them to do.
⚠️ Pro-Tip: Match the License to a Real Permit
Want a stronger check than the lookup alone? Pull a recent permit the contractor filed and confirm the name on the permit matches the name on the license you just verified. Some operators work under a borrowed or related license that does not actually belong to the person standing in your kitchen. The permit record is where that mismatch shows up.
⚠️ Pro-Tip: An Inactive License Is Not a Small Thing
People sometimes see Inactive and assume it just means the contractor is between renewals and it will sort itself out. Treat it as a hard stop. An inactive or suspended license means the contractor cannot legally bid or perform the work right now, and in California a bond lapse alone triggers automatic suspension. If the status is anything other than Active, you do not have a paperwork delay, you have a contractor who cannot legally do your job today.
Red Flags That Should Stop You
A few findings should end the conversation, not start a negotiation. The contractor cannot produce a license number. The number returns Inactive, Suspended, Expired, or Revoked. The classification does not cover your scope. In California, the $25,000 bond is not on file. The name on the license does not match the person or business you are dealing with. There is a pattern of unresolved complaints or disciplinary actions. Any one of these is reason enough to keep your deposit in your pocket.
A clean, active license does not guarantee a fair price, which is a separate question entirely. But an active license is the floor. No contractor should ever clear the bar of getting your money without first clearing this one.
About the Author
Richard Golding is a licensed General Contractor with more than 22 years of experience building and renovating in New York City and Los Angeles. He holds DCWP Home Improvement Contractor license HIC #2135146 (NYC Build Remodel) in New York and CSLB license B #1130438 in California. He is the founder of CostCheckGPT, an independent contractor bid review service that confirms a contractor's license status as part of every Bid Defense Memo and delivers it within 12 hours so you know exactly what to question before you sign.
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Tags
verify contractor license, check contractor license status, CSLB license lookup, DCWP license check, contractor license verification, is my contractor licensed, NYC home improvement contractor license
Sources
NYC Department of Consumer and Worker Protection - https://www.nyc.gov/site/dca/consumers/check-license.page
California Contractors State License Board - https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx
California Contractors State License Board licensing requirements - https://www.cslb.ca.gov/Consumers/Hire_A_Contractor/What_Kind_Of_Contractor_Do_You_Need.aspx