Vetting Standard
What “licensed and insured” actually means in California
Homeowner guide · 7 min read · Educational only, general information
Almost every roofing ad in Los Angeles promises the same thing: licensed and insured. What makes those two words unusual is that, unlike most marketing claims, both are things you can independently check in about two minutes, on a state website, for free. Hardly anyone does. This guide covers what California actually requires, how to confirm a roofer is licensed and insured yourself, and who ends up paying when one of them turns out to be missing.
The License
Four things a California roofing license tells you
Licensing rules are set state by state. These are the specifics that apply to a roof in Los Angeles.
It is required above $500
Anyone performing home improvement work valued at $500 or more in California is required to hold a license from the Contractors State License Board. A roof replacement clears that threshold by a wide margin.
Roofing has its own classification
C-39 is the roofing classification. A contractor can hold a valid general building license and still not be classified to reroof your home, so the classification matters as much as the number.
The number has to be printed on the paperwork
California requires the license number to appear on business cards, bids, and contracts. If you are holding an estimate with no license number anywhere on it, that absence is itself the finding.
It connects to a bond and a complaint record
A license is not just a credential. It ties the contractor to a registered business entity, a surety bond, and a public complaint history, which is what gives you somewhere to go if the work goes badly.
Verification
How to check a license yourself
You do not need to take anyone's word for this part.
Get the number
It should already be on the bid. If you have to ask for it twice, treat that as information.
Look it up at cslb.ca.gov
The Check A License tool takes the number directly. This is the step almost nobody does, and it takes about two minutes.
Confirm the status says active
Licenses lapse, expire, and get suspended. A real number attached to an inactive license offers you nothing.
Check the classification and the disclosures
Confirm C-39 appears, then read the bond status, workers' compensation status, and any complaint disclosure shown on the same record.
The Insurance
Who pays when something goes wrong
Insurance is easier to understand as a question of who writes the check. Two policies do most of the work, and they cover completely different events.
A tool slips and goes through your skylight
General liabilityIf they carry it: The contractor's policy pays to repair the damage their crew caused to your property.
If they do not: You are negotiating with the contractor directly for repairs, and your only leverage is whatever the contract gives you.
A worker falls while on your roof
Workers' compensationIf they carry it: The policy handles the injured worker's medical costs, and the claim stays with the contractor's insurer.
If they do not: Depending on your state and your own homeowner's policy, exposure for an injury that happened on your property can end up pointed at you.
Debris from the tear-off damages a neighbor's car
General liabilityIf they carry it: Third-party property damage arising from the work is what this policy exists for.
If they do not: The claim has nowhere obvious to land, and an uninsured contractor may simply not have the assets to make it right.
Verification
How to check the insurance
- Ask for a certificate of insurance, not a verbal assurance. A legitimate company produces one without friction.
- Check that the coverage dates are current, not a certificate from a policy period that has already ended.
- Confirm workers' compensation covers everyone who will be on site, including any subcontracted crews.
- Cross-check against the CSLB license record, which also shows bond and workers' compensation status.
Downstream Effects
What licensing quietly affects later
Permits and inspection
Roof replacements in the city of Los Angeles are permitted through LADBS, and a licensed contractor is set up to pull one as a matter of routine. The permit brings an inspection, which is the only genuinely independent check on the work anyone will perform. It also leaves a paper trail, and the absence of that trail tends to surface years later during the due diligence on a home sale.
Warranty validity
Manufacturer warranties frequently condition coverage on installation by a certified or licensed installer, which means an unlicensed install can quietly void the coverage you thought you were buying. The contractor's own workmanship warranty has a different weakness: it is worth exactly as much as the business behind it still being reachable in five years. California requires written warranty information covering both the labor and the materials to appear in the contract.
Our Standard
Why these are the first two checks we run
Everything above is work a homeowner can do, and we think you should know how to do it. We also run these same checks before a roofer joins our network, and we run them again on a schedule rather than filing them away after signup, because a license that was active last year tells you nothing about today. It is the difference between describing a contractor as vetted and simply repeating back what they told us about themselves.
FAQ
Frequently asked questions
How do I check a roofer's license in California?
Use the Check A License tool on the CSLB website at cslb.ca.gov and enter the license number, which by law should already appear on the contractor's bid. The record shows whether the license is currently active, what classifications it carries, the bond status, workers' compensation status, and any complaint disclosure. Seeing a number on a business card is not the same as that license being valid today.
What is a C-39 license?
C-39 is California's specialty classification for roofing contractors. It matters because a contractor can hold a valid license in a different classification and still not be licensed to reroof your home. When you look up the license, confirm the classification and not just the status.
What is the difference between general liability and workers' compensation?
General liability covers damage the contractor's work causes to property, whether that is your home or a neighbor's. Workers' compensation covers medical costs when someone working on the job is injured. They protect against completely different events, which is why a contractor carrying only one of them still leaves a gap.
Can I hire an unlicensed roofer if the price is better?
You can, and some unlicensed workers do competent work. What you give up is recourse. Without a license there is no state licensing board to file with, no surety bond behind the work, and usually no insurance backing a claim. On a purchase the size of a roof, that tradeoff is worth thinking through carefully rather than deciding on price alone.
Sources
References
A quick note on how we work
- This article is general information, not legal or insurance advice. Requirements can change and vary by locality, so verify current rules with CSLB or your own insurer.
- We are not the roofing contractor.
- We do not perform roofing services ourselves.
- We help match homeowners with independent roofing contractors.
Skip the verification legwork
Submit a request and share the details of your roof. We'll work to connect you with an independent roofing contractor in Los Angeles whose license and insurance we have already checked.