Introduction to the C12 License The Class C12 Earthwork and Paving Contractors License is a specialized credential that authorizes holders to execute a variety of large-scale projects related to earth moving and surface paving. This license is essential for contractors who wish to engage in road construction, land development, and other infrastructure projects that involve […]
California C-10 Electrical Contractor License Guide Last updated: August 28th, 2026 The California C-10 Electrical Contractor License is a specialty classification issued by the Contractors State License Board (CSLB) for contractors performing electrical work within the scope of the C-10 classification. A C-10 license allows contractors to legally contract for qualifying electrical projects when a […]
California C-9 Drywall Contractor License Guide 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 […]
California C-47 License Requirements for Manufactured Housing Contractors Last updated: August 31st, 2026 California’s C-47 General Manufactured Housing Contractor license has a specific scope, and it is important not to confuse that scope with the authority of a B-General, B-2 Residential Remodeling, or specialty contractor. A B-General contractor does not automatically need to obtain a […]
California C-8 Concrete Contractor License Guide 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 […]
California C-7 Low Voltage Systems Contractor License Guide Last updated: August 28th, 2026 The California C-7 Low Voltage Systems Contractor license is a specialty classification for contractors who install, service, and maintain qualifying communication and low-voltage systems. Under CSLB’s official definition, C-7 systems must be energy limited and cannot exceed 91 volts. The classification includes […]
Introduction to the C6 License The Class C6 license, designated for Cabinet, Millwork, and Finish Carpentry Contractors, represents a specialized segment of the construction industry focused on the intricate details that transform spaces into functional and aesthetic environments. This license certifies professionals to undertake projects involving the crafting, installation, and finishing of cabinets, intricate millworks, […]
Introduction to Class C5 Licensing The Class C5 license, designated for Framing and Rough Carpentry Contractors, is a cornerstone certification in the construction industry. It validates a professional’s ability to construct the skeletal framework of buildings, a foundational element upon which all other construction elements rely. This license serves as a testament to the holder’s […]
California C-4 Boiler Contractor License Guide Last updated: August 28th, 2026 A California C-4 Boiler, Hot Water Heating and Steam Fitting Contractor license allows contractors to install, service, and repair specialized boiler, hot-water heating, and steam-fitting systems within the scope established by the Contractors State License Board (CSLB). For contractors working with boilers, hydronic heating, […]
California C-2 Insulation and Acoustical Contractor License Guide Last updated: August 28th, 2026 A California C-2 Insulation and Acoustical Contractor license allows contractors to perform specialized insulation and acoustical work within the scope established by the Contractors State License Board (CSLB). In California, a contractor license is generally required when a project costs $1,000 or […]
