License scope library
California contractor classifications
Choose a detailed, sourced guide to understand scope, qualifying steps, exam requirements, common mistakes, and practical project examples.
General Engineering (A) License
Infrastructure, utilities, grading, and specialized engineering projects
Read guide CLASS BGeneral Building (B) License
Residential and commercial structures involving two or more unrelated trades
Read guide CLASS B-2Residential Remodeling (B-2) License
Existing residential remodeling and improvement work within the statutory scope
Read guide CLASS C-10Electrical (C-10) License
Wiring, fixtures, controls, and electrical system work
Read guide CLASS C-36Plumbing (C-36) License
Water, waste, gas piping, and plumbing fixtures
Read guide CLASS C-20Warm-Air Heating, Ventilating and Air-Conditioning (C-20) License
Heating, cooling, ventilation, and related duct systems
Read guide CLASS C-27Landscaping (C-27) License
Irrigation, planting, hardscape, and landscape systems
Read guide CLASS C-33Painting and Decorating (C-33) License
Interior and exterior coatings and decorative finishes
Read guide CLASS C-8Concrete (C-8) License
Foundations, slabs, flatwork, and concrete structures
Read guide CLASS C-39Roofing (C-39) License
Roof coverings, waterproofing, repair, and replacement
Read guideBuild the complete licensing picture
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