California Contractor License Classifications (CSLB Guide)

This page explains the different California contractor license classifications issued by the CSLB, including Class A, Class B and C-classification licenses. Understanding which license type you need is a critical first step before applying, preparing for the exam, or enrolling in a contractor license course.

46 CSLB classifications 29 C-61 (D) categories Bilingual guidance

Who Needs a Contractor License in California?

In California, you need a contractor license from the Contractors State License Board (CSLB) to construct or alter any building, road, parking facility, excavation or other structure when the project requires a building permit, uses any employees, or the total cost of labor and materials is $1,000 or more. A larger job cannot be split into smaller contracts to stay under the limit.

If you plan to advertise, bid or perform construction work legally in California, you need the correct CSLB classification before starting any job. Contracting without a license can lead to misdemeanor charges, fines and administrative penalties.

CSLB Contractor License Requirements

To qualify for a California contractor license, the qualifying individual must:

Be at least 18 years old
Have at least four years of full-time, journey-level experience in the classification within the last ten years
Have a valid Social Security Number or ITIN
Pass the CSLB Law & Business exam and, for most classifications, a trade exam

Meeting these requirements is the first step toward a Class A, Class B or C-classification license. CSLP courses prepare you for both exams.

CSLB license classification document used in CSLP contractor license exam preparation

List of California Contractor License Classifications

Choose a classification to see what it covers, the experience and exams you need, CSLB fees and how CSLP can help you prepare.

General licenses: A, B and B-2

AGeneral Engineering Contractor BGeneral Building Contractor B-2Residential Remodeling Contractor

Specialty (C) licenses

C-2Insulation and Acoustical Contractor C-4Boiler, Hot Water Heating and Steam Fitting Contractor C-5Framing and Rough Carpentry Contractor C-6Cabinet, Millwork and Finish Carpentry Contractor C-7Low Voltage Systems Contractor C-8Concrete Contractor C-9Drywall Contractor C-10Electrical Contractor C-11Elevator Contractor C-12Earthwork and Paving Contractors C-13Fencing Contractor C-15Flooring and Floor Covering Contractors C-16Fire Protection Contractor C-17Glazing Contractor C-20Warm-Air Heating, Ventilating and Air-Conditioning Contractor C-21Building Moving/Demolition Contractor C-22Asbestos Abatement Contractor C-23Ornamental Metal Contractor C-27Landscaping Contractor C-28Lock and Security Equipment Contractor C-29Masonry Contractor C-31Construction Zone Traffic Control Contractor C-32Parking and Highway Improvement Contractor C-33Painting and Decorating Contractor C-34Pipeline Contractor C-35Lathing and Plastering Contractor C-36Plumbing Contractor C-38Refrigeration Contractor C-39Roofing Contractor C-42Sanitation System Contractor C-43Sheet Metal Contractor C-45Sign Contractor C-46Solar Contractor C-47General Manufactured Housing Contractor C-49Tree and Palm Contractor C-50Reinforcing Steel Contractor C-51Structural Steel Contractor C-53Swimming Pool Contractor C-54Ceramic and Mosaic Tile Contractor C-55Water Conditioning Contractor C-57Well Drilling Contractor C-60Welding Contractor

C-61 Limited Specialty (D) categories

These categories are licensed under the C-61 Limited Specialty classification. C-61 applicants take the Law & Business exam only.

D-3Awnings D-4Central Vacuum Systems D-6Concrete Related Services D-9Drilling, Blasting and Oil Field Work D-10Elevated Floors D-12Synthetic Products D-16Hardware, Locks and Safes D-21Machinery and Pumps D-24Metal Products D-28Doors, Gates and Activating Devices D-29Paperhanging D-30Pile Driving and Pressure Foundation Jacking D-31Pole Installation and Maintenance D-34Prefabricated Equipment D-35Pool and Spa Maintenance D-38Sand and Water Blasting D-39Scaffolding D-40Service Station Equipment and Maintenance D-41Siding and Decking D-42Non-Electrical Sign Installation D-50Suspended Ceilings D-52Window Coverings D-53Wood Tanks D-56Trenching Only D-59Hydroseed Spraying D-62Air and Water Balancing D-63Construction Clean-up D-64Non-specialized D-65Weatherization and Energy Conservation

Ready to Start Your Contractor License Preparation?

Not sure which license or course option is right for you? Choose one of our flexible preparation packages to get started today, or contact our team for guidance. We’ll help you select the correct CSLB license classification and course package based on your experience, goals and timeline.

Frequently Asked Questions About California Contractor License Types

What are contractor license classifications in California?

Contractor license classifications define the type of construction work a contractor is legally allowed to perform in California. The CSLB issues licenses under Class A (General Engineering), Class B (General Building), B-2 (Residential Remodeling) and C-classification specialty licenses, each with a specific scope of work.

How do I know which contractor license classification I need?

The license you need depends on the type of work you perform most often. If you manage multiple unrelated trades on a project, you may need a Class B license. If you perform a single specialty trade, such as electrical or plumbing, a C-classification license is usually required.

Can I hold more than one CSLB license classification?

Yes. Contractors can hold multiple classifications if they meet the experience requirements and pass the required exams for each license type.

What is the difference between Class A, Class B and C licenses?

Class A licenses are for engineered fixed works like highways, utilities and grading. Class B licenses are for general building work involving multiple unrelated trades. C licenses are specialty licenses focused on a single trade, such as electrical, plumbing, HVAC or roofing.

Do I need a contractor license for small jobs in California?

You need a license if the job requires a building permit, you use employees, or the total cost of labor and materials is $1,000 or more. Breaking a larger job into smaller contracts to stay under $1,000 is not allowed.

Does the CSLB approve contractor license schools?

No. The CSLB does not approve or endorse prep schools. Reputable schools design their courses around the CSLB exam structure and requirements to help applicants prepare effectively.

Can I add a classification after getting licensed?

Yes. Contractors can add classifications by submitting an application and meeting the experience and testing requirements for the new license type.

Is experience required for every CSLB license classification?

Yes. Every classification requires at least four years of journey-level experience in that trade within the last ten years. Up to three years can be credited for qualifying education or training.

Where can I get help choosing the right CSLB license classification?

A contractor license school can explain the classifications and guide you toward the correct license path before applying. Contact CSLP today.

Can I enroll online today?

Yes, you’ll get instant access to your course and study materials within minutes of enrolling. Sign Up Now →

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