"Yes."
That exchange is worthless unless you verify it yourself. It takes two minutes, it costs nothing, and it is the single highest-value step in hiring any contractor. Here is exactly how to do it, what the results actually mean, and the red flags most homeowners scroll right past.
Step 1: Find Your State's License Board (30 Seconds)
Search Google for "[your state] contractor license board lookup." The official site will always be a .gov domain. If the first result is a paid background-check site, skip it. You want the government source. The main ones:
- California: CSLB at cslb.ca.gov, click "Check a License"
- Florida: DBPR at myfloridalicense.com
- Texas: No state-level general contractor license. Check TDLR separately for electrical, plumbing, and HVAC trades.
- New York: Licensing happens at the city or county level. For NYC, check the Department of Consumer Affairs.
- Arizona: Registrar of Contractors at roc.az.gov
- North Carolina: Licensing Board for General Contractors at nclbgc.org
Cannot find a lookup tool? Call the board directly. They answer these questions all day, and a five-minute phone call beats a $20,000 mistake.
Step 2: Search by License Number, Then by Name (30 Seconds)
Enter the license number from their business card, quote, or website. No license number provided? That is already a yellow flag. Search by business name instead, but be careful: similar business names are extremely common, so confirm the address and owner name match the contractor standing in your kitchen.
Red flag: a contractor who gets evasive when you ask for their license number. Legitimate contractors print it on everything they own. There is no innocent reason to hide it.
Step 3: Read the Results Like an Investigator (60 Seconds)
Do not just glance at the page and move on. Check these five fields:
- Status: Must read "Active" or "Current." Anything else, "Expired," "Suspended," "Inactive," "Revoked," means stop. Do not hire.
- Classification: The license must cover your specific work. A painting license does not authorize electrical work. Classifications vary by state (California uses codes like "B" for general building, "C-10" for electrical, "C-36" for plumbing), so confirm the code matches your project.
- Issue date: A recently issued license is not disqualifying on its own, but ten-plus years of clean history is genuinely reassuring. Brand-new license plus rock-bottom prices is a combination worth questioning.
- Disciplinary actions: Read every entry. One resolved complaint from six years ago is very different from three suspensions in two years. Look for patterns, not just presence.
- Bond and insurance on file: Most boards show whether the required surety bond and workers' compensation coverage are current. "Bond on file: expired" is a stop sign.
Step 4: Verify Insurance Independently (The Step Everyone Skips)
Here is what the board lookup does not tell you: the insurance shown as "filed" might have lapsed last month. Boards are not real-time. For actual protection, do this:
- Ask the contractor for a current Certificate of Insurance (COI). This is standard. Any hesitation is a red flag.
- Call the insurer directly, using the phone number from the insurer's own website, not the number the contractor gives you.
- Confirm general liability (look for $1M or more) and workers' comp are active and will cover your project dates.
- Ask to be listed as the "certificate holder." This means the insurer notifies you if the policy gets cancelled mid-project.
This phone call takes ten minutes. It is the difference between being protected and thinking you are protected.
Special Cases That Trip People Up
Out-of-state contractors after storms
After major hail or wind events, out-of-state crews flood in. Most states require these "foreign" contractors to register locally before working. Always verify with your state's board, not theirs. And be extra cautious: this is prime storm-chaser scam territory.
Subcontractors doing the actual work
Ask point-blank: "Who will physically be doing the electrical and plumbing?" If your general contractor subs out licensed trades, those subs need their own licenses. A GC's license does not magically cover an unlicensed electrician they hired off a job board.
Handymen and the exemption trap
Most states exempt minor work (typically $500 to $1,000 depending on the state) from licensing requirements. But the exemption is narrow and specific. It never covers electrical, plumbing, HVAC, or structural work, regardless of how small the job is. "It is just a small electrical job" is not a legal category.
Make It a Habit, Not a Chore
Bookmark your state's lookup page right now. Check every contractor, every time, even the one your best friend swears by. Two minutes of verification is the cheapest insurance policy in home improvement. Then browse verified contractors knowing you can confirm every credential yourself.