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California uses a single-board model. The Contractors State License Board (CSLB) handles all contractor licensing, certifications, and registrations statewide, covering over 40 specialty classifications alongside general engineering and building licenses.
Always verify statutes, fees, and application details with the live regulator before making bidding, licensing, or legal decisions.

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At a glance

The fastest way to orient yourself in California is to know the threshold, the bond requirement, and the license term.

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Frequently asked questions

Pick the tab that matches your situation. Each FAQ gives a direct answer and points you to the full detail below.
Apply through CSLB with 4 years of experience within the last 10 years as journeyman, foreman, supervising employee, or contractor. You must pass both a business law exam and a trade exam, submit fingerprints for all personnel, and post a $25,000 contractor bond. Application fee is $450. See Requirements.
All active licenses require a $25,000 contractor bond. If the qualifying individual is an RME or an RMO/RMM owning less than 10%, an additional $25,000 qualifying individual bond is required. LLCs face an additional $100,000 surety bond and $1,000,000 minimum liability insurance. See Bonds and Insurance.
Application fee is $450 for all entity types. License fee is $200 (sole owner) or $350 (non-sole owner). Active renewal is $450 (sole) or $700 (non-sole) every 2 years. See Requirements for the complete fee table.
All contractor licensing goes through the Contractors State License Board at 9821 Business Park Drive, Sacramento. Corporations and LLCs must also register with the California Secretary of State before obtaining a CSLB license. See Who regulates construction.
California offers limited reciprocity — a trade exam waiver for applicants from Arizona, Louisiana, Nevada, or North Carolina with 5+ years of current, good-standing licensure. You must still pass the CSLB law and business exam, certify work experience, submit fingerprints, and post the bond. NASCLA B-General Building exam may also qualify. See Reciprocal agreements.
Yes. The $1,000 threshold includes combined labor and materials. You also need a license if you hire employees or pull permits, even on projects under $1,000. See Construction work regulated.
Property owners performing work themselves or contracting with licensed subcontractors may be exempt from licensing under certain conditions. This is the owner-builder exemption. See Construction work regulated.
Roofing requires a C-39 classification. Asbestos abatement over 100 sq ft requires a C-22 classification plus separate certification. Both C-39 and C-22 licensees must carry workers’ compensation insurance regardless of employee status. See Requirements and Types of licenses.
Yes. Residential remodeling at $1,000 or more requires a license. California offers a specific B-2 Residential Remodeling classification (effective 1/1/2021) in addition to the general B classification. See Types of licenses.
Workers’ comp is required if you hire employees. Five specialty classifications — C-8 (Concrete), C-20 (HVAC), C-22 (Asbestos), C-39 (Roofing), and C-61/D-49 (Tree Service) — must carry workers’ comp regardless of whether they have employees. See Requirements.
Two or more licensees may submit a bid as a joint venture before obtaining the joint venture license, but cannot begin work until the joint venture license is issued. Apply for the additional license before contract award. See Common determination scenarios.

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Start with your goal

Pick the card that matches what you need right now. Each one links to the relevant section on this page.

Is licensure triggered?

Start with the $1,000 threshold and the two additional triggers, then confirm which classification applies.

Find the right regulator

Use the regulator directory to route your question to CSLB or the Secretary of State.

Application and renewal details

Exams, fees, bonds, insurance, fingerprints, and renewal cycles for all CSLB licenses.

Reciprocity direction

Find out which states qualify for a trade exam waiver and what NASCLA coverage means.

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Special considerations

Different roles need different things from a California page. Use the tab that matches your situation to see what matters most before you read the full detail below.
Start with project cost, employee status, and permit requirements. Any one of these can trigger California licensure.
  • The licensure threshold is $1,000 in combined labor and materials — one of the lowest in the country.
  • You also need a license if you hire employees or pull permits, even on projects under $1,000.
  • A $25,000 contractor bond is required on all active licenses.
  • LLCs face an additional $100,000 surety bond plus $1,000,000 minimum liability insurance.
  • Five specialty classifications (C-8, C-20, C-22, C-39, C-61/D-49) must carry workers’ comp even without employees.
  • Asbestos abatement over 100 sq ft requires a separate C-22 certification on top of your license.

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Readiness checklist

Four things you need to confirm before you can treat California as “ready” for a bid or an application. If any of these are unclear, you are not ready yet.

Check all three triggers

Licensure is triggered by any of: combined cost of $1,000 or more, hiring employees, or pulling permits.

Identify the right classification

Determine whether you need an A (engineering), B (building), B-2 (residential remodel), or C (specialty) classification.

Confirm bond and insurance requirements

All active licenses require a $25,000 contractor bond. LLCs need an additional $100,000 surety bond and $1,000,000 liability insurance.

Confirm the requirement set

Confirm exams, experience, fees, fingerprints, entity registration, and reciprocity eligibility before filing.
If you can confirm trigger, classification, bond requirements, and application inputs, you have the minimum package needed for a California readiness check.
Use these links to jump to related cross-state comparisons and workflows.

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Construction work regulated

California triggers licensure more broadly than most states. The answer depends on project cost, employment status, and permit requirements — any one of these is sufficient.
Property owners performing work themselves or contracting with licensed subcontractors or general building contractors may be exempt from licensing under certain conditions.

