Last updated: August 28th, 2026
The California C-8 Concrete Contractor License is a specialty classification issued by the Contractors State License Board (CSLB) for contractors whose work falls within California’s defined concrete-construction scope.
A C-8 license allows contractors to contract for qualifying concrete work when a California contractor license is required.
CSLB defines a C-8 Concrete Contractor as a contractor who:
The C-8 classification does not include contractors whose sole contracting business is applying plaster coatings or placing and erecting reinforcing steel or bars for concrete work.
This means C-8 contractors commonly perform work involving concrete foundations, slabs, pavement, flatwork, driveways, sidewalks, and other concrete installations that fall within the official classification.
A C-8 license allows you to legally contract for concrete work within the classification when licensing is required.
It can also provide opportunities to work on residential, commercial, and larger construction projects that require a properly licensed concrete contractor.
To qualify for a C-8 contractor license, applicants generally need at least four years of qualifying experience within the previous 10 years.
Qualifying experience may include work performed as a:
Your experience should demonstrate that you have the knowledge and skills required to perform or supervise concrete work within the C-8 classification.
The licensing process generally includes:
CSLB currently uses PSI to administer contractor licensing examinations.
For examinations scheduled on or after March 1, 2026, CSLB divides the C-8 Concrete examination into five major sections:
The exam covers topics including:
The C-8 trade examination is closed book and multiple choice.
A strong preparation plan should focus on the areas outlined in CSLB’s current C-8 examination study guide.
Helpful strategies include:
Passing the required examinations is an important step, but additional requirements must be completed before CSLB can issue and maintain an active license.
These can include:
California contractors must maintain a $25,000 contractor license bond.
This bond is a license bond, not a performance bond.
It does not guarantee completion of a specific construction project. The contractor license bond exists to provide financial protection in certain situations involving violations of contractor licensing law.
Do not confuse the $25,000 contractor license bond with a project-specific performance bond, which serves a different purpose. Current CSLB license records also reflect the $25,000 contractor bond requirement.
This is an especially important requirement for the C-8 classification.
All active C-8 Concrete contractors must maintain workers’ compensation insurance or a valid Certification of Self-Insurance, even if they have no employees.
Unlike many other contractor classifications, a C-8 contractor cannot use the standard no-employee workers’ compensation exemption.
CSLB currently applies this mandatory-coverage rule to:
Workers’ compensation coverage must remain continuous. Failure to maintain the required coverage can result in suspension of the contractor license.
General liability insurance is not universally required by CSLB for every C-8 contractor license.
However, contractors may choose to carry liability insurance for business protection, and clients, general contractors, project owners, or contracts may require specific coverage.
California contractor LLCs have separate liability-insurance requirements.
After receiving your C-8 license, keep it in good standing by:
Because C-8 contractors cannot use the standard workers’ compensation exemption, keeping that coverage active is especially important.
Obtaining a California C-8 Concrete Contractor License starts with documenting qualifying experience, completing the correct application, and preparing for the Law & Business and C-8 trade examinations.
Understanding the exact C-8 scope is also important. The classification covers forming, pouring, placing, finishing, and installing specified concrete work, but it does not automatically authorize every type of work that may be associated with a concrete project.
