California C-8 Concrete Contractor License: Scope, Verification, and Workers' Comp

The C-8 classification covers forming, placing, and finishing concrete: flatwork such as driveways, patios, walkways, and slabs, as well as mass concrete like footings and foundations.

It excludes work that belongs to neighboring trades: a concrete contractor doesn't perform sole plastering or set the reinforcing steel as a separate trade, an asphalt driveway is C-12 (earthwork and paving), and pavers fall under C-29 (masonry) or C-27 (landscaping). Match the classification to the surface you're installing.

Any project where labor, materials, and all other items total $1,000 or more must be performed by a CSLB-licensed contractor. The threshold rose from $500 to $1,000 on January 1, 2025 under Assembly Bill 2622 (Business & Professions Code §7048). Below $1,000, a narrow minor-work exemption can apply only if the job is casual, minor, and standalone (not part of a larger project), requires no building permit of any kind, no one is employed on the job, and any advertising discloses that the person is not licensed.

A small concrete repair under $1,000 in labor, materials, and all other items can be unlicensed, with disclosure. A driveway replacement or patio pour is well over the threshold and should go to an Active C-8.

Homeowners often ask whether they need a permit to pour concrete. The license and the permit are separate: the C-8 is the contractor's credential; a permit is the city's approval for the specific work. Many cities require a permit to replace a driveway in the public right-of-way or to pour structural concrete, even though a simple backyard slab sometimes doesn't.

Confirm both: an Active C-8 contractor, and whatever permit your city requires for the specific pour. A licensed contractor pulls the permit in their own name.

C-8 concrete contractors must carry workers' compensation insurance regardless of whether they have employees. It is one of only five classifications, C-8 (concrete), C-20 (HVAC), C-22 (asbestos abatement), C-39 (roofing), and C-61/D-49 (tree service), whose contractors cannot claim the no-employee workers' compensation exemption. Senate Bill 216 phased in this regardless-of-employees requirement for these high-risk trades.

Senate Bill 1455 will extend that requirement to every CSLB licensee, regardless of employees, on January 1, 2028, with CSLB's exemption-verification process due by January 1, 2027. Since January 1, 2026 (SB 291), a licensee caught employing workers without coverage faces minimum penalties of $10,000 per violation for a sole owner and $20,000 for a partnership, corporation, or LLC, and cannot renew without current coverage. For concrete there is no no-employee exemption today: confirm a C-8 contractor's workers'-compensation coverage before hiring. Concrete work is physically hazardous, and if an uninsured worker is hurt on your property, you could be asked to pay through your homeowner's policy or face lawsuits.

Confirm the license is Active and the C-8 classification is listed, either on the CSLB "Check a License" tool or on the contractor's profile in this directory. Match the license to the business you're hiring. Check that the $25,000 contractor bond is on file (Business & Professions Code §7071.6) and that workers' compensation coverage, or a valid exemption, is shown.

Because C-8 carries no workers'-comp exemption, treat a missing coverage record as a reason to pause. Browse Active C-8 concrete contractors by city in the California concrete directory and see each one's dated CSLB status before you hire.