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Common determination scenarios

If you are trying to figure out where to start, expand the scenario that is closest to your situation.
Confirm the project triggers licensure (cost, employees, or permits), then determine whether you need an A (engineering / infrastructure) or B (building construction) classification. All applications go through CSLB.
Identify which of the 40+ C-specialty classifications covers your scope. If the work does not fit an existing classification, apply for C-61 Limited Specialty. CSLB will reassign to a recognized classification if one exists.
Asbestos work over 100 sq ft requires a C-22 license plus separate certification. Hazardous substance removal and underground storage tank work each require their own certifications. These are in addition to any general or specialty license.
Two or more licensees may submit a bid as a joint venture before obtaining the joint venture license, but cannot begin work until the joint venture license is issued. Apply for the additional license before contract award.
Reciprocity is limited to a trade exam waiver for applicants from Arizona, Louisiana, Nevada, or North Carolina with 5+ years of current, good-standing licensure. You must still pass the CSLB law and business exam and certify work experience. NASCLA B-General Building exam may also qualify.

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Who regulates construction

California routes all contractor licensing through a single board. Corporations and LLCs must also register with the Secretary of State before applying for a CSLB license.

All contractor licensing — Contractors State License Board (CSLB)

9821 Business Park Drive, Sacramento, CA 95827Mailing: PO Box 26000, Sacramento, CA 95826Phone: (800) 321-2752 (automated response system)Website: cslb.ca.gov
1500 11th Street, Sacramento, CA 95814Phone: (916) 657-5448 (automated)Website: sos.ca.gov/businessCorporations and LLCs must register here before obtaining a CSLB license.

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Requirements

All CSLB licenses follow the same application process: business law exam, trade exam, experience documentation, bond, and fingerprints. Expand the section below for the full requirement set and fee tables.

All Contractors (CSLB)

Active C-8 (Concrete), C-20 (HVAC), C-22 (Asbestos), C-39 (Roofing), and C-61/D-49 (Tree Service) licensees must carry workers’ compensation insurance regardless of whether they have employees. These classifications cannot file a workers’ comp exemption.

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Reciprocal agreements

California offers limited reciprocity — a trade exam waiver only, not full license recognition. Applicants must still pass the CSLB law and business exam and document relevant work experience.
Reciprocity in California means you may skip the trade exam. You cannot skip the law and business exam, experience certification, bond, or fingerprinting.
  • Out-of-state license must be current, in good standing, and held for at least 5 years.
  • The benefit is limited to a waiver of the trade exam for a similar classification.
  • Applicants must still pass the CSLB law and business exam.
  • Relevant work experience must be certified.
  • California may waive the B-General Building trade exam for applicants who have passed the NASCLA Commercial Builders exam, been licensed 5+ years in their own state, and hold a current license in good standing.

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Types of licenses

California offers three tiers of credential: general classifications for broad project types, specialty classifications for specific trades, and certifications and registrations for regulated activities.

General Classifications

  • A — General Engineering
  • B — General Building
  • B-2 — Residential Remodeling (effective 1/1/2021)
  • C-2 — Insulation and Acoustical
  • C-4 — Boiler, Hot-Water Heating, and Steam Fitting
  • C-5 — Framing and Rough Carpentry
  • C-6 — Cabinet, Millwork, and Finish Carpentry
  • C-7 — Low Voltage Systems
  • C-8 — Concrete
  • C-9 — Drywall
  • C-10 — Electrical
  • C-11 — Elevator
  • C-12 — Earthwork and Paving
  • C-13 — Fencing
  • C-15 — Flooring and Floor Covering
  • C-16 — Fire Protection
  • C-17 — Glazing
  • C-20 — Warm-Air Heating, Ventilating, and Air-Conditioning
  • C-21 — Building Moving / Demolition
  • C-22 — Asbestos Abatement
  • C-23 — Ornamental Metal
  • C-27 — Landscaping
  • C-28 — Lock and Security Equipment
  • C-29 — Masonry
  • C-31 — Construction Zone Traffic Control
  • C-32 — Parking and Highway Improvement
  • C-33 — Painting and Decorating
  • C-34 — Pipeline
  • C-35 — Lathing and Plastering
  • C-36 — Plumbing
  • C-38 — Refrigeration
  • C-39 — Roofing
  • C-42 — Sanitation System
  • C-43 — Sheet Metal
  • C-45 — Sign
  • C-46 — Solar
  • C-47 — General Manufactured Housing
  • C-49 — Tree and Palm Contractor (as of 1/1/2024)
  • C-50 — Reinforcing Steel
  • C-51 — Structural Steel
  • C-53 — Swimming Pool
  • C-54 — Ceramic and Mosaic Tile
  • C-55 — Water Conditioning
  • C-57 — Well Drilling
  • C-60 — Welding
  • C-61 — Limited Specialty
Certifications:
  • Asbestos Certification
  • Hazardous Substance Removal Certification
Registrations:
  • Home Improvement Salesperson (HIS)

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See also

West region guide

Browse all West jurisdictions for comparison.

Contractors guide

Cross-state guidance for contractors evaluating new jurisdictions.

Regulators guide

Cross-state guidance for comparing regulatory models and agency structures.
Neighboring jurisdictions with reciprocity ties:

Arizona

Limited trade exam waiver reciprocity with California CSLB.

Nevada

Limited trade exam waiver reciprocity with California CSLB.

Louisiana

Limited trade exam waiver reciprocity with California CSLB.