Last updated: August 28th, 2026
The California C-9 Drywall Contractor License is a specialty classification issued by the Contractors State License Board (CSLB) for contractors who perform qualifying drywall work.
A C-9 license allows contractors to legally contract for drywall projects that fall within the classification when a California contractor license is required.
CSLB defines a C-9 Drywall Contractor as a contractor who:
That is the official scope of the C-9 classification.
C-9 work can include standard and specialty wallboard assemblies, drywall finishing, repairs, nonstructural metal framing, and other drywall work that fits within this defined scope.
A C-9 license allows you to independently contract for qualifying drywall work when licensing is required.
It can also provide opportunities to work on residential, commercial, remodeling, and new-construction projects that require a properly licensed drywall contractor.
To qualify for the C-9 contractor examination, the qualifying individual generally needs at least four years of qualifying experience in the classification within the previous 10 years.
Qualifying experience may be earned at the journey level or as a:
CSLB requires qualifying experience to demonstrate that the applicant has the knowledge and skills needed to perform or supervise the trade.
Your experience must be properly documented and certified by a qualified person with firsthand knowledge of the work performed.
Formal education is not required to obtain a C-9 license.
However, qualifying education or technical training may provide credit toward part of the four-year experience requirement, depending on the education submitted and CSLB’s evaluation.
At least one year must be practical experience.
Applicants who need to take the examinations generally begin with the Application for Original Contractor License.
The licensing process typically includes:
CSLB currently uses PSI to administer contractor licensing examinations.
For examinations scheduled on or after December 1, 2025, CSLB divides the C-9 Drywall examination into five major sections:
The percentages are approximate.
Topics include:
Topics include:
Topics include:
Topics include:
Topics include:
The C-9 trade examination is closed book and multiple choice.
For additional preparation, review our California C-9 Drywall Exam Prep Course.
A strong study plan should focus on the subject areas identified in CSLB’s current C-9 examination study guide.
Helpful preparation strategies include:
Passing the required examinations is an important step, but CSLB must still receive the applicable final requirements before issuing an active license.
These may include:
California contractors must maintain a $25,000 contractor license bond.
The contractor license bond is a licensing requirement and should not be confused with a project-specific performance bond or completion guarantee.
C-9 contractors with employees generally must maintain workers’ compensation insurance.
A C-9 contractor with no employees may generally qualify for the standard workers’ compensation exemption if the other CSLB requirements are met.
C-9 is not currently one of the classifications that must carry workers’ compensation insurance regardless of employee status.
General liability insurance is not universally required by CSLB for every C-9 contractor license.
Contractors may still choose or be contractually required to carry liability coverage depending on their projects, customers, business structure, and risk exposure.
California contractor LLCs have separate liability-insurance requirements.
Once your C-9 license is active, keep it in good standing by:
Obtaining a California C-9 Drywall Contractor License starts with properly documenting your qualifying experience and understanding the exact scope of the classification.
From there, preparing for the Law & Business and C-9 trade examinations can help you move through the licensing process with fewer unnecessary delays.
For exam preparation, visit our California C-9 Drywall Exam Prep Course.
