How to Verify a Concrete Contractor's CSLB C-8 License in California

Every contractor we match you with holds a CSLB C-8 license — but you should never take that, or any claim of "licensed and insured," on faith from anyone, including us. California makes verification free and public, and this page walks through it. It also covers the rules that make the license number such a useful screen: contractors are required to display it, deposits are capped, and unlicensed work is only legal in a narrow band that real concrete jobs don't fit.

What a C-8 license actually covers

The Contractors State License Board defines a C-8 Concrete Contractor as one who "forms, pours, places, finishes and installs specified mass, pavement, flat and other concrete work; and places and sets screeds for pavements or flatwork." That's every job on this site — driveways, patios and flatwork, stamped and decorative concrete, and repair. The classification excludes businesses whose only work is applying plaster coatings or placing reinforcing steel. A B (General Building) license can also cover concrete when it's part of a larger project involving two or more trades. Note that block walls are a different classification (C-29 Masonry), and fences are C-13 — a "concrete and masonry" contractor may hold both C-8 and C-29, and the record will show it.

Step-by-step: checking a license on cslb.ca.gov

1. Get the license number from the contractor. Ask for the CSLB license number. California law (Business & Professions Code § 7030.5) requires licensed contractors to include it in all advertising and contracts, so it should already be on the estimate, website, truck, or business card. If they can't or won't give it to you, stop here.
2. Open CSLB's Check a License tool. Go to cslb.ca.gov and open "Check a License" (linked directly below the steps on this page). You can search by license number, business name, or personnel name. The database is offline for maintenance Sunday 8 p.m. to Monday 6 a.m.
3. Confirm the business name matches. The name on the record should match the name on the estimate. A number that belongs to a different business, or a "doing business as" name that isn't listed on the record, means the person quoting you may not be the licensee.
4. Check the status is Active. The record shows a status — Active, Expired, Suspended, Inactive, or Revoked. Only Active is acceptable. Note the expiration date; licenses renew every two years.
5. Check the classification includes C-8. The record lists every classification the license holds. Concrete work — driveways, patios, slabs, stamped, repair — requires C-8 Concrete Contractor. A general building (B) license can also cover concrete as part of a larger project, but a contractor holding only an unrelated specialty (say, C-27 landscaping) is not licensed to pour your driveway as a standalone job.
6. Check bond and workers' compensation. The record shows whether a contractor's bond is on file and whether the licensee carries workers' compensation insurance or has filed an exemption. A workers' comp exemption means they claim no employees — fine for a true one-person operation, a problem if a crew of four shows up.
7. Look at complaint disclosure and personnel. The record lists any disclosable complaints or disciplinary actions and the personnel associated with the license. Scroll down; it's easy to stop at "Active" and miss a citation.
8. Get it in writing. Make sure the license number appears on the written contract, along with the down payment (capped by CSLB rules at $1,000 or 10% of the contract price, whichever is less), a description of the work including slab thickness and base, a start and completion date, and a payment schedule tied to progress.

Direct link: CSLB Check a License.

What you're looking for on the record

• Status: Active

  Anything else — Expired, Inactive, Suspended, Revoked — means don't proceed until it's cleared up.

• Classification: C-8

  Or B for a whole-project general contractor. An unrelated specialty isn't licensed for standalone concrete.

• Bond on file

  The record states whether a contractor's bond is on file. This page doesn't quote the required amount — confirm the current figure on cslb.ca.gov.

• Workers' comp or exemption

  An exemption is a sworn statement of no employees. A crew on site with an exemption on file is a problem for you if someone gets hurt.

• Complaint disclosure

  Citations and disciplinary actions are listed. One old resolved complaint isn't disqualifying; a pattern is.

• Name and address match

  The record's business name and city should match the estimate. Our roster of Salinas-based C-8 contractors lists the license number beside each name for exactly this reason.

The rules that make this easy

License numbers must be in every ad and contract

Business & Professions Code § 7030.5 requires every licensed contractor to include the license number in "all construction contracts; subcontracts and calls for bid; and all forms of advertising." CSLB's own guidance lists websites, directories, vehicles, yard signs, and business cards. So the number isn't something you have to ask for — its absence is the finding.

Deposits are capped

For home improvement contracts, CSLB rules cap the down payment at $1,000 or 10 percent of the contract price, whichever is less. Progress payments after that must track work actually done. A contractor asking for a third or half up front is asking for something the law doesn't allow.

Unlicensed work is legal only in a narrow band

California's minor-work exemption was raised to $1,000 on January 1, 2025 (AB 2622). It applies only when the whole job — labor and materials — is at or under that figure, and no building permit is required, and the person doing the work has no employees. A patio at $2,800 or more fails the first test; a driveway approach in the right-of-way fails the second; any crew fails the third. Treat it as a rule for a small handyman patch, not for concrete work.

A local example of what "unverifiable" looks like

While researching this area we found a concrete website ranking for Monterey searches that had no CSLB license number anywhere on the site, no owner or company name, no street address, no email, and terms of service disclosing that the project photos were "generated imagery" rather than completed jobs — and a CSLB business-name search returned no match. We're not naming it and we're not saying it's a scam; we're saying that a two-minute check would have told a homeowner everything they needed to know before handing over a deposit. That's the check this page describes.

Beyond the license: what else to ask

• Local references you can drive past. Concrete is visible. Ask for two or three addresses in Salinas, Monterey, Seaside, or Marina.
• Certificate of insurance. Ask for a current general-liability certificate naming you as certificate holder, not just the word "insured."
• Who pulls the permit. If the job needs one (driveway approaches and curb cuts usually do), the contract should say the contractor is responsible.
• The spec, in writing. Slab thickness, base depth, reinforcement, finish, joint spacing, sealer. Vague quotes produce vague slabs.

Ready to compare? See our roster of licensed C-8 contractors based in Salinas, or read what your project should cost in the cost guide before you request quotes.