How to Verify a Contractor Is Licensed and Insured in California

Why Contractor Verification Matters — Especially in Altadena Right Now

If your Altadena home burned in the Eaton Fire, the people knocking on your door right now include contractors who were never licensed at all. Unlicensed contractor activity reliably spikes after fires and disasters, and with more than 16,000 homes and structures destroyed in the January 2025 wildfires, Altadena homeowners rebuilding are prime targets.

The stakes are not hypothetical. Five unlicensed contractors were charged for targeting Eaton Fire victims in Altadena, and six more faced felony charges for illegally operating in the Palisades Fire disaster zone, with illegal bids totaling roughly $1.2 million. Contracting without a license in a declared disaster area is a felony, punishable during a wildfire state of emergency by up to three years in prison or a $10,000 fine.

What does that mean for you personally? Los Angeles County District Attorney Nathan J. Hochman put it bluntly: hiring an unlicensed contractor is "never a good deal." Here's what you risk:

• No insurance to claim against. Unlicensed contractors carry no coverage — if something goes wrong mid-build, there is no policy to pursue, as the DA noted when the Eaton Fire charges were announced.
• Injury lawsuits on your property. If a worker is hurt on your lot, you can be sued for the injury when the contractor is unlicensed and uninsured.
• Illegal down payments and fraud. Risks include excessive down payments, unsafe construction, and an inability to sell your home later because the work was never permitted or documented.

Even homeowners who knowingly hire an unlicensed contractor are legally considered victims — but that offers little comfort when the damage is done. CSLB Registrar David Fogt acknowledges the urge to rebuild fast but cautions owners not to rush and hire the first contractor who comes along. It takes seconds to confirm a license on the CSLB's website, and that one check tells you whether the contractor passed exams, verified four years of journey-level experience, carried a license bond, and cleared a criminal background check.

At Altadena Custom Home Builder, our field guide to ground-up custom homes, tear-down rebuilds, and Eaton Fire rebuilding exists for exactly this reason — helping homeowners separate qualified builders from opportunists before money changes hands. Verification matters for any builder you consider; for example, JMB Builders LLC is an Altadena-based licensed general contractor under CSLB #1103479, a number you can confirm yourself through the CSLB lookup (disclosed paid placement).

A free build consultation through our guide is a sensible first step if you're weighing an Eaton Fire rebuild or hillside custom home in Altadena — and whatever builder you choose, run the license check before you sign anything.

ctaText: Get a free build consultation for your Altadena custom home, tear-down, or Eaton Fire rebuild — and bring your builder's license number so we can walk you through what to verify.

socialProofText: Altadena Custom Home Builder is an independent field guide for Altadena rebuilds, hillside lots, and SB 9 projects — including Eaton Fire rebuild work by featured licensed builder JMB Builders LLC (CSLB #1103479, paid placement).

The CSLB License Lookup: Your Authoritative First Step

Before you fall in love with a bid, spend sixty seconds on the state's own verification tool. The Contractors State License Board operates a free online license lookup that confirms whether a contractor — or a Home Improvement Salesperson — is actually licensed, and it discloses complaint history on the same page. CSLB Registrar David Fogt puts it plainly: "It takes only seconds to find a contractor's license information on the CSLB's website to confirm they are licensed."

Prefer to talk to a person? Call the CSLB hotline at (800) 321-CSLB (2752), and ask to physically see the contractor's license as well. A license number on a truck magnet means nothing until the state's records back it up.

A CSLB license isn't a formality. To earn it, a contractor must pass licensing examinations, verify at least four years of journey-level experience, carry a license bond, and pass a criminal background check. Licensed contractors are also obligated to follow insurance and bonding requirements, pull permits, and comply with safety regulations.

The license page tells you more than status. It indicates whether the contractor carries workers' compensation insurance for employees — critical, because a contractor without coverage should have no workers on your jobsite, and Stop Orders can halt all employee labor at sites lacking it. Under 2025 rule changes, contractors must file workers' comp certificates through CSLB's online systems, so digital proof is the new norm.

Any job totaling $1,000 or more in labor and materials requires a CSLB license. Even smaller projects require one if workers or permits are involved — and a contractor disclosing unlicensed status does not make sub-$1,000 work lawful when a license is required.

When you run the lookup, search under both the individual's name and the business name. During the Palisades Fire sting, defendants were not licensed under either name, with no pending application — a pattern investigators now check routinely. If a license shows violation points, note that 15 points within two years can trigger suspension.

• Confirm the license is active and current on renewals
• Check the workers' compensation indicator on the license page
• Review disclosed complaints before signing anything
• Verify both the person and the company names

For Altadena homeowners — especially those weighing an Eaton Fire rebuild — this step matters more than ever. Five unlicensed contractors were charged for targeting Eaton Fire victims, and contracting without a license in a declared disaster area is a felony. Any legitimate builder will hand over a license number willingly; JMB Builders LLC, for example, holds CSLB #1103479, verifiable in seconds through the same lookup. At Altadena Custom Home Builder, we recommend running every candidate — including any builder you're considering for a free build consultation — through CSLB before the first handshake.

Insurance, Down Payments, and the Red Flags That Should End the Conversation

A license tells you a contractor is qualified. It doesn't tell you they're insured — and in post-fire Altadena, that distinction can cost you everything.

The second layer of verification is insurance. The CSLB license page indicates whether a contractor carries workers' compensation insurance, and under 2025 changes, contractors must file workers' comp certificates and insurance documentation through online CSLB systems, so digital proof is the norm (El Dorado County DA; SB 1455 overview). Independently of the CSLB, any contractor you're considering should provide current proof of liability and workers' compensation coverage before you sign anything (insurance industry guidance).

The stakes are real. If an unlicensed, uninsured worker is injured on your property, LA County District Attorney Nathan J. Hochman warns that you "will be sued for any injury of any of these employees that occurs on your property" (NBC Los Angeles). The CSLB can also issue Stop Orders halting all employee labor at job sites lacking coverage.

Down payments are the next legal checkpoint. California caps home improvement down payments at the lesser of 10% of the contract total or $1,000, and subsequent payments cannot exceed the value of work completed. Requesting more is a crime — punishable by up to six months in jail and a $5,000 fine — and in one three-day statewide sweep, investigators cited six contractors for excessive down payment requests alone.

Once insurance and payment rules are covered, run every candidate against the eight dealbreaker red flags. Any one of them should end the conversation:

• No proof of liability or workers' compensation insurance
• A request for full payment upfront — or any down payment above the legal cap
• No written contract, or contract details that are vague or incomplete
• Pressure to decide quickly, scare tactics, or an extremely lowball bid
• Refusing to pull required permits, weak or missing references, or suggesting you file an insurance claim for damage the contractor caused

That last one deserves emphasis: if a contractor damages your property and then suggests you cover it through your own homeowner's policy, that's a transfer of their liability onto you — and a clear signal to walk away.

For Altadena homeowners weighing a ground-up custom build, a tear-down rebuild, or an Eaton Fire rebuild, we recommend applying this same screen to every bid — including the featured builder here, JMB Builders LLC (CSLB #1103479), whose license is verifiable through the CSLB lookup. If a contractor passes, the next step is a written contract and a free build consultation to scope the project properly.

A Pre-Signing Checklist for Altadena Rebuilds and Custom Homes

Before any Eaton Fire rebuild contract leaves your kitchen table, run the verification sequence below. CSLB Registrar David Fogt notes it takes only seconds to confirm a contractor's license online — and those seconds can save you tens of thousands of dollars.

Step one: run the CSLB lookup and check both names. Use the official CSLB license check to confirm status and complaint disclosure. Search under both the individual's name and the business name — Palisades Fire sting defendants were licensed under neither, according to the LA County District Attorney.

Step two: confirm workers' comp and demand paper proof. The license page shows whether workers' compensation coverage is on file, and you should still require current proof of liability coverage before signing. Contractors without workers' comp should not have anyone on your jobsite — CSLB Stop Orders can halt all employee labor at sites lacking coverage.

Step three: compare bids and check references. CSLB guidance is straightforward: get at least three bids and check references before hiring. As Fogt puts it, don't hire the first contractor who comes along, even when the pressure to rebuild quickly is intense.

Step four: get it in writing, and watch the money.

• Insist on a written contract with clear scope, schedule, and payment terms.
• Cap your down payment at the lesser of 10% or $1,000 — California law allows nothing more.
• Never pay cash, and never let payments outpace completed work.
• Walk away from anyone unwilling to pull permits or pressuring you to decide fast.

One fire-zone note matters here: unlicensed contracting in a declared disaster area is a felony under CSLB rules, and five unlicensed contractors were already charged for targeting Eaton Fire victims in Altadena. If something goes wrong with an unlicensed hire, you can be sued for worker injuries on your property — and there's no insurance to go after.

A quick example of what clean verification looks like: JMB Builders LLC, an Altadena-based licensed general contractor building custom homes and Eaton Fire rebuilds, operates under CSLB #1103479 — a number you can confirm in seconds through the lookup, with its work documented on jmb-builders.com. (Disclosure: paid placement.)

Altadena Custom Home Builder maintains this field guide because hillside rebuilds and SB 9 lot splits demand contractors who pass scrutiny, not just sales pitches. Book a free build consultation to talk through your lot, your permits, and the vetted next steps for your rebuild